Assessment of a Multifunctional River Using Fuzzy Comprehensive Evaluation Model in Xiaoqing River, Eastern China
Abstract
:1. Introduction
2. Materials and Methods
2.1. Study Area Data
2.2. Indicator System
2.2.1. Indicator System Framework
2.2.2. Characterization of River Functions
2.3. Evaluation Standards
2.4. Fuzzy Comprehensive Evaluation Model
2.4.1. Constructing the Weight Vector
- 1.
- The Analytic Hierarchy Process (AHP)
- (1)
- Construct the judgment matrices. Each function in the criterion level and the relationships between each indicator in the indicator level are included in the judgement matrix. We used the 1–9 scale approach to rate the relative value of n elements within the same story.
- (2)
- Calculate the weight vector and determine test consistency.
- (3)
- Calculate the combined indicator-to-target weight vector and execute the combined consistency test. The formulas are as follows:
- 2.
- The Entropy Method
- (1)
- Construct the base matrices. A base matrix contains each indicator’s real values at different selection points:
- (2)
- Normalization process. The normalization formulas for positive and negative indicators are different. The formulas are provided below.
- (3)
- Calculate entropy value. The amount of dispersion of an indicator was calculated using the entropy value. When an indicator’s information entropy value is low, it means that the distribution is significant and has a large impact on the evaluation as a whole [55]. The formulas are as follows:
- (4)
- Calculate weights. The weighting formula is as follows:
2.4.2. Calculate the Affiliation Matrix
3. Result
3.1. Comprehensive Weight
3.2. Multifunctional River Evaluation Results
3.2.1. Indicator Layer
3.2.2. Criterion Layer
3.2.3. Target Layer
4. Discussion
4.1. Establishment of Indicator System
4.2. Analysis of Evaluation Results
4.3. Further Research Perspectives of the Current Study
- (1)
- Extend and refine the fundamental theory and notion of river systems and functions;
- (2)
- Create a collection of practical and scientific methodologies for assessing river function;
- (3)
- Establish a fair definition of the requirements for using the evaluation method;
- (4)
- Integrate river development, utilization, and management with the evaluation outcomes.
5. Conclusions
- (1)
- The concept of multifunctional rivers is gaining clarity. Multifunctional rivers’ multiple functions can complement one another and grow in a positive way. In order to accomplish the ultimate aim of sustainable and coordinated development of people and rivers, it is necessary to achieve a sustainable supply of river functions while protecting the stability of the river’s own structure and functions. The creation of multifunctional rivers offers a path towards achieving the coexistence of people and rivers.
- (2)
- Our evaluation of the Xiaoqing River’s functions at the level of individual river segments can provide river management agencies with precise information on the state of various parts of the river, making it easier to create more targeted management plans and ecological restoration initiatives. The multifunctional river assessment indicator system, which was developed on the basis of the river’s four primary functions and twelve secondary functions, can thoroughly assess each function of the Xiaoqing River. The combination of the AHP and the entropy method can balance subjective and objective data. The development status of each function of the Xiaoqing River can be objectively represented by the fuzzy comprehensive evaluation model built using the Cauchy distribution function as the affiliation function.
- (3)
- The overall multifunctionality of the mainstream Xiaoqing River was at a medium level. From upstream to downstream, the river’s multifunctionality decreased, with the upstream part having the maximum multifunctionality. Overall, the ecological function evaluation result was bad, and the Xiaoqing River had the best operational state for environmental function. The evaluation results can guide the Xiaoqing River’s future function enhancement and ecological restoration. The upstream stretch of the Xiaoqing River was in good functional condition and contained less pollution. Therefore, it is suggested that protective measures be taken for the upper reaches of the Xiaoqing River, and that oversight and management be strengthened. Several functions of the middle and lower sections of the Xiaoqing River were impaired, and remediation actions are required to restore the river’s multifunctionality. As the Xiaoqing River renavigation project progresses, the river habitat restoration project should be implemented across the entire Xiaoqing River basin. Xiaoqing River habitat restoration can be accomplished by splitting the river into functional zones. This is should be one of the main Xiaoqing River research goals for the future.
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
- Patil, R.; Wei, Y.; Pullar, D.; Shulmeister, J. Understanding hydro-ecological surprises for riverine ecosystem management. Curr. Opin. Environ. Sustain. 2018, 33, 142–150. [Google Scholar] [CrossRef]
- Wu, Y.; Fang, H.; Huang, L.; Ouyang, W. Changing runoff due to temperature and precipitation variations in the dammed Jinsha River. J. Hydrol. 2020, 582, 124500. [Google Scholar] [CrossRef]
- Yang, X.; Lu, X.; Ran, L.; Tarolli, P. Geomorphometric Assessment of the Impacts of Dam Construction on River Disconnectivity and Flow Regulation in the Yangtze Basin. Sustainability 2019, 11, 3427. [Google Scholar] [CrossRef]
- Gonzalez-Romero, J.; Lucas-Borja, M.E.; Plaza-Alvarez, P.A.; Sagra, J.; Moya, D.; De Las Heras, J. Short-term effects of postfire check-dam construction on ephemeral stream vegetation in a semiarid climate of SE Spain. Sci. Total Environ. 2019, 671, 776–785. [Google Scholar] [CrossRef]
- Luo, Z.; Zuo, Q.; Shao, Q. A new framework for assessing river ecosystem health with consideration of human service demand. Sci. Total Environ. 2018, 640–641, 442–453. [Google Scholar] [CrossRef] [PubMed]
- Ma, D.; Luo, W.; Yang, G.; Lu, J.; Fan, Y. A study on a river health assessment method based on ecological flow. Ecol. Modell. 2019, 401, 144–154. [Google Scholar] [CrossRef]
- Zhang, M.; Bao, Y.; Xu, J.; Han, A.; Liu, X.; Zhang, J.; Tong, Z. Ecological security evaluation and ecological regulation approach of East-Liao River basin based on ecological function area. Ecol. Indic. 2021, 132, 108255. [Google Scholar] [CrossRef]
- Wang, J.; Xiao, W.; Wang, H.; Chai, Z.; Niu, C.; Li, W. Integrated simulation and assessment of water quantity and quality for a river under changing environmental conditions. Chin. Sci. Bull. 2013, 58, 3340–3347. [Google Scholar] [CrossRef]
- Qishlaqi, A.; Kordian, S.; Parsaie, A. Hydrochemical evaluation of river water quality—A case study. Appl. Water Sci. 2016, 7, 2337–2342. [Google Scholar] [CrossRef]
- Di, H.; Liu, X.; Zhang, J.; Tong, Z.; Ji, M. The Spatial Distributions and Variations of Water Environmental Risk in Yinma River Basin, China. Int. J. Environ. Res. Public Health 2018, 15, 521. [Google Scholar] [CrossRef] [Green Version]
- Wang, S.; Zhang, Q.; Yang, T.; Zhang, L.; Li, X.; Chen, J. River health assessment: Proposing a comprehensive model based on physical habitat, chemical condition and biotic structure. Ecol. Indic. 2019, 103, 446–460. [Google Scholar] [CrossRef]
- Heasley, C.; Sanchez, J.J.; Tustin, J.; Young, I. Systematic review of predictive models of microbial water quality at freshwater recreational beaches. PLoS ONE 2021, 16, e0256785. [Google Scholar] [CrossRef] [PubMed]
- Poquet, J.M.; Alba-Tercedor, J.; Puntí, T.; del Mar Sánchez-Montoya, M.; Robles, S.; Álvarez, M.; Zamora-Muñoz, C.; Sáinz-Cantero, C.E.; Vidal-Abarca, M.R.; Suárez, M.L.; et al. The MEDiterranean Prediction And Classification System (MEDPACS): An implementation of the RIVPACS/AUSRIVAS predictive approach for assessing Mediterranean aquatic macroinvertebrate communities. Hydrobiologia 2008, 623, 153–171. [Google Scholar] [CrossRef]
- Smith, M.J.; Kay, W.R.; Edward, D.H.D.; Papas, P.J.; Richardson, K.S.J.; Simpson, J.C.; Pinder, A.M.; Cale, D.J.; Horwitz, P.H.J.; Davis, J.A.; et al. AusRivAS: Using macroinvertebrates to assess ecological condition of rivers in Western Australia. Freshw. Biol. 2001, 41, 14. [Google Scholar] [CrossRef]
- Jacinthe, P.A.; Vidon, P. Hydro-geomorphic controls of greenhouse gas fluxes in riparian buffers of the White River watershed, IN (USA). Geoderma 2017, 301, 30–41. [Google Scholar] [CrossRef]
- Atique, U.; Lim, B.; Yoon, J.; An, K.-G. Biological Health Assessments of Lotic Waters by Biotic Integrity Indices and their Relations to Water Chemistry. Water 2019, 11, 436. [Google Scholar] [CrossRef]
- Ladson, A.R.; White, L.J.; Doolan, J.A.; Finlayson, B.L.; Hart, B.T.; Lake, P.S.; Tilleard, J.W. Development and testing of an Index of Stream Condition for waterway management in Australia. Freshw. Biol. 2001, 41, 16. [Google Scholar] [CrossRef]
- Raven, P.J.; Holmes, N.T.H.; Vaughan, I.P.; Dawson, F.H.; Scarlett, P. Benchmarking habitat quality: Observations using River Habitat Survey on near-natural streams and rivers in northern and western Europe. Aquat. Conserv. Mar. Freshw. Ecosyst. 2010, 20, 18. [Google Scholar] [CrossRef]
- Xu, S.; Liu, Y.; Qiang, P. River functional evaluation and regionalization of the Songhua River in Harbin, China. Environ. Earth Sci. 2013, 71, 3571–3580. [Google Scholar] [CrossRef]
- Deng, X.; Xu, Y.; Han, L.; Yu, Z.; Yang, M.; Pan, G. Assessment of river health based on an improved entropy-based fuzzy matter-element model in the Taihu Plain, China. Ecol. Indic. 2015, 57, 85–95. [Google Scholar] [CrossRef]
- Chen, J.; Kong, Y.; Mei, Y. Riverine Health Assessment Using Coordinated Development Degree Model Based on Natural and Social Functions in the Lhasa River, China. Int. J. Environ. Res. Public Health 2022, 19, 7182. [Google Scholar] [CrossRef]
- Li, Q.; Zhang, Y.; Lu, Y.; Wang, P.; Suriyanarayanan, S.; Meng, J.; Zhou, Y.; Liang, R.; Khan, K. Risk ranking of environmental contaminants in Xiaoqing River, a heavily polluted river along urbanizing Bohai Rim. Chemosphere 2018, 204, 28–35. [Google Scholar] [CrossRef]
- Wu, Z.; Dong, Y.; Liu, R.; Liu, L.; Gao, J.; Song, W.; Zhang, S.; Qiu, J. Assessment of heavy metal contamination in surface sediments off the Dongying coast, Bohai Sea. Mar. Pollut. Bull. 2022, 180, 113826. [Google Scholar] [CrossRef]
- Liu, Y.; Cheng, Y.; Zhang, X.; Li, X.; Cao, S. Combined Exceedance Probability Assessment of Water Quality Indicators Based on Multivariate Joint Probability Distribution in Urban Rivers. Water 2018, 10, 971. [Google Scholar] [CrossRef]
- Wang, X.; Ren, L.; Jiao, F.; Liu, W. The ecological risk assessment and suggestions on heavy metals in river sediments of Jinan. Water Sci. Technol. 2017, 76, 2177–2187. [Google Scholar] [CrossRef]
- Yang, T.; Liu, J.; Chen, Q. Assessment of plain river ecosystem function based on improved gray system model and analytic hierarchy process for the Fuyang River, Haihe River Basin, China. Ecol. Modell. 2013, 268, 37–47. [Google Scholar] [CrossRef]
- Shan, C.; Dong, Z.; Lu, D.; Xu, C.; Wang, H.; Ling, Z.; Liu, Q. Study on river health assessment based on a fuzzy matter-element extension model. Ecol. Indic. 2021, 127, 107742. [Google Scholar] [CrossRef]
- Zhou, Z.; Cartwright, I. Using geochemistry to identify and quantify the sources, distribution, and fluxes of baseflow to an intermittent river impacted by climate change: The upper Wimmera River, southeast Australia. Sci. Total Environ. 2021, 801, 149725. [Google Scholar] [CrossRef]
- Growns, I. The implementation of an environmental flow regime results in ecological recovery of regulated rivers. Restor. Ecol. 2016, 24, 406–414. [Google Scholar] [CrossRef]
- Gimeno, P.; Marce, R.; Bosch, L.; Comas, J.; Corominas, L. Incorporating model uncertainty into the evaluation of interventions to reduce microcontaminant loads in rivers. Water Res. 2017, 124, 415–424. [Google Scholar] [CrossRef]
- Meng, W.; Zhang, N.; Zhang, Y.; Zheng, B. Integrated assessment of river health based on water quality, aquatic life and physical habitat. J. Environ. Sci. 2009, 21, 1017–1027. [Google Scholar] [CrossRef]
- Enuneku, A.; Omoruyi, O.; Tongo, I.; Ogbomida, E.; Ogbeide, O.; Ezemonye, L. Evaluating the potential health risks of heavy metal pollution in sediment and selected benthic fauna of Benin River, Southern Nigeria. Appl. Water Sci. 2018, 8, 224. [Google Scholar] [CrossRef]
- Han, T.; Zhang, H.J.; Hu, W.P.; Deng, J.C.; Li, Q.Q.; Zhu, G.E. Research on self-purification capacity of Lake Taihu. Environ. Sci. Pollut. Res. 2015, 22, 8201–8215. [Google Scholar] [CrossRef]
- Gonzalez, S.O.; Almeida, C.A.; Calderon, M.; Mallea, M.A.; Gonzalez, P. Assessment of the water self-purification capacity on a river affected by organic pollution: Application of chemometrics in spatial and temporal variations. Environ. Sci. Pollut. Res. 2014, 21, 10583–10593. [Google Scholar] [CrossRef]
- Stoffers, T.; Buijse, A.D.; Geerling, G.W.; Jans, L.H.; Schoor, M.M.; Poos, J.J.; Verreth, J.A.J.; Nagelkerke, L.A.J. Freshwater fish biodiversity restoration in floodplain rivers requires connectivity and habitat heterogeneity at multiple spatial scales. Sci. Total Environ. 2022, 838, 156509. [Google Scholar] [CrossRef]
- Lin, L.; Wang, F.; Chen, H.; Fang, H.; Zhang, T.; Cao, W. Ecological health assessments of rivers with multiple dams based on the biological integrity of phytoplankton: A case study of North Creek of Jiulong River. Ecol. Indic. 2021, 121, 106998. [Google Scholar] [CrossRef]
- Li, X.; Yang, W.; Sun, T.; Su, L. Framework of multidimensional macrobenthos biodiversity to evaluate ecological restoration in wetlands. Environ. Res. Lett. 2019, 14, 054003. [Google Scholar] [CrossRef]
- Li, D.; Wu, N.; Tang, S.; Su, G.; Li, X.; Zhang, Y.; Wang, G.; Zhang, J.; Liu, H.; Hecker, M.; et al. Factors associated with blooms of cyanobacteria in a large shallow lake, China. Environ. Sci. Eur. 2018, 30, 27. [Google Scholar] [CrossRef]
- Harvey, J.; Gooseff, M. River corridor science: Hydrologic exchange and ecological consequences from bedforms to basins. WRR 2015, 51, 6893–6922. [Google Scholar] [CrossRef]
- Duarte, G.; Segurado, P.; Haidvogl, G.; Pont, D.; Ferreira, M.T.; Branco, P. Damn those damn dams: Fluvial longitudinal connectivity impairment for European diadromous fish throughout the 20th century. Sci. Total Environ. 2021, 761, 143293. [Google Scholar] [CrossRef]
- Chen, H.; Li, W.; Zuo, Q.; Zhang, Y.; Liang, S. Evaluation of aquatic ecological health of sluice-controlled rivers in Huai River Basin (China) using evaluation index system. Environ. Sci. Pollut. Res. Int. 2022, 1–16. [Google Scholar] [CrossRef]
- Dufour, S.; Rinaldi, M.; Piégay, H.; Michalon, A. How do river dynamics and human influences affect the landscape pattern of fluvial corridors? Lessons from the Magra River, Central–Northern Italy. Landsc. Urban Plan. 2015, 134, 107–118. [Google Scholar] [CrossRef]
- Schmiedel, I.; Culmsee, H. The influence of landscape fragmentation, expressed by the ‘Effective Mesh Size Index’, on regional patterns of vascular plant species richness in Lower Saxony, Germany. Landsc. Urban Plan. 2016, 153, 209–220. [Google Scholar] [CrossRef]
- Yang, T.; Wang, S.; Li, X.P.; Wu, T.; Li, L.; Chen, J. River habitat assessment for ecological restoration of Wei River Basin, China. Environ. Sci. Pollut. Res. 2018, 25, 17077–17090. [Google Scholar] [CrossRef]
- Wu, L.; Yao, W.; Ma, X. Using the comprehensive governance degree to calibrate a piecewise sediment delivery ratio algorithm for dynamic sediment predictions: A case study in an ecological restoration watershed of northwest China. J. Hydrol. 2018, 564, 888–899. [Google Scholar] [CrossRef]
- Que, S.; Luo, H.; Wang, L.; Zhou, W.; Yuan, S. Canonical Correlation Study on the Relationship between Shipping Development and Water Environment of the Yangtze River. Sustainability 2020, 12, 3279. [Google Scholar] [CrossRef]
- Nkhonjera, G.K.; Dinka, M.O. Significance of direct and indirect impacts of climate change on groundwater resources in the Olifants River basin: A review. Glob. Planet. Chang. 2017, 158, 72–82. [Google Scholar] [CrossRef]
- Durán Vian, F.; Pons Izquierdo, J.J.; Serrano Martínez, M. River-city recreational interaction: A classification of urban riverfront parks and walks. Urban For. Urban Green. 2021, 59, 127042. [Google Scholar] [CrossRef]
- Park, J.-k.; Ryu, D.; Lee, K. What determines the economic size of a nation in the world: Determinants of a nation’s share in world GDP vs. per capita GDP. Struct. Change Econ. Dynam. 2019, 51, 203–214. [Google Scholar] [CrossRef]
- Zhao, Y.; Wang, P.; Li, Y. Ecological footprint and carrying capacity change analysis on Yan’an water resources. IOP Conf. Ser. Earth Environ. Sci. 2019, 304, 022063. [Google Scholar] [CrossRef]
- Jamali, A.A.; Tabatabaee, R.; Randhir, T.O. Ecotourism and socioeconomic strategies for Khansar River watershed of Iran. Environ. Dev. Sustain. 2021, 23, 17077–17093. [Google Scholar] [CrossRef]
- Pinto, U.; Maheshwari, B. A framework for assessing river health in peri-urban landscapes. Ecohydrol Hydrobiol 2014, 14, 121–131. [Google Scholar] [CrossRef]
- Zadeh, L.A. Fuzzy logic and approximate reasoning. Synthese 1975, 30, 407–428. [Google Scholar] [CrossRef]
- Lai, C.G.; Chen, X.H.; Chen, X.Y.; Wang, Z.L.; Wu, X.S.; Zhao, S.W. A fuzzy comprehensive evaluation model for flood risk based on the combination weight of game theory. Nat. Hazards 2015, 77, 1243–1259. [Google Scholar] [CrossRef]
- Wang, H.; Huang, L.; Hu, J.; Yang, H.; Guo, W. Effect of Urbanization on the River Network Structure in Zhengzhou City, China. Int. J. Environ. Res. Public Health 2022, 19, 2464. [Google Scholar] [CrossRef]
- Tian, F.; Jing, Z.; Zhao, H.; Zhang, E.; Liu, J. A Synthetic Condition Assessment Model for Power Transformers Using the Fuzzy Evidence Fusion Method. Energies 2019, 12, 857. [Google Scholar] [CrossRef]
- Singh, P.K.; Saxena, S. Towards developing a river health index. Ecol. Indic. 2018, 85, 999–1011. [Google Scholar] [CrossRef]
- Xue, C.; Shao, C.; Chen, S. SDGs-Based River Health Assessment for Small- and Medium-Sized Watersheds. Sustainability 2020, 12, 1846. [Google Scholar] [CrossRef]
- Harvolk, S.; Symmank, L.; Sundermeier, A.; Otte, A.; Donath, T.W. Human impact on plant biodiversity in functional floodplains of heavily modified rivers—A comparative study along German Federal Waterways. Ecol. Eng. 2015, 84, 463–475. [Google Scholar] [CrossRef]
- Chen, Q.; Liu, J.; Ho, K.C.; Yang, Z. Development of a relative risk model for evaluating ecological risk of water environment in the Haihe River Basin estuary area. Sci. Total Environ. 2012, 420, 79–89. [Google Scholar] [CrossRef]
- Ren, L.; Song, S.; Zhou, Y. Evaluation of river ecological status in the plain river network area in the context of urbanization: A case study of 21 Rivers’ ecological status in Jiangsu Province, China. Ecol. Indic. 2022, 142, 109172. [Google Scholar] [CrossRef]
Number | Section | Longitude and Latitude | Item |
---|---|---|---|
JN1 | Jinan section | 36.701° N, 117.041° E | Water quality, aquatic organisms, sediment |
JN2 | Jinan section | 36.750° N, 117.108° E | Water quality, sediment |
JN3 | Jinan section | 36.823° N, 117.230° E | Water quality, sediment |
BZ1 | Binzhou section | 37.024° N, 117.493° E | Water quality, aquatic organisms, sediment |
ZB | Zibo section | 36.068° N, 117.911° E | Water quality, aquatic organisms, sediment |
BZ2 | Binzhou section | 37.116° N, 118.166° E | Water quality, aquatic organisms |
DY1 | Dongying section | 37.136° N, 118.420° E | Water quality, aquatic organisms, sediment |
DY2 | Dongying section | 37.189° N, 118.556° E | Water quality |
WF | Weifang section | 37.275° N, 118.925° E | Water quality, aquatic organisms, sediment |
Target Layer | Criterion Layer | Sub-Criterion Layer | Indicator Layer | Data Source |
---|---|---|---|---|
Multifunctional river | Environmental function (A1) | Hydrological function (B1) | The monthly average flow rate of change (C1) | Hydrological station monitoring data |
The degree of ecological flow satisfaction (C2) | ||||
Water quality purification function (B2) | The rate of drinking water source water quality standards (C3) | Water Resources Bulletin | ||
Surface water quality (C4) | Sampling data | |||
Substrate contamination index (C5) | ||||
Self-repairing/regulating function (B3) | Self-purification capacity of water bodies (C6) | |||
Ecological function (A2) | Biological habitat function (B4) | Phytoplankton diversity index (C7) | ||
Zooplankton diversity index (C8) | ||||
Benthic macroinvertebrate diversity index (C9) | ||||
River corridor function(B5) | River vertical connection index (C10) | Remote sensing | ||
Landscape fragmentation (C11) | ||||
Soil and water conservation function (B6) | Suspended sand transportation modules (C12) | Hydrological station monitoring data | ||
Social function (A3) | Flood control and transportation function (B7) | The attainment rate of flood control engineering measures (C13) | Water conservancy departments | |
The percentage of navigable river sections (C14) | ||||
Water supply function (B8) | Modulus of groundwater resources (C15) | Water Resources Bulletin | ||
The utilization rate of water resource (C16) | ||||
Recreational function (B9) | The degree of human activity demand satisfaction (C17) | Questionnaire | ||
Economic function (A4) | Economic benefit (B10) | The per capita Gross Domestic Product (GDP) (C18) | Statistical Yearbook of Shandong Province | |
The water consumption of 10,000 CNY GDP (C19) | ||||
Aquaculture benefit (B11) | Fish production capacity (C20) | Water conservancy departments | ||
Tourist industry benefit (B12) | Average tourist flow index (C21) | Statistical Yearbook of Shandong Province | ||
The visibility of scenic area (C22) | Questionnaire |
Indicator | Unit of Measure | Indicator Direction | Criteria | ||||
---|---|---|---|---|---|---|---|
Excellent (I) | Good (II) | Moderate (III) | Bad (IV) | Poor (V) | |||
C1 | % | − | [0, 0.2] | (0.2, 0.4] | (0.4, 0.6] | (0.6, 0.8] | >0.8 |
C2 | % | + | [98, 100] | [90, 98) | [80, 90) | [60, 80) | [0, 60) |
C3 | % | + | [90, 100] | [80, 90) | [70, 80) | [60, 70) | [0, 60) |
C4 | - | + | 5 | 4 | 3 | 2 | 1 |
C5 | - | − | [0, 1) | [1, 2) | [2, 3) | [3, 5) | >5 |
C6 | mg/L | + | >7.5 | (5, 7.5] | (3, 5] | (2, 3] | [0, 2] |
C7 | - | + | >3 | (2, 3] | (1, 2] | (0, 1] | 0 |
C8 | - | + | >3 | (2, 3] | (1, 2] | (0, 1] | 0 |
C9 | - | + | >3 | (2, 3] | (1, 2] | (0, 1] | 0 |
C10 | pcs/100 km | − | [0, 0.3) | [0.3, 0.5) | [0.5, 0.8) | [0.8, 1.2) | ≥1.2 |
C11 | % | − | [0, 30] | (30, 60] | (60, 80] | (80, 90] | (90, 100] |
C12 | t/km2 | − | [0, 50] | (50, 100] | (100, 200] | (200, 500] | >500 |
C13 | % | + | [95, 100] | [85, 95) | [70, 85) | [50, 70) | [0, 50) |
C14 | % | + | [90, 100] | [80, 90) | [60, 80) | [30, 60) | [0, 30) |
C15 | million m3/km2 | + | >50 | (30, 50] | (20, 30] | (10, 20] | [0, 10] |
C16 | % | ± | [25, 30] | [20, 25) | [10, 20) | [5, 10) | [0, 5) |
(30, 40] | (40, 50] | (50, 60] | (60, 100] | ||||
C17 | % | + | [90, 100] | [80, 90) | [60, 80) | [30, 60) | [0, 30) |
C18 | million | + | >15 | (15, 12] | (12, 10] | (10, 5] | (5, 0] |
C19 | m3 | − | [0, 15) | [15, 25) | [25, 45) | [45, 80) | >80 |
C20 | - | + | [90, 100] | [80, 90) | [60, 80) | [30, 60) | [0, 30) |
C21 | - | + | >3 | (2, 3] | (1, 2] | (0, 1] | 0 |
C22 | % | + | [90, 100] | [80, 90) | [60, 80) | [30, 60) | [0, 30) |
Criterion Layer | Weight | Criticality | Indicator Layer | Weight | Criticality | ||||
---|---|---|---|---|---|---|---|---|---|
AHP | Entropy Method | Comprehensive | AHP | Entropy Method | Comprehensive | ||||
A1 | 0.2742 | 0.3279 | 0.3010 | 1 | C1 | 0.0619 | 0.0907 | 0.0763 | 1 |
C2 | 0.0838 | 0.0000 | 0.0419 | 14 | |||||
C3 | 0.0220 | 0.0422 | 0.0321 | 19 | |||||
C4 | 0.0417 | 0.0638 | 0.0528 | 5 | |||||
C5 | 0.0324 | 0.0428 | 0.0376 | 16 | |||||
C6 | 0.0324 | 0.0884 | 0.0604 | 3 | |||||
A2 | 0.2938 | 0.2195 | 0.2566 | 2 | C7 | 0.0543 | 0.0317 | 0.0430 | 13 |
C8 | 0.0321 | 0.0382 | 0.0352 | 17 | |||||
C9 | 0.0208 | 0.0365 | 0.0286 | 20 | |||||
C10 | 0.0501 | 0.0505 | 0.0503 | 7 | |||||
C11 | 0.0684 | 0.0301 | 0.0492 | 9 | |||||
C12 | 0.0681 | 0.0325 | 0.0503 | 7 | |||||
A3 | 0.2886 | 0.2031 | 0.2458 | 3 | C13 | 0.1143 | 0.0285 | 0.0714 | 2 |
C14 | 0.0572 | 0.0391 | 0.0481 | 11 | |||||
C15 | 0.0478 | 0.0491 | 0.0485 | 10 | |||||
C16 | 0.0276 | 0.0415 | 0.0346 | 18 | |||||
C17 | 0.0417 | 0.0448 | 0.0433 | 12 | |||||
A4 | 0.1434 | 0.2945 | 0.1964 | 4 | C18 | 0.0402 | 0.0744 | 0.0573 | 4 |
C19 | 0.0489 | 0.0536 | 0.0512 | 6 | |||||
C20 | 0.0148 | 0.0346 | 0.0247 | 21 | |||||
C21 | 0.0247 | 0.0555 | 0.0401 | 15 | |||||
C22 | 0.0148 | 0.0314 | 0.0231 | 22 |
Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. |
© 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Share and Cite
Fu, Y.; Liu, Y.; Xu, S.; Xu, Z. Assessment of a Multifunctional River Using Fuzzy Comprehensive Evaluation Model in Xiaoqing River, Eastern China. Int. J. Environ. Res. Public Health 2022, 19, 12264. https://doi.org/10.3390/ijerph191912264
Fu Y, Liu Y, Xu S, Xu Z. Assessment of a Multifunctional River Using Fuzzy Comprehensive Evaluation Model in Xiaoqing River, Eastern China. International Journal of Environmental Research and Public Health. 2022; 19(19):12264. https://doi.org/10.3390/ijerph191912264
Chicago/Turabian StyleFu, Yongfei, Yuyu Liu, Shiguo Xu, and Zhenghe Xu. 2022. "Assessment of a Multifunctional River Using Fuzzy Comprehensive Evaluation Model in Xiaoqing River, Eastern China" International Journal of Environmental Research and Public Health 19, no. 19: 12264. https://doi.org/10.3390/ijerph191912264