Agricultural Soil Health, Erosion and Remediation

A special issue of Agriculture (ISSN 2077-0472). This special issue belongs to the section "Agricultural Soils".

Deadline for manuscript submissions: closed (25 February 2024) | Viewed by 1297

Special Issue Editor


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Guest Editor
Key Laboratory of Mountain Surface Processes and Ecological Regulation, Chinese Academy of Sciences, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences and Ministry of Water Conservancy, Chengdu 610041, China
Interests: soil health; soil erosion; soil conservation

Special Issue Information

Dear Colleagues,

Healthy soils are vital for food production as 95% of global food production depends on our soils either directly or indirectly. With the increase of environmental stresses from both nature and human society, soil health (SH) is being increasingly threatened. However, soil scientists and ecologists have not reached an agreement on the concept of soil health. Different researchers have different definitions of SH depending on their fields, as SH research is a long-term and dynamic process, which also shows its complexity and importance. On the other hand, in many circumstances both SH and soil quality are considered synonymous with each other.

This Special Issue focuses on the connotation or definition, assessment methods, and improvement measures or practices of SH; the difference between SH and soil quality; and the impacts and tendencies of SH change. Research articles will cover a broad range of crop-land, frost-land and grass-land soil. All types of articles, such as original research, opinions, and reviews are welcome.

Prof. Dr. Gangcai Liu
Guest Editor

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Keywords

  • soil health
  • soil functions
  • soil quality
  • soil disease
  • soil degradation
  • soil conservation
  • soil improvement
  • soil biodiversity

Published Papers (1 paper)

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Research

13 pages, 2590 KiB  
Article
Bacteria Affect the Distribution of Soil-Dissolved Organic Matter on the Slope: A Long-Term Experiment in Black Soil Erosion
by Shanshan Cai, Wei Wang, Lei Sun, Yumei Li, Zhiling Sun, Zhongchao Gao, Jiuming Zhang, Yan Li and Dan Wei
Agriculture 2024, 14(3), 352; https://doi.org/10.3390/agriculture14030352 - 22 Feb 2024
Viewed by 719
Abstract
Soil erosion results in dissolved organic matter (DOM) loss and is one of the main paths of soil carbon loss. Bacteria affect the generation and transformation of DOM. However, the effect of bacteria on the composition and slope distribution of DOM has rarely [...] Read more.
Soil erosion results in dissolved organic matter (DOM) loss and is one of the main paths of soil carbon loss. Bacteria affect the generation and transformation of DOM. However, the effect of bacteria on the composition and slope distribution of DOM has rarely been investigated under field conditions. Based on a long-term experiment of three gradients (3°, 5°, 8°) in a black soil erosion area of Northeast China, the content, composition, and source of DOM were studied. The results showed that the DOM of the 3° and 5° slope was enriched midslope, and the DOM of the 8° slope was enriched downslope. Parallel factor (PARAFAC) analysis indicated that the main substances in DOM were fulvic-like acid, humic-like acid, tryptophan-like protein, and soluble microbial metabolites. The upslope and downslope soils of 3° and 5° slopes showed high DOM bioavailability, while the downslope soil of the 8° slope showed high DOM bioavailability. The content of new DOM in downslope soil increased with the gradient. Bacteria played an important role in the synthesis and transformation of DOM and affected its composition and slope distribution. Verrucomicrobiota, Firmicutes, Planctomycetota, and Gemmatimonadota were the main factors affecting soil DOM. The results could be helpful in understanding the loss mechanism of DOM in eroded black soil and provide support for soil carbon sequestration. Full article
(This article belongs to the Special Issue Agricultural Soil Health, Erosion and Remediation)
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