[1]ZHANG Shouhao,SUN Lei,JAMSHIDI Abdul Hakim,et al.Evaluation of the Degradation Degree of Sloping Cropland in Typical Black Soil Region[J].Research of Soil and Water Conservation,2022,29(02):1-6.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
29
Number of periods:
2022 02
Page number:
1-6
Column:
Public date:
2022-03-20
- Title:
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Evaluation of the Degradation Degree of Sloping Cropland in Typical Black Soil Region
- Author(s):
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ZHANG Shouhao1, SUN Lei1, JAMSHIDI Abdul Hakim1, NIU Yong2, LIU Xia1, FAN Zhaofei3
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(1.Co-Innovation Center for Sustainable Forestry in Southern China/Jiangsu Province Key Laboratory of Soil and Water Conservation and Ecological Restoration, Nanjing Forestry University, Nanjing210037,China; 2.Shandong Provincial Key Laboratory of Soil Erosion and Ecological Restoration/Taishan Forest Ecosystem Research Station, College of Forestry, Shandong Agricultural University, Taian,Shandong271018,China; 3.School of Forestry and Wildlife Sciences, Auburn University,Auburn AL36849,USA)
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- Keywords:
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slope gradient; ridge-slope angle; gully density
- CLC:
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S158.1
- DOI:
-
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- Abstract:
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A comprehensive evaluation indicator system is needed to provide a complete and integrated assessment of the degradation degree of sloping cropland. We employed bibliometrics to perform statistical analysis on research studies involving cropland degradation. Frequency analysis was then used to identify high-frequency indicators to construct a total index set(TIS)for evaluation of the degradation degree of sloping cropland in black soil region. In addition, soil measurement data from sloping cropland in Baiquan County, were used as a basis to construct a minimum index set(MIS). The TIS included the following 11 indexes: A-horizon thickness, clay content, organic matter content, pH value, slope gradient, ridge-slope angle, gully density, bulk density, large water-stable aggregate content, soil cation exchange capacity, and crop yield. The first six of these were included in the MIS. In the studied area, undegraded soil, mildly degraded soil, and moderately degraded soil and above accounted for 12%, 12% and 76% of investigated sloping croplands, respectively. Slope gradient is one of the main factors affecting soil degradation, there is a synergistic relationship between slope gradient and ridge-slope angle. In addition, the application of pesticides, fertilizers and continuous cropping resulted in soil acidification.