[1]MA Qianhong,ZHANG Guanghui,GENG Ren,et al.Evaluation on Soil Quality of Different Land Use Types in Zhifanggou Watershed of the Loess Plateau[J].Research of Soil and Water Conservation,2018,25(04):30-35,42.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
25
Number of periods:
2018 04
Page number:
30-35,42
Column:
Public date:
2018-06-13
- Title:
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Evaluation on Soil Quality of Different Land Use Types in Zhifanggou Watershed of the Loess Plateau
- Author(s):
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MA Qianhong1,2, ZHANG Guanghui1,2, GENG Ren3, WANG Bing4
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1. State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing 100875, China;
2. Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China;
3. Nanjing Hydraulic Research Institute, Nanjing 210029, China;
4. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A & F University, Yangling, Shaanxi 712100, China
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- Keywords:
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soil quality; land use; principal component analysis; key indicators; Zhifanggou Watershed; the Loess Plateau
- CLC:
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F301.24;S158.2
- DOI:
-
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- Abstract:
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In order to have a distinct understanding and proper evaluation of the soil quality under different land use types in small watershed, we collected 26 soil samples from seven different land use types, i. e., forestland, shrub land, grassland, farmland, orchard, nursery and abandoned land in Zhifanggou Watershed, and selected several key indicators from 16 soil physical and chemical indicators to calculate soil quality index (SQI). The results showed that: (1) the selected key indicators were bulk density, clay content, MICMWD, soil organic matter and pH value, except bulk density, the membership values of the other four key indicators differed significantly among land use types; (2) compared with terrain factors, land use type was the more important factor affecting soil quality in Zhifanggou Watershed; (3) as a whole, the soil quality of Zhifanggou Watershed ranked as higher level (0.71±0.10), and soil quality indexes among land use types were significantly different. The average soil quality index decreased in the order: forestland > shrub land > nursery > grassland > orchard > farmland > abandoned land. The results of the study are of great significance for distributing land use types rationally and improving soil quality directionally in small watersheds of the Loess Plateau region.