[1]ZHAO Yu-ming,JIANG Hong-tao,WANG Shi-jie.Study on Relative Soil and Water Conservation Benefits in Different Terrain Conditions in Black Soil Area of Northeast China[J].Research of Soil and Water Conservation,2014,21(05):28-34.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
21
Number of periods:
2014 05
Page number:
28-34
Column:
Public date:
2014-10-28
- Title:
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Study on Relative Soil and Water Conservation Benefits in Different Terrain Conditions in Black Soil Area of Northeast China
- Author(s):
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ZHAO Yu-ming1,2, JIANG Hong-tao2,3, WANG Shi-jie1
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1. College of Resource and Environment Science, Pingdingshan University, Pingdingshan, He’nan 467000, China;
2. State Key Laboratory of Surface Process and Resource Ecology, School of Geography, Beijing Normal University, Beijing 100875, China;
3. College of Geographical Science, Inner Mongolia Normal University, Hohhot 010020, China
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- Keywords:
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black soil area in northeast China; ridge tillage; ridge direction; soil erosion; water and soil loss investigation; soil and water conservation benefits
- CLC:
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S157
- DOI:
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- Abstract:
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Ridge tillage, which is a very common and important tillage measure in black soil area of northeast China has some water conservation benefits, but has received little attention. It is very important to explore the spatial distribution of the ridge direction of the arable land and its water conservation benefits in different terrain conditions in black soil area. So Binxian County of Heilongjiang Province was selected as the study area, and 168 field cells were extracted by stratified sampling method and investigated. According to slope gradient factor equations and tillage-induced directional slope gradient equation, and based on the software of ArcMap, SPSS and Excel, the investigation data were analyzed and counted. The results were as follows. The average land slope gradients in plain, hilly and mountain are 1.92°, 6.20°, 8.27°, respectively. The average tillage-induced directional slope gradients in plain, hilly and mountain is 1.33°, 4.52°, 6.45°, respectively, which are 70%, 73%, 78% of the average land slope gradient in the same terrain condition. The relative soil erosion in the present ridge tillage condition is about 55%, 69% and 67% of that in down-slope ridge tillage conditions in plain, hilly and mountain and ridge direction, respectively, so present ridge tillage has obviously relative water conservation benefits. Based on these results, the reasons for the present ridge tillage status were analyzed, and some reform measures were proposed. The result could help to comprehend the spatial distribution and soil and water conservation benefits of ridge tillage in black soil area of northeast China, and it could be used to guide the local soil and water conservation measures too.