[1]CAI Xudong,ZHOU Yiwen,LIU Yaojun,et al.Evaluation on Comprehensive Ecological Benefit of Different Tillage Measures on Sloping Land in Red Soil Area of South China[J].Research of Soil and Water Conservation,2020,27(05):281-287.
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Evaluation on Comprehensive Ecological Benefit of Different Tillage Measures on Sloping Land in Red Soil Area of South China
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 05
Page number:
281-287
Column:
目次
Public date:
2020-08-20
- Title:
- Evaluation on Comprehensive Ecological Benefit of Different Tillage Measures on Sloping Land in Red Soil Area of South China
- Keywords:
- sloping farmland; cultivation measures; ecological benefits; analytic hierarchy process; entropy weight method
- CLC:
- S157
- DOI:
- -
- Abstract:
- Rational evaluation of comprehensive ecological benefits of different tillage measures on slope-farmlands in southern red soil region is a necessary condition for further evaluation of economic and social benefits, which can provide scientific basis for the optimization of farming methods in this area. Aiming at the problems of one-sided evaluation index and rough evaluation system existed in the evaluation of tillage methods in slope-farmlands area of red soil in South China, we set bare land measure as control(CK), and evaluated the benefits of downslope tillage(DT), hedgerows with downslope tillage(DT+HR), contour ridge tillage(CT)and straw mulch(SM). The evaluation index system was established by analytic hierarchy process-entropy weight method, and three benefit indicators of soil and water conservation(B1), agricultural non-point source pollutant control(B2)and land productivity enhancement benefits(B3), and eight representative evaluation indicators. The results showed that: in southern China where the traditional tillage, ridge down and up, is adapted by local farmers, soil erosion decreases remarkably by SM and nutrients loss can be controlled; different type benefits increase in the order: DT<DT+HR<CT<SM; there is a significant increase in index for comprehensive ecological benefits and land productivity of different tillage measures compared to DT. Among the measures, SM benefit is the highest, the increase in different ecological benefits varies from that in DT, B1, B2 increase by 66.3%～87.7%, and 36.2%～45.4%, respectively. The evaluation results show that SM can effectively improve the ecological benefits of local agricultural land in the southern red soil slope-farmlands area.
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Last Update:
2020-08-25