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| Evaluation index of the soil and water conservation benefits |
| Yao Wenbo1,Liu Wenzhao2,Zhao Ancheng3,Li Huaiyou3 |
| 1.Center for Historical Environment and Socio-Economic Development in Northwest China and Chinese historical geography research institute,Shaanxi Normal University,710062,Xi'an;2.Institute of soil and water conservation,Chinese Academy of Sciences and Ministry of Water Resources,712100,Yangling,Shaanxi;3.Xifeng Control and Supervision Bureau of Yellow River Water and Soil Conservasion,745000,Qingyang,Gansu: China |
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Abstract Through questionnaire survey and the analysis of relative literature data on soil and water conservation of the Loess Plateau in east Gansu Province,it is found that most of local people are aware of the importance of soil and water conservation measures,but they are not so active in the participation in the work,which thus reduces the effects of comprehensive control.Soil and water conservation obviously succeeds at small scale.However,at large scale the implementation is not as desirable as expected because of the undesirable applications in the non-demonstration zones and non-project areas.The major reason for this is that an insufficient attention is paid to the economic benefits during the implement of soil and water conservation measures.Therefore,an evaluation of comprehensive control of soil and water loss should give first priority to economic efficiency.In order to achieve the better comprehensive control,implementers' enthusiasm and initiative should be mobilized by economic benefits and the efforts for them to get rich should combine closely comprehensive control with ecological and social benefits.Based on the consideration,a system of evaluation indexes is presented for comprehensive control of soil and water loss.
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Received: 04 September 2008
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