| It is necessary to establish a universal feasible and standard method to quantitatively assess the comprehensive benefits of soil and water conservation (SWC) at the small-watershed scale in China. This paper mainly explores the assessment system of the comprehensive benefits. Based on the Method of Benefit Calculation for Comprehensive Control of Soil Erosion (GB/T15774-1995) and the revised draft in 2006, 3 small-watersheds in Xingguo County of Jiangxi Province, i.e. Tangbei, Liaogongkeng and Jiaoxi watersheds were selected, the assessment system which includes 26 indices covering ecological, economic and social benefits were established, and the comprehensive benefits of SWC were quantitatively assessed. The assessment results were consistent well to the real local situations and disclosed well the ecological, economic and social benefits at the small-watershed scale, which suggest our assessment system is scientific, objective and feasible; this assessment system also showed clearly SWC benefit differences in different small-watersheds by comparison, which suggests the synchronous study of the multi small-watersheds is more useful in instructing the further SWC work at different small-watersheds; There were obvious differences in SWC benefits among the three studied small-watersheds, Tangbei small-watershed enjoyed the highest ecological, economic, social and comprehensive benefits and now it should focus on the daily maintaining work, Liaogongkeng small-watershed should intensify the economic benefit by trying to increase the income of local people. Jiaoxi small-watershed, with the lowest ecological and social benefits, should intensify further the comprehensive control activities, but first of all both Liaogongkeng and Jiaoxi small-watersheds need try to increase the fund input for soil and water conservation. |
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