Health Assessment of a Small Watershed on the Loess Plateau
نویسنده
چکیده
A health ecosystem is the aim of building a nice Loess Plateau with green mountain and clear river. This paper, taking Zhifanggou small watershed as an example, by using the AHP (Analytic Hierarchy Process) selecting the woodland and pasture cover, area of fundamental cropland, soil anti-scourability, soil organic matter, output/input, crop yield, net incomes of per capita and benefit of reducing the soil erosion etc. analyzed the improvement process in ecosystem rehabilitation. The result showed that after about 20 years of soil conservation practice and restoration, the ecosystem health index of the watershed has improved from 0.178 in 1985 to 0.707 in 1999 experiencing initial restoration, stable improvement and coming to fine development period. This research introduced the new indicators of soil anti-scourability, soil organic matter content and gave the different weight value of indicators in health index calculation in restoration process.
منابع مشابه
Agrifood Research Reports 68, p. 85-94
The Loess Plateau is well known for its deep loess deposits and serious soil erosion. This paper analyses the characteristic of soil erosion on the Plateau and reviews the small watershed management and ecosystem rehabilitation practice and development in the future. In the last 30 years, the government has paid great attention on the integrated small watershed management and restoration of the...
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