General Plan of Exploitation and Control on Loess Hilly and Gully Areas Taking the Constructive Experience of Quanjiagou in Mizhi County as an Example

Guo Peicai;Lu Xiangping;Yang Kaibao Institute of the Loess Plateau Control of Shannxi Province, Mizhi, Shaanxi 718100

Quanjiagou Mizhi county;;loess hilly and gully areas;;control and exploitation;;general plan.

Quanjiagou comprehensive experimental area was established by the Institute of the Loess Plateau Control ofShannxi in 1979. The remarkable changes in ecology and economy have taken place as the structure of land utiliza-tion and estate has been rationalized. The mean net income increased from 118 yuan in 1979 to 707 yuan in 1992;the control degree raised from 32 percent in 1979 to 71 percent in 1992; soil erosion mudulus has been reducedfrom 16 279t/km~2 before 1979 to 2330 t/km~2 during "The Seventh Five-year Plan". Ecological environment hasbeen improved remarkably; the farmers' living standards have been improved stably; and remarkable benefits forsociety and economy have been achieved. But, some notable problems still exist, such as how to stabilize foragearea. how to renew low beneficial forest land, and how to manage projectical measures of soil and water conserva-tion. So some ways to resolve these problems were presented in this paper, such as laying particular stress on thebenefit of soil and water conservation, strengthening scientifical control, adjusting service mechanism, changingfree input to return or economic service,etc.