ABSTRACT
For a 460 km2 serious soil loss area on the upper reach of the Dashahe River, representative of conditions over most of Dabie Mountain, we first discuss the reasons for the soil loss, including topography, rainfall, geology, soil type, forestry, and human activity. Then, we examine the guiding ideology and measures for soil conservation and sustainable development. Based on a scientific plan, nine small watersheds were built, with erosion controlled on 180.7 km2 by afforesting 1646.3 ha, planting economical trees on 1,492 ha, and building 30 terraces covering 35 ha. The total project volume is 1.18 million m3. Erosion modulus decreased from 4000 t km'2 a'1 to 2456 t km'2 a'1, forest cover increased from 30 to 64%, and production increased by a factor of three. Land use composition changed drastically and agriculture improved. There were good ecological, economic, and social benefits. This study promotes this area’s economic sustainable development.
CONDITION
