环青海湖区沙漠化综合治理规划研究

环青海湖区沙漠化土地总面积 16 95 .12km2 ,根据其分布特点分为潜在沙漠化土地、正在发展中的沙漠化土地、强烈发展中的沙漠化土地和严重沙漠化土地 4个等级。研究了沙漠化发展趋势、防沙治沙和生态环境建设的规划 ,针对环青海湖区沙漠化危害特点提出了防治原则和目标、综合防治方案、防治工程和效益分析。

Study on the Planning of the Synthetic Control of Land Desertification in the peripheral Area of the Qinghai Lake

The water level and the water area of the Qinghai Lake were 3 193.8 m and 4 259.0 km2 in 1999. The peripheral area of the Qinghai Lake includes the Qinghai Lake watershed and the eastern part of the Qilian Mountain. The ecological environment in the peripheral area of the Qinghai Lake has degenerated and the area of the desertified lands has been enlarged since 1956. The desertified lands are mainly distributed in the Qinghai Lake watershed, so the key of synthetically controlling land desertification is in the watershed. The total area of the desertified lands is 1 695.123 km2 in the peripheral area of the Qinghai Lake. In this paper, the trend of the land desertification is reached based on the 4 main desertified land types, i.e., the potentially desertified lands, developing desertified lands, violently developing desertified lands and seriously desertified lands. Aiming at the characters of the desertified lands in the peripheral area of the Qinghai Lake, the principles, objects, synthetic control plan, and analysis on the control projects and benefits of land desertification control are carried out, and the planning of sand prevention and control as well as the regeneration of the ecological environment is researched. And some measures and suggestions are put forward for controlling the land desertification in the peripheral area of the Qinghai Lake. It is considered that, after implementing the project of land desertification control, the evaporation from the water surface of Qinghai Lake will be reduced, and the decrease of its water level will be alleviated. Thus, the ecological environment in the peripheral area will be able to be improved, which is advantageous for the conservation of the biodiversity in the Qinhai Lake basin and the eastern part of Qilian Mountain and also for the sustainable development of the regional economy.