毕节地区的水土流失及其防治对策

Soil Loss in Bijie Prefecture and Its Countermeasures of Prevention and Control

地处黔西北云贵高原屋脊的毕节地区,石灰岩溶地貌遍布,水土流失严重,每年约有660hm^2坡耕地由于水土流失而石化、砂化,旱、洪、泥石流灾害频繁,生态环境恶化,人民生活困难。在分析水土流失成因和总结治理经验教训的基础上,提出防治水土流失的三条基本思路和“五子登科”的治理方案。

Situated on the roof of Yunnan-Guizhou Plateau, Bijie prefecture is featured by the lime karst geo-morphy spread all over the country where soil and water loss is serious. Every year there are 600hm2 of sloping farmland are stonized and desertified due to soil loss, causing frequent drought, flood, debris flow disasters, worsening the eco - environment, and bringing about difficulties to the people' s life. Based on analyses of the causes of formation of soil loss and summary of the experiences of harnessment, the author puts forward basic thinkings and strategy plan of preventing and controlling soil loss.