石羊河下游防风固沙体系建设模式

Construction of the Windbreak and Sand Fixation Forestry System at the Edge of Oasis in the Lower Reaches of the Shiyang River

由于对水土资源的长期不合理利用,导致石羊河下游地区脆弱的生态环境不断遭到破坏,由此引起防沙固沙林衰败死亡,沙漠化扩张速度加快,使得该区域成为我国当前荒漠化危害最为严重的区域。通过对石羊河下游民勤县的防风固沙体系建设发展历史、体系现状以及存在问题的研究,针对新的生态环境条件,提出了防风固沙体系建设的免灌模式和灌溉模式。

Because human irrationally utilizes water and soil resources for long time, weak environment condition of the lower reaches of the Shiyang River was damaged, the windbreak and sand fixation forestry degenerated and desertification expanded, which lead the lower reaches of the Shiyang River is the serious desertification area in China. The authors researched the development history of construction, status and problems of the windbreak and sand fixation forestry system,and put forward the principles and new models of construction of the windbreak and sand fixation forestry system according to the environment condition at present.