小流域防护林对位配置优化模式研究

A STUDY ON OPTIMUM STRUCTURE AND ARRANGEMENT OF STAND AND SPECIES FOR PROTECTION FOREST SYSTEM IN SMALL VALLEY ON LOESS PLATEAU

通过陕西省安塞县阳安沟小流域防护林体系的营建,采用层次分析方法研究探讨了黄土丘陵沟壑区小流域防护林体系对位配置优化模式。结果表明,对位配置优化模式各林种所占比例为:荒坡水土保持林274%、固坡林188%、沟头防护林150%、梁峁顶防护林138%、沟底防冲林126%、梯田地埂林62%、沟边固岸林62%。

The optimum structure of the protection forest system in Small Valley on Loess Plateau Gully Area were analysized by AHP The result indicated that the protection forest in the steep barren slope are 27 4%,18 9% in the very steep barren slope,15 0% in the top of gully,13 8% in the top of barren hill,12 6% in the low-land of gully,6 2% in the edge of terraced fields,6 2% in the edge of gully