窟野河、秃尾河、孤山川流域主要水土保持树种造林密度的探讨

通过对窟野河、秃尾河、孤山川流域主要乔、灌木水土保持林的随机抽样调查分析,建立了林分保存密度与郁闭度的相关模型,并以此模型为基础,结合当地水保林经营现状,提出该地区刺槐、柠条、沙柳、踏郎和花棒的造林密度(株或丛/hm~2)分别以2571、4000、2400、3000和3000较为合理。这样的造林密度,在该地区既有较好的水土保持效益,又有较高的经济效益。

Study of the Reasonable Afforestation Density of Major Trees Species for Soil Conservation in the Bosin of Kuye,Tuwei and Gushanchuan Rivers

Through the analysis of random sampling of major arbor and bush forest in the basins of Kuye, Tuwei and Gushanchuan river a cornelation model of crop density and degree of canopy was created. On the basis of this model and local situation of forest for soil conservation, the proper afforestation oleasity. (tree/hm2) of locust, Korshinkii, Salix mongolical, Hedysarm mongolicum, Hedysarm scoparium was 2571, 4000, 2400, 3000, 3000 respectively. With such densities, both higher benefit for soil conservation and higher economic benefit may be obtained.