陕北榆林风沙区防风固沙林体系结构优化研究

Modified Structure Disposition of Sand-break Forest System in Yulin Sandy Area in Northern Shaanxi Province

以群落为研究对象,在全面调查研究陕北榆林风沙区防风固沙林体系植被建设状况和历年经营情况的基础上,针对该区域复杂的地貌环境和立地条件,筛选提出了各种适合不同立地类型区的林种、树种结构优化配置模式,为低质林分改造和沙地综合治理提供了科学依据。

Communities were regarded as the research objects in this paper. On the basis of the full-scale investigation on sand-break forest development and management, several modified structure modes were selected out in the light of the complex physiognomy and site condition in Yulin sandy area. The results would offer scientific basis for comprehensive administration of sandy area and for the reconstruction and improvement of low quality forests.