流域治理与生物多样性恢复初步研究

PRIMARY STUDY ON COMPREHENSIVE IMPROVEMENT OF SMALL WATERSHED AND BIODIVERSITY RESTORATION

在鄂尔多斯高原东部的皇甫川流域 ,以小流域为尺度 ,分别选择原生植被 ,退化植被和重建植被 3个样点 ,对其科属组成 ,区系地理成分 ,植物生活型谱和水分生态类群进行了对比分析。贺家湾五分地沟虽已经过 2 0 a的小流域治理 ,但其植被的科属组成 ,区系地理成分和生活型谱与布尔洞沟较为相似而与阿贵庙差异较大 ,文中还对流域治理过程中的物种选择和措施配置与生物多样性恢复等问题进行了初步探讨。

Having chosing three sample sites of original,degraded and reconstructionary vegetation in Huangpuchuan Watershed located in eastern part of Erdos Plateau,the contrasting research have been carryed on at small watershed scale about the species composition,floral elements ,life types and water ecological groups.Results demonstrated that although having controlled the water and soil erosion about 20 years,the species composition,floral elements and life forms of vegetation in Hejiawan is very similar with Buldong,but different with Arguimiao Temple.The problem of the species choosing, measures disposition and the biodiversity restoration were discussed.