我国黑河流域中下游地区植被资源特征研究

Characteristics of the vegetation resource in the middle and lower reaches of Heihe River in China.

阐述了我国黑河流域中下游地区植被资源的种类(35科共95种植物)、分布特征及其成因,指出该区植被退化(如典型植被大片死亡和退化、岛屿化现象)的主要成因为风蚀作用致使根系裸露,生境的改变使根系无法正常向树干传递水分和养分,也无法支撑树干,最终导致植物枯萎和死亡,水资源短缺与风蚀的相互作用亦加剧了其退化。

The plant category, distribution and the causes of its formation in the middle and lower reaches of Heihe River are stated. It is pointed out that the main reasons for the vegetation degeneration, such as large-scale death and degeneration, insularization of plants are wind erosion, the lack of water resource and the interaction of wind and drought.