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雅砻江流域位于青藏高原与四川盆地的过渡地带,是长江上游重要的水源和水土保持林区,对整个长江流域产业带的国土保安、经济开发有着不可估量的价值. “南水北调”将缓解中国北方部分地区用水矛盾,但从雅砻江调水后,对该少数民族地区的发展,该地区森林生态环境的变化都会有影响,还将影响长江中下游地区.本文从流域的生态环境、社会经济入手,对既定的调水方案将产生的影响进行了定性,定量、定位的研究.Ⅰ、直接影响; (1)对木材漂运量的影响;(2)调节水库淹没和移民对森林与林地资源的损失.Ⅱ、间接影响;(1)加剧干旱、影响森林更新;(2)植被逆向演替、干旱河谷上限上升; (3)局部地区林地退化.并研究了采取补救措施的可能性及具体措施,计算了补救措施的项目投资额度.
The Yalong River Basin is located in the transitional zone between the Qinghai-Tibet Plateau and Sichuan Basin and is an important source of water and soil and water conservation forest in the upper reaches of the Yangtze River. It has an immeasurable value in the land security and economic development of the entire industrial belt along the Yangtze River. Alleviate the contradiction of water use in some areas of northern China, but after the water diversion from the Yalong River, it will affect the development of the ethnic minority areas and the changes of the forest ecological environment in the area, and will also affect the middle and lower reaches of the Yangtze River.Base on the ecological environment , Social and economic start, the impact of the established water diversion program will be qualitative, quantitative and positioning research.Ⅰ, direct impact; (1) the impact on the amount of wood floating; (2) to adjust the reservoir inundation and immigration (1) exacerbating the drought and affecting the forest renewal; (2) the reverse succession of the vegetation and the rising of the upper limit of the arid valley; (3) the degradation of the forestland in some areas; and studying the remedial measures The possibility and the concrete measure, has calculated the project investment quota of the remedial measure.