青海湖区生态环境恶化原因探析

Some discussions about causes of Qinghai Lake ecological environment deterioration

简述历史因素对青海湖生态环境的影响,简介自然因素导致的青海湖生态环境问题:植被稀疏,气温连续上升,湖水位持续下降,湖水含盐度、矿化度不断增加,湖水碱性程度不断增加,湖底沉积物增多,鸟岛成为半岛致使鸟类大量迁徙,湿地面积逐渐减少,沙尘暴灾害加剧,湖区周边地区沙化面积扩大。指出,人类活动又加速了生态环境的恶化:开荒毁林、植被退化,草场退化、牲畜超载,农田质量下降、土地盐渍化,水质污染,化肥、农药污染,湟鱼资源日渐枯竭,珍稀野生动植物濒临灭绝以及旅游活动的负面影响。

Effect of historical factors on the ecological environment of Qinghai Lake is briefly introduced.The problems aroused by natural factors are as follows: sparse vegetation,continuous increase of temperature,decrease of water level,increase of salinity of water,migration of birds,decrease of wetland,etc. It is put forward that human activities have accelerated the deterioration of ecological environment and some negative aspects have been aroused.