降雨量对黄河源区植被变化及生态环境的影响研究

Influence of Rainfall on Vegetation Change and Ecological Environment in Source Region of Yellow River

文章研究降雨量对黄河源区植被变化及生态环境的影响。以黄河源区生态系统为研究对象,测定并分析该区域的气温、降雨量、温度、湿度、盐度、植被生长指数、地上生物量和地下生物量。发现增加降雨量可以降低黄河源区土壤的温度和盐度,提高植被物种的多样性指数、丰富度指数和覆盖度;相反,减少降雨量可以增加黄河源区土壤的温度和盐度,同时降低植被物种的多样性指数、丰富度指数和覆盖度,结果表明,降雨量可以通过改变土壤的温度、盐度,影响植被变化和生态环境,对生态系统平衡具有促进作用。

This paper studies the impact of rainfall on vegetation change and ecological environment in the source area of the Yellow River.Taking the ecosystem of the source area of the Yellow River as the research object,the temperature,rainfall,temperature,humidity,salinity,vegetation growth index,aboveground biomass and underground biomass were measured and analyzed.It is found that increasing rainfall can reduce soil temperature and salinity,and improve vegetation species diversity index,richness index and coverage in the source area of the Yellow River.On the contrary,reducing rainfall can increase soil temperature and salinity in the source area of the Yellow River,and reduce the diversity index,richness index and coverage of vegetation species.The results show that rainfall can affect vegetation change and ecological environment by changing soil temperature and salinity,and promote ecosystem balance.