三峡库区小气候变化对陆生植物影响的初步研究  

Preliminary study on influence of microclimate change in Three Gorges Reservoir area on terrestrial plants

作　　者：张江北[1] 李德旺[1] 杨寅群[1] 

机构地区：[1]长江水利委员会长江水资源保护科学研究所,湖北武汉430051

出　　处：《人民长江》2013年第11期31-34,共4页Yangtze River

摘　　要：三峡水库的蓄水运用将在一定程度上改变库区的小气候,对区内陆生植物的生长产生一定的影响。在对三峡库区形成后影响气候因子进行识别的基础上,建立了植物生态适应性数学模型,并定量分析了库区小气候变化对库区陆生植物的影响。结果表明:三峡工程蓄水运行后对库区局部气候的影响主要表现在温度和光照两方面;与蓄水前相比,蓄水后库区气温的变化对库区代表性陆生植物生长的影响表现为,10月份有轻微抑制作用,其余各月有促进作用;光照条件变化的影响表现为,5～9月有抑制生长作用,其余各月有促进作用;库区局部气候变化对陆生植物的综合影响表现为,5月和9月有抑制生长作用,其余各月有促进生长作用。研究成果为评价水利工程建设的生态环境影响提供了模型工具,对保护库区生态环境具有重要意义。The impoundment and operation of Three Gorges Reservoir has changed the microclimate in a certain degree and influenced the terrestrial plant growth in the reservoir area. Based on the identification of main climate influential factors in the reservoir area, a mathematical model of plant ecology adaptability is built and the influence of microclimate on terrestrial plant growth in the reservoir area is quantitatively analyzed. The results show that the influences of reservoir on the microclimate are mainly embodied temperature and illumination. After reservoir impoundment, the influence of temperature on the typical terrestrial plants is light inhibition in October and promotion in other months, and influence of illumination is inhibition between May and September and promotion in other months. The comprehensive influence of microclimate change on the terrestrial plants is inhibition in May and September and promotion in other months. The research provides a model tool for evaluating the eco - environ- mental influence of water conservancy projects.

关 键 词：气候变化 生态影响 植物生长模型 三峡库区 

分 类 号：X171[环境科学与工程—环境科学]