干旱区生态环境知识资源中心(Arid): 森林流域蒸散发的控制要素与区域差异探讨

Arid

	森林流域蒸散发的控制要素与区域差异探讨
其他题名	Study on the Controlled Factors of Watershed Evapotranspiration and Its Regional Difference under the Effect of Forest Change
	程根伟; 陈桂蓉
来源期刊	山地学报
ISSN	1008-2786
出版年	2004
卷号	22 期号:2 页码:175-178
中文摘要	森林蒸散发是影响河川径流的重要因素,但是森林影响蒸散发的机理和综合效应评价一直存在很大的分歧.本文从植物的光谱反射特征出发,分析了影响森林流域蒸散发的能量收支特征和水分的蒸发耗散关系,指出流域蒸散发的数值是由蒸发潜力和供水能力这两个因素的最小值决定的,并在此基础上提出了流域蒸散发计算的分布式模型.按照该模型,可以统一解释在湿润地区(南方)、干旱地区(北方)和半湿润地区森林变化前后的蒸散发差异,为森林蒸散发计算中长期存在的分歧提供了统一的理论解释和分析模式.
英文摘要	The evapotranspiration of forest watershed is a key factor impacting the stream flow. But its influence mechanics and evaluation principal are of big disagreement among researchers. Based on the characteristics anal-ysis of plant's reflecting spectrum, the authors studies the energy income-outcome of forest watershed and its ef-fect on the evapotranspiration. The research found that the evapotranspitation of a watershed depends upon the minimum value of potential evaporation and available water of ground surface. A distributed model of watershed evaporation is proposed based on the spatial distribution of these factors. The difference of evapotranspiration caused by reforestation in different climate condition can be explained by this model. This result provides a uni-versal theoretical base and computation approaches to the forest watershed evapotranspiration calculation that has long disagreement.
中文关键词	蒸散发 ; 森林影响 ; 分布式模型
英文关键词	watershed evapotranspiration energy balance distributed model
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Plant Sciences
CSCD记录号	CSCD:1650931
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/378425
作者单位	程根伟, 中国科学院水利部成都山地灾害与环境研究所, 成都, 四川 610041, 中国.; 陈桂蓉, 四川省水文水资源勘测局, 成都, 四川 610015, 中国.
推荐引用方式 GB/T 7714	程根伟,陈桂蓉. 森林流域蒸散发的控制要素与区域差异探讨[J],2004,22(2):175-178.
APA	程根伟,&陈桂蓉.(2004).森林流域蒸散发的控制要素与区域差异探讨.山地学报,22(2),175-178.
MLA	程根伟,et al."森林流域蒸散发的控制要素与区域差异探讨".山地学报 22.2(2004):175-178.