干旱区生态环境知识资源中心(Arid): 基于Budyko假设的流域蒸散发估算及其对气候与下垫面的敏感性分析

Arid

	基于Budyko假设的流域蒸散发估算及其对气候与下垫面的敏感性分析
其他题名	Estimation of evapotranspiration and sensitivity to climate and the underlying surface based on the Budyko Framework
	张丹 1; 梁康 2; 聂茸 3; 顾人颖 4
来源期刊	资源科学
ISSN	1007-7588
出版年	2016
卷号	38 期号:6 页码:1140-1148
中文摘要	蒸散发作为水文循环和能量平衡联系的纽带,对全球和区域水文过程起着重要作用。本文基于Budyko假设,采用全国71个典型流域的水文气象资料,分析了不同水热模型对蒸散发估算精度的影响,并进一步阐释了不同气候和植被类型下蒸散发对降水、潜在蒸散发和下垫面特征的敏感性。结果表明:①水热模型加入反映下垫面特征的参数后,蒸散发的估算精度能得到显著的提高;②蒸散发的敏感性分析结果表明,干旱流域蒸散发对降水最为敏感,其次是下垫面参数和潜在蒸散发;湿润流域蒸散发对下垫面参数最为敏感,其次是潜在蒸散发和降水;③对于不同植被类型的流域而言,森林流域和混合流域蒸散发对降水和下垫面参数变化最为敏感,草地流域蒸散发对降水的变化最为敏感。研究结果对于蒸散发的区域性研究、稀缺资料地区水文预报等有重要的参考意义。
英文摘要	Evapotranspiration is a key processes in water cycles and energy balance. In this study, evapotranspiration was estimated based on water- energy balance theory using hydrological and meteorological data from 71 typical catchments in China from 1960 to 2000. Sensitivities for evapotranspiration to precipitation, potential evapotranspiration and characterizations of the underlying surface (represented by parameter a) are further investigated in catchments classified by four groups: under all conditions without parameter a (group 1), under all conditions with one parameter a (group 2), under different climate zones (group 3) and different predominant land covers (group 4). The results show that a at group 2 is 2.202, and smaller in humid catchments than arid catchments in group 3. a at forest catchments in group 4 are the smallest, followed by grass catchments and mixed catchments. The NSE of evapotranspiration estimation by the original Budyko equation is only 0.64 at group 1, which can be improved effectively by adding parameter a. The NSE of evapotranspiration estimation are 0.80,0.81 and 0.83 in group 2, group 3 and group 4,respectively. In particular, the NSE at forest catchments is 0.88. Evapotranspiration in group 3 is most sensitive to precipitation in arid catchments, followed by a and potential evapotranspiration, while it is most sensitive to a in humid catchments, followed by potential evapotranspiration and precipitation. In group 4, evapotranspiration is most sensitive to a in forest and mixed catchments,while it is most sensitive to precipitation in grass catchments. The results are helpful for water-energy balance modeling, hydrological predictions in ungauged basins and water management decision-making.
中文关键词	Budyko假设 ; 蒸散发 ; 植被 ; 气候 ; 下垫面 ; 敏感性 ; 流域
英文关键词	Budyko framework evapotranspiration vegetation climate underlying surface sensitivity basin
语种	中文
国家	中国
收录类别	CSCD
WOS类目	MULTIDISCIPLINARY SCIENCES
WOS研究方向	Science & Technology - Other Topics
CSCD记录号	CSCD:5729505
来源机构	中国科学院地理科学与资源研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/235570
作者单位	1.河海大学, 水文水资源与水利工程科学国家重点实验室;;流域地理学重点实验室, 南京, 江苏 210098, 中国; 2.中国科学院地理科学与资源研究所, 中国科学院陆地水循环及地表过程重点实验室, 北京 100101, 中国; 3.中国人民解放军理工大学图书馆, 南京, 江苏 211101, 中国; 4.宁波市鄞州区气象局, 宁波, 浙江 315194, 中国
推荐引用方式 GB/T 7714	张丹,梁康,聂茸,等. 基于Budyko假设的流域蒸散发估算及其对气候与下垫面的敏感性分析[J]. 中国科学院地理科学与资源研究所,2016,38(6):1140-1148.
APA	张丹,梁康,聂茸,&顾人颖.(2016).基于Budyko假设的流域蒸散发估算及其对气候与下垫面的敏感性分析.资源科学,38(6),1140-1148.
MLA	张丹,et al."基于Budyko假设的流域蒸散发估算及其对气候与下垫面的敏感性分析".资源科学 38.6(2016):1140-1148.