干旱区生态环境知识资源中心(Arid): Impacts of climate variability and landscape pattern change on evapotranspiration in a grassland landscape mosaic

Arid

DOI	10.1002/hyp.13642
	Impacts of climate variability and landscape pattern change on evapotranspiration in a grassland landscape mosaic
	Yu, Deyong 1; Li, Xiaoyuan 1; Cao, Qian 1; Hao, Ruifang 2; Qiao, Jianmin 3
通讯作者	Yu, Deyong
来源期刊	HYDROLOGICAL PROCESSES
ISSN	0885-6087
EISSN	1099-1085
出版年	2020
卷号	34 期号:4 页码:1035-1051
英文摘要	Evapotranspiration (ET), a key component of the hydrological cycle, affects the transport of water and energy in the soil-vegetation-atmosphere system. Thus, quantifying the driving forces of ET dynamics is important to ensure rational water resource utilization. Based on meteorological and satellite data, spatiotemporal dynamics of ET were detected using the Surface Energy Balance System (SEBS) model, and effects of climate variability and landscape pattern change on ET dynamics in an arid to semiarid landscape mosaic during the growing season (April-October) from 2001 to 2015 in Xilingol League, China were evaluated. The results indicated that (a) a significant increase (P < .05) in ET was found in the north-eastern Xilingol League, and a significant decrease (P < .05) in ET was confined to the southwest and (b) climate variability had significant effects on ET dynamics. All climatic factors showed a positive correlation relationship with ET dynamics, and mean temperature (Ta) was the most influential climatic factor on ET dynamics followed by relative humidity (Rh), wind speed (Ws), and precipitation (Pr), respectively. The influence of landscape pattern change on ET dynamics was mainly reflected in the increase of the normalized difference vegetation index (NDVI) promoting ET dynamics. Several other landscape pattern metrics also had important impacts on ET dynamics, which were mainly reflected in the positive effect of the aggregation index (AI) on ET dynamics and the negative effects of the largest patch index (LPI), edge density (ED), and percentage of landscape (PLAND) on ET dynamics. To promote effective water resource utilization, landscape managers should continue to moderately implement vegetation restoration projects such as the Grain for Green Project, orient with conversion of low-quality cropland into grassland, and conserve large areas of grassland. Appropriate management measures for forests and cropland scattered in the landscape mosaic, based on local climate and soil properties, as well as socioeconomic goals, are also required.
英文关键词	driving force ecological project hydrological process landscape pattern SEBS model water resource utilization
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000502394700001
WOS关键词	LAND-USE CHANGES ; INNER-MONGOLIA ; GRAZING INTENSITY ; ENERGY-BALANCE ; SOIL-MOISTURE ; TRENDS ; COVER ; ECOSYSTEMS ; CATCHMENT ; DYNAMICS
WOS类目	Water Resources
WOS研究方向	Water Resources
EI主题词	2019-12-13
来源机构	北京师范大学 ; 北京林业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/311707
作者单位	1.Beijing Normal Univ, Fac Geog Sci, CHESS, State Key Lab Earth Surface Proc & Resource Ecol, Beijing, Peoples R China; 2.Beijing Forestry Univ, Sch Soil & Water Conservat, Beijing, Peoples R China; 3.Shandong Normal Univ, Sch Geog & Environm, Jinan, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Yu, Deyong,Li, Xiaoyuan,Cao, Qian,et al. Impacts of climate variability and landscape pattern change on evapotranspiration in a grassland landscape mosaic[J]. 北京师范大学, 北京林业大学,2020,34(4):1035-1051.
APA	Yu, Deyong,Li, Xiaoyuan,Cao, Qian,Hao, Ruifang,&Qiao, Jianmin.(2020).Impacts of climate variability and landscape pattern change on evapotranspiration in a grassland landscape mosaic.HYDROLOGICAL PROCESSES,34(4),1035-1051.
MLA	Yu, Deyong,et al."Impacts of climate variability and landscape pattern change on evapotranspiration in a grassland landscape mosaic".HYDROLOGICAL PROCESSES 34.4(2020):1035-1051.