Attribution analyses of evapotranspiration and gross primary productivity changes in Ziya-Daqing basins, China during 2001-2015

doi:10.1007/s00704-019-03004-6

	Attribution analyses of evapotranspiration and gross primary productivity changes in Ziya-Daqing basins, China during 2001-2015
	Liu, Yi 2,3; Mo, Xingguo 1,2; Hu, Shi 2; Chen, Xuejuan 2,3; Liu, Suxia 1,2
刊名	THEORETICAL AND APPLIED CLIMATOLOGY
	2020-02-01
卷号	139 期号:3-4 页码:1175-1189
ISSN号	0177-798X
DOI	10.1007/s00704-019-03004-6
通讯作者	Mo, Xingguo(moxg@igsnrr.ac.cn)
英文摘要	Evapotranspiration (ETa) and gross primary productivity (GPP) are two of the key flux indices in a basin system. This study investigated the evolutions of ETa and GPP and the contributions of climate variables and vegetation index over multiple land cover types, simulated by the VIP model (Vegetation Interfaces Processes, RS version) with Terra-Modis 250 m Normalized Difference Vegetation Index (NDVI) dataset in the Ziya-Daqing basins (ZDB), China, during 2001-2015. The nonparametric Mann-Kendall test was used to analyze the changes in ETa and GPP. Contributions to the variations of ETa and GPP were explored using a differential equation method. The analyses revealed that ETa and GPP were high in the eastern plain, and spatial distributions were mainly associated with distributions of the major land-cover types. ETa and GPP showed positive trends in the western Taihang Mountains and negative trends in the eastern plain region. The annual ETa and GPP increased from 2001 to 2015 in most land-use types except cropland and urban. The decreases in ETa and GPP were primarily attributed to solar dimming in cropland and urban. The increases in ETa and GPP mainly occurred in the natural land-cover types (e.g., mixed forest and grassland) as a tradeoff between the positive effect of greening and the negative effect of declined radiation. In ZDB, the contributions of net radiation, air temperature, wind speed, and leaf area index to the change in ETa were - 0.681%, - 0.379%, - 0.032%, and 1.442%, respectively. The contributions of net short-wave radiation, air temperature, relative humidity, and fraction of photosynthetically active radiation to the change in GPP were - 2.411%, 0.085%, - 0.020%, and 10.224%, respectively. Thus, the "greening" was the major reason for ETa and GPP increases in natural vegetations, whereas solar dimming was the major reason for ETa and GPP decreases in cropland.
WOS关键词	HAIHE RIVER-BASIN ; CLIMATE-CHANGE ; SPATIOTEMPORAL VARIATION ; NORTH-AMERICA ; WATER ; VEGETATION ; MODEL ; RESPONSES ; TRENDS ; VARIABILITY
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
出版者	SPRINGER WIEN
WOS记录号	WOS:000511528400027
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/132186]
专题	中国科学院地理科学与资源研究所
通讯作者	Mo, Xingguo
作者单位	1.Univ Chinese Acad Sci, Coll Resources & Environm, Sino Danish Ctr, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Liu, Yi,Mo, Xingguo,Hu, Shi,et al. Attribution analyses of evapotranspiration and gross primary productivity changes in Ziya-Daqing basins, China during 2001-2015[J]. THEORETICAL AND APPLIED CLIMATOLOGY,2020,139(3-4):1175-1189.
APA	Liu, Yi,Mo, Xingguo,Hu, Shi,Chen, Xuejuan,&Liu, Suxia.(2020).Attribution analyses of evapotranspiration and gross primary productivity changes in Ziya-Daqing basins, China during 2001-2015.THEORETICAL AND APPLIED CLIMATOLOGY,139(3-4),1175-1189.
MLA	Liu, Yi,et al."Attribution analyses of evapotranspiration and gross primary productivity changes in Ziya-Daqing basins, China during 2001-2015".THEORETICAL AND APPLIED CLIMATOLOGY 139.3-4(2020):1175-1189.