干旱区生态环境知识资源中心(Arid): Isolating the Impacts of Land Use/Cover Change and Climate Change on the GPP in the Heihe River Basin of China

Arid

DOI	10.1029/2020JG005734
	Isolating the Impacts of Land Use/Cover Change and Climate Change on the GPP in the Heihe River Basin of China
	You, Nanshan; Meng, Jijun; Zhu, Lijun; Jiang, Song; Zhu, Likai; Li, Feng; Kuo, Li-Jen
通讯作者	Meng, JJ ; Zhu, LJ
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
ISSN	2169-8953
EISSN	2169-8961
出版年	2020
卷号	125 期号:10
英文摘要	Terrestrial gross primary production (GPP) is a key indicator of the ecosystem response to climate change and land use/cover change (LUCC) in arid areas. The available global GPP data sets cannot meet the demands for local applications in arid areas due to sparse vegetation and extreme climate conditions. Here, we developed a novel GPP estimation model for the Heihe River Basin (HRB), the second largest inland river basin in northern China, and disentangled the impacts of climate change and LUCC on GPP. First, we calibrated the vegetation photosynthesis model (VPM) using CO2 flux observations from multiple stations in the HRB and developed a modified local GPP model (HRB-VPM). Then, we decoupled the joint effects of LUCC and climate change on GPP based on the log and differential transformation method. The results showed that HRB-VPM outperformed Moderate Resolution Imaging Spectroradiometer and VPM GPP models in arid ecosystems. The root mean square error of HRB-VPM was 4.9 and 1.5 gCm(-2) day(-1) lower than those of the Moderate Resolution Imaging Spectroradiometer and VPM models, respectively. We concluded that the underlying driving forces of the GPP changes were distinct across the HRB. In the upper reach, climate change accounted for 65.8% of GPP changes, while in the middle and lower reaches, LUCC contributed to 75.1% of GPP changes. Our research provides an effective way to monitor arid ecosystem degradation and is useful for mitigating the negative impacts of human activities and future climate change.
英文关键词	GPP land use and land cover change climate change attritube analyses interannual variability VPM
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000586701500007
WOS关键词	GROSS PRIMARY PRODUCTION ; CARBON-DIOXIDE UPTAKE ; EDDY-COVARIANCE ; USE EFFICIENCY ; INTERANNUAL VARIATIONS ; PRIMARY PRODUCTIVITY ; SATELLITE ; FOREST ; FLUXES ; MODEL
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary
WOS研究方向	Environmental Sciences & Ecology ; Geology
来源机构	中国科学院地理科学与资源研究所 ; 北京大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/327374
作者单位	[You, Nanshan; Meng, Jijun; Zhu, Lijun; Jiang, Song; Zhu, Likai; Li, Feng; Kuo, Li-Jen] Peking Univ, Coll Urban & Environm Sci, Key Lab Earth Surface Proc, Minist Educ, Beijing, Peoples R China; [You, Nanshan] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing, Peoples R China; [Zhu, Likai] Linyi Univ, Coll Resources & Environm, Shandong Prov Key Lab Water & Soil Conservat & En, Linyi, Shandong, Peoples R China
推荐引用方式 GB/T 7714	You, Nanshan,Meng, Jijun,Zhu, Lijun,et al. Isolating the Impacts of Land Use/Cover Change and Climate Change on the GPP in the Heihe River Basin of China[J]. 中国科学院地理科学与资源研究所, 北京大学,2020,125(10).
APA	You, Nanshan.,Meng, Jijun.,Zhu, Lijun.,Jiang, Song.,Zhu, Likai.,...&Kuo, Li-Jen.(2020).Isolating the Impacts of Land Use/Cover Change and Climate Change on the GPP in the Heihe River Basin of China.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,125(10).
MLA	You, Nanshan,et al."Isolating the Impacts of Land Use/Cover Change and Climate Change on the GPP in the Heihe River Basin of China".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 125.10(2020).