干旱区生态环境知识资源中心(Arid): Effects of Land Cover Change on Vegetation Carbon Source/Sink in Arid Terrestrial Ecosystems of Northwest China, 2001-2018

Arid

DOI	10.3390/rs15092471
	Effects of Land Cover Change on Vegetation Carbon Source/Sink in Arid Terrestrial Ecosystems of Northwest China, 2001-2018
	Tu, Haiyang; Jiapaer, Guli; Yu, Tao; Zhang, Liancheng; Chen, Bojian; Lin, Kaixiong; Li, Xu
通讯作者	Jiapaer, G
来源期刊	REMOTE SENSING
EISSN	2072-4292
出版年	2023
卷号	15 期号:9
英文摘要	The arid terrestrial ecosystem carbon cycle is one of the most important parts of the global carbon cycle, but it is vulnerable to external disturbances. As the most direct factor affecting the carbon cycle, how land cover change affects vegetation carbon sources/sinks in arid terrestrial ecosystems remains unclear. In this study, we chose the arid region of northwest China (ARNWC) as the study area and used net ecosystem productivity (NEP) as an indicator of vegetation carbon source/sink. Subsequently, we described the spatial distribution and temporal dynamics of vegetation carbon sources/sinks in the ARNWC from 2001-2018 by combining the Carnegie-Ames-Stanford Approach (CASA) and a soil microbial heterotrophic respiration (R-H) model and assessed the effects of land cover change on them through modeling scenario design. We found that land cover change had an obvious positive impact on vegetation carbon sinks. Among them, the effect of land cover type conversion contributed to an increase in total NEP of approximately 1.77 Tg C (reaching 15.55% of the original value), and after simultaneously considering the effect of vegetation growth enhancement, it contributed to an increase in total NEP of approximately 14.75 Tg C (reaching 129.61% of the original value). For different land cover types, cropland consistently contributed the most to the increment of NEP, and the regeneration of young and middle-aged forests also led to a significant increase in forest carbon sinks. Thus, our findings provide a reference for assessing the effects of land cover change on vegetation carbon sinks, and they indicated that cropland expansion and anthropogenic management dominated the growth of vegetation carbon sequestration in the ARNWC, that afforestation also benefits the carbon sink capacity of terrestrial ecosystems, and that attention should be paid to restoring and protecting native vegetation in forestland and grassland regions in the future.
英文关键词	net ecosystem productivity Carnegie-Ames-Stanford approach scenario design cropland expansion afforestation
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000988136900001
WOS关键词	EDDY COVARIANCE MEASUREMENTS ; NET PRIMARY PRODUCTIVITY ; CO2 FERTILIZATION ; CLIMATE CHANGES ; TENGGER DESERT ; USE EFFICIENCY ; RIVER-BASIN ; SINK ; FLUXES ; BUDGET
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/398266
推荐引用方式 GB/T 7714	Tu, Haiyang,Jiapaer, Guli,Yu, Tao,et al. Effects of Land Cover Change on Vegetation Carbon Source/Sink in Arid Terrestrial Ecosystems of Northwest China, 2001-2018[J],2023,15(9).
APA	Tu, Haiyang.,Jiapaer, Guli.,Yu, Tao.,Zhang, Liancheng.,Chen, Bojian.,...&Li, Xu.(2023).Effects of Land Cover Change on Vegetation Carbon Source/Sink in Arid Terrestrial Ecosystems of Northwest China, 2001-2018.REMOTE SENSING,15(9).
MLA	Tu, Haiyang,et al."Effects of Land Cover Change on Vegetation Carbon Source/Sink in Arid Terrestrial Ecosystems of Northwest China, 2001-2018".REMOTE SENSING 15.9(2023).