干旱区生态环境知识资源中心(Arid): Rural outmigration generates a carbon sink in South China karst

Arid

DOI	10.1177/03091333231154177
	Rural outmigration generates a carbon sink in South China karst
	Chang, Jingyi; Yue, Yuemin; Tong, Xiaowei; Brandt, Martin; Zhang, Chunhua; Zhang, Xuemei; Qi, Xiangkun; Wang, Kelin
通讯作者	Yue, YM
来源期刊	PROGRESS IN PHYSICAL GEOGRAPHY-EARTH AND ENVIRONMENT
ISSN	0309-1333
EISSN	1477-0296
出版年	2023
卷号	47 期号:5 页码:655-667
英文摘要	China karst is a global hotspot of increasing vegetation cover, with ecological conservation projects being considered as the main driver. New research using global datasets also indicates that rural outmigration has contributed to increasing biomass at national scale. However, the link between rural outmigration and vegetation cover increase has not been established at regional scale, and it remains unclear as to whether increases in biomass do, in fact, improve the environmental conditions. In this study, we use local field and statistical data on population density and rocky desertification areas to study population movements and changes in aboveground biomass in relation to rocky desertification in South China karst during 2000-2017. Our results show that the urban population in this region increased by 8.3 million people between 2005 and 2015, and the rural population decreased by 4.8 million people. We find that aboveground biomass increased most in rural areas with low human pressure, and that there was an almost linear relationship between increase in biomass and rural outmigration, with the highest increase in aboveground biomass density (1.5 MgC ha(-1) yr(-1)) observed in areas where rural outmigration was highest, and the lowest increase in aboveground biomass density (1.1 MgC ha(-1) yr(-1)) where rural outmigration was lowest. Rocky desertification areas decreased with a higher level of rural outmigration. Using local field data, our study confirmed that rural outmigration can generate a carbon sink at regional scale by reducing rocky desertification.
英文关键词	Karst rural outmigration vegetation restoration carbon density rocky desertification
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000922365800001
WOS关键词	VEGETATION COVER ; POPULATION ; TOPOGRAPHY ; MIGRATION
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/398180
推荐引用方式 GB/T 7714	Chang, Jingyi,Yue, Yuemin,Tong, Xiaowei,et al. Rural outmigration generates a carbon sink in South China karst[J],2023,47(5):655-667.
APA	Chang, Jingyi.,Yue, Yuemin.,Tong, Xiaowei.,Brandt, Martin.,Zhang, Chunhua.,...&Wang, Kelin.(2023).Rural outmigration generates a carbon sink in South China karst.PROGRESS IN PHYSICAL GEOGRAPHY-EARTH AND ENVIRONMENT,47(5),655-667.
MLA	Chang, Jingyi,et al."Rural outmigration generates a carbon sink in South China karst".PROGRESS IN PHYSICAL GEOGRAPHY-EARTH AND ENVIRONMENT 47.5(2023):655-667.