气候变化领域集成服务门户(CCPortal): Contributions of ecological programs to vegetation restoration in arid and semiarid China

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DOI	10.1088/1748-9326/abbde9
	Contributions of ecological programs to vegetation restoration in arid and semiarid China
	Cai D.; Ge Q.; Wang X.; Liu B.; Goudie A.S.; Hu S.
发表日期	2020
ISSN	17489318
卷号	15 期号:11
英文摘要	Over the past four decades, large-scale ecological programs, including the 'Great Green Wall Program' (1978-present), 'Grain for Green Program' (1999-present), 'Grassland Ecological Protection Program' (2000-present), and 'Beijing-Tianjin Sandstorm Source Control Project' (2002-present), were launched to restore vegetation, to combat desertification, and to control dust storms in arid and semiarid China. The gross investments of these programs have exceeded 1700 billion RMB (∼260 billion USD, accounting for ∼1% GDP in the region) by now, however, the effects of these programs on vegetation restoration have not been settled. In this study, the vegetation indices, land-uses, and climatic factors were used to estimate the contribution of the above programs on vegetation restoration. The results showed that consistent vegetation restoration has occurred in about 45.3% of the vegetated areas in arid and semiarid China from 1982 to 2000, and the percentage decreased to 33.6% after 2000 despite more ecological programs have been launched. Changes in climatic factors (precipitation, temperature, solar radiation, and wind speed) and elevated atmospheric CO2 concentration contributed more than 50% and 70% to vegetation restoration in periods of 1982-2000 and 2001-2015, respectively, however, the contribution rate of ecological programs kept stable at about 20%. Climate changes in the past forty years played a dominant role, although the ecological programs showed a noticeable effect on vegetation restoration. Further investment in ecological restoration practices might need to be critically evaluated on the cost-effectiveness. © 2020 The Author(s). Published by IOP Publishing Ltd.
英文关键词	arid and semiarid China; climate change; ecological program; vegetation restoration
语种	英语
scopus关键词	Climate change; Cost effectiveness; Ecology; Land use; Storms; Vegetation; Wind; Climatic factors; CO2 concentration; Contribution rate; Ecological project; Ecological protection; Ecological restoration; Vegetation index; Vegetation restoration; Restoration; accountability; arid region; desertification; dust storm; investment; restoration ecology; semiarid region; Beijing [China]; China; Tianjin
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/153476
作者单位	Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China; Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China; School of Geography and the Environment, University of Oxford, Oxford, OX1 3QY, United Kingdom
推荐引用方式 GB/T 7714	Cai D.,Ge Q.,Wang X.,et al. Contributions of ecological programs to vegetation restoration in arid and semiarid China[J],2020,15(11).
APA	Cai D.,Ge Q.,Wang X.,Liu B.,Goudie A.S.,&Hu S..(2020).Contributions of ecological programs to vegetation restoration in arid and semiarid China.Environmental Research Letters,15(11).
MLA	Cai D.,et al."Contributions of ecological programs to vegetation restoration in arid and semiarid China".Environmental Research Letters 15.11(2020).