气候变化领域集成服务门户(CCPortal): Impacts of Climate Change and Human Activities on Plant Species a-Diversity across the Tibetan Grasslands

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DOI	10.3390/rs15112947
	Impacts of Climate Change and Human Activities on Plant Species a-Diversity across the Tibetan Grasslands
	Huang, Shaolin; Fu, Gang
发表日期	2023
EISSN	2072-4292
卷号	15 期号:11
英文摘要	Plant species a-diversity is closely correlated with ecosystem structures and functions. However, whether climate change and human activities will reduce plant species a-diversity remains controversial. In this study, potential (i.e., potential species richness: SRp, Shannonp, Simpsonp and Pieloup) and actual plant species a-diversity (i.e., actual species richness: SRa, Shannona, Simpsona and Pieloua) during 2000-2020 were quantified based on random forests in grasslands on the Tibetan Plateau. Overall, climate change had positive influences on potential plant species a-diversity across all the grassland systems. However, more than one-third areas showed decreasing trends for potential plant species a-diversity. Climate change increased the SRp at rates of 0.0060 and 0.0025 yr(-1) in alpine steppes and alpine meadows, respectively. Temperature change predominated the variations of Shannonp and Simpsonp, and radiation change predominated the variations of SRp and Pieloup. Geography position, local temperature, precipitation and radiation conditions regulated the impacts of climate change on potential species a-diversity. On average, human activities caused 1% plant species loss but elevated the Shannon, Simpson and Pielou by 26%, 4% and 5%, respectively. There were 46.51%, 81.08%, 61.26% and 61.10% areas showing positive effects of human activities on plant species richness, Shannon, Simpson and Pielou, respectively. There were less than 48% areas showing increasing trends of human activities' impacts on plant species a-diversity. Human activities increased plant species richness by 2% in alpine meadows but decreased plant species richness by 1% in alpine steppes. Accordingly, both the impacts of climate change and human activities on plant species a-diversity were not always negative and varied with space and grassland types. The study warned that both climate change and human activities may not cause as much species loss as expected. This study also cautioned that the impacts of radiation change on plant species a-diversity should be at least put on the same level as the impacts of climate warming and precipitation change on plant a-diversity.
关键词	biodiversity temperature sensitivity asymmetrical warming Tibetan Plateau alpine region
英文关键词	ALPINE MEADOW; GRAZING EXCLUSION; NITROGEN ADDITION; PRODUCTIVITY; BIODIVERSITY; COMMUNITY; RESPONSES; BACTERIAL; PLATEAU; FERTILIZATION
WOS研究方向	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS记录号	WOS:001005595600001
来源期刊	REMOTE SENSING
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283790
作者单位	Chinese Academy of Sciences; Institute of Geographic Sciences & Natural Resources Research, CAS
推荐引用方式 GB/T 7714	Huang, Shaolin,Fu, Gang. Impacts of Climate Change and Human Activities on Plant Species a-Diversity across the Tibetan Grasslands[J],2023,15(11).
APA	Huang, Shaolin,&Fu, Gang.(2023).Impacts of Climate Change and Human Activities on Plant Species a-Diversity across the Tibetan Grasslands.REMOTE SENSING,15(11).
MLA	Huang, Shaolin,et al."Impacts of Climate Change and Human Activities on Plant Species a-Diversity across the Tibetan Grasslands".REMOTE SENSING 15.11(2023).