Temporal effects of climate on vegetation trigger the response biases of vegetation to human activities

doi:10.1016/j.gecco.2021.e01827

	Temporal effects of climate on vegetation trigger the response biases of vegetation to human activities
	Liu, Ning 2,3; Ding, Yongxia 1; Peng, Shouzhang 4
刊名	GLOBAL ECOLOGY AND CONSERVATION
	2021-11-01
卷号	31 页码:11
关键词	Climate Human activities Temporal effects Tibetan Plateau Vegetation growth
DOI	10.1016/j.gecco.2021.e01827
通讯作者	Peng, Shouzhang(szp@nwafu.edu.cn)
英文摘要	Quantitatively distinguishing the effects of human activities and climate change on vegetation change is crucial for planning scientific vegetation management measures. Previous studies have employed the residual trend method (RESTREND) and remote sensing data to address this issue. However, the mathematical relationships between climate and remote sensing vegetation index under RESTREND are variable and not comprehensively described due to temporal effects of climate on vegetation. Using Tibetan Plateau (TP), this study investigated how the temporal effects of climate on vegetation trigger response biases of vegetation to human activities under four temporal effects (no temporal effect [No], temporal lag effect [Lag], temporal accumulation effect [Acc], and both temporal lag and temporal accumulation effects [Lagacc]). The results revealed the following. (1) The mean explanation degrees of climatic factors to vegetation growth over entire TP under No, Lag, Acc, and Lagacc effects were 0.41 +/- 0.02, 0.42 +/- 0.02, 0.44 +/- 0.02, and 0.47 +/- 0.02, respectively. Therefore, the Lagacc effect is the best temporal effect for establishing the vegetation-climate relationships. (2) Under the Lagacc effect, the temperature exhibited 1.60 +/- 0.13 months lag and 4.56 +/- 0.28 months accumulation on vegetation growth over entire the TP, whereas the precipitation exhibited 1.57 +/- 0.16 months lag and 4.99 +/- 0.31 months accumulation. Furthermore, the grids affected by the combined temporal lag and temporal accumulation effects of climatic factors accounted for 43.42-45.78% of the total grids. These indicated the temporal effects of climate on vegetation, and vegetation growth was largely affected by the combined temporal effects of climatic factors. (3) Under the Lagacc effect, 11.6% of the region experienced significant residual increase, and the slope of the residual was 22.2 x 10(-4), which was primarily distributed in the north and southeast of the TP. However, the area and slope of significant residual decrease were 1.3% and 24.0 x 10(-4), respectively, which were primarily distributed in the center of the TP. Furthermore, the average contributions of human activities on vegetation growth in the regions of residual significant increase and decrease were 54.5% and 55.5%, respectively. Therefore, the Lagacc effect exhibited the smallest influence area and the lowest influence degree for the contribution of human activities on vegetation growth. We thus suggest that the Lagacc effect should be fully considered when establishing the mathematical relationship between climatic factors and the vegetation index.
资助项目	Second Tibetan Plateau Scientific Expedition and Research Program (STEP)[2019QZKK0603] ; National Natural Science Foundation of China[42077451]
WOS关键词	TIBETAN PLATEAU ; GRASSLAND PRODUCTIVITY ; ALPINE GRASSLANDS ; DROUGHT ; DEGRADATION ; CHINA ; NDVI ; RESTORATION ; VARIABILITY ; DYNAMICS
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000697669600001
资助机构	Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/165644]
专题	中国科学院地理科学与资源研究所
通讯作者	Peng, Shouzhang
作者单位	1.Baoji Univ Arts & Sci, Coll Geog & Environm, Shaanxi Key Lab Disasters Monitoring & Mech Simul, Baoji 721013, Peoples R China 2.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Liu, Ning,Ding, Yongxia,Peng, Shouzhang. Temporal effects of climate on vegetation trigger the response biases of vegetation to human activities[J]. GLOBAL ECOLOGY AND CONSERVATION,2021,31:11.
APA	Liu, Ning,Ding, Yongxia,&Peng, Shouzhang.(2021).Temporal effects of climate on vegetation trigger the response biases of vegetation to human activities.GLOBAL ECOLOGY AND CONSERVATION,31,11.
MLA	Liu, Ning,et al."Temporal effects of climate on vegetation trigger the response biases of vegetation to human activities".GLOBAL ECOLOGY AND CONSERVATION 31(2021):11.