干旱区生态环境知识资源中心(Arid): Assessment the Influence of Climate and Human Activities in Vegetation Degradation using GIS and Remote Sensing Techniques

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DOI	10.1134/S1995425520060025
	Assessment the Influence of Climate and Human Activities in Vegetation Degradation using GIS and Remote Sensing Techniques
	Jahelnabi, Abdelrahim E.; Wu, Weicheng; Boloorani, Ali D.; Salem, Haytham M.; Nazeer, Majid; Fadoul, Sona M.; Khan, Muhammad S.
通讯作者	Jahelnabi, AE (corresponding author), East China Univ Technol, Key Lab Digital Land & Resources, Nanchang 330013, Jiangxi, Peoples R China. ; Jahelnabi, AE (corresponding author), Univ Khartoum, Fac Agr, Dept Agr Engn, Khartoum 13314, Sudan.
来源期刊	CONTEMPORARY PROBLEMS OF ECOLOGY
ISSN	1995-4255
EISSN	1995-4263
出版年	2020
卷号	13 期号:6 页码:685-693
英文摘要	Vegetation net primary productivity (NPP) reveals the plants capability to transform solar energy to photosynthesis. It can be used as an indicator of status of environmental processes affected by climate changes and human activities, especially in degraded areas such as Gadarif State, Sudan, where vegetation degradation has progressively taken place. In this study, three types of net primary productivity from 2000 to 2017 were used to assess the relative roles of climate variables and human activities on vegetation variability in the eastern part of Sudan (Gadarif State) by ordinary least-square regression technique. The three types of NPP are the actual NPP derived from MODIS data, potential NPP estimated using Thornthwaite memorial model and human-related NPP, the difference between the Potential NPP and actual NPP. The correlations between NPP and climate variables are calculated using Pearson's correlation coefficient. The results revealed that 91.7% of the study area has experienced vegetation degradation caused by human activities with a variation of 97.95% in NPP. In contrast, 8.3% of the study area has a recovery by 2.05% of increase in NPP favored by climate change. The main driving forces of vegetation degradation are human activities, and the dominant factor for vegetation reversion is climate. No clear interaction between the two factors (climate change and human activities) was observed in the study area throughout the period of study. Thus, we concluded that NPP is a good indicator for assessing the relative roles of climate changes and human activities in vegetation cover dynamics that has obviously occurred in almost all districts of Gadarif, Sudan.
英文关键词	net primary productivity (NPP) climate human activities vegetation degradation remote sensing techniques
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000601534600012
WOS关键词	NET PRIMARY PRODUCTIVITY ; LAND DEGRADATION ; CHINA ; DESERTIFICATION ; VARIABILITY ; COVER
WOS类目	Ecology
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/348793
作者单位	[Jahelnabi, Abdelrahim E.; Wu, Weicheng; Boloorani, Ali D.; Salem, Haytham M.; Nazeer, Majid; Khan, Muhammad S.] East China Univ Technol, Key Lab Digital Land & Resources, Nanchang 330013, Jiangxi, Peoples R China; [Jahelnabi, Abdelrahim E.] Univ Khartoum, Fac Agr, Dept Agr Engn, Khartoum 13314, Sudan; [Boloorani, Ali D.] Univ Tehran, Fac Geog, Dept GIS & RS, Tehran, Iran; [Salem, Haytham M.] Desert Res Ctr, Dept Soil & Water Conservat, Cairo 11753, Egypt; [Fadoul, Sona M.] Univ Khartoum, Fac Forest, Dept Forest Conservat & Protect, Khartoum 13314, Sudan; [Khan, Muhammad S.] Comsats Univ Islamabad, Dept Earth Sci, Abbottabad, Pakistan
推荐引用方式 GB/T 7714	Jahelnabi, Abdelrahim E.,Wu, Weicheng,Boloorani, Ali D.,et al. Assessment the Influence of Climate and Human Activities in Vegetation Degradation using GIS and Remote Sensing Techniques[J],2020,13(6):685-693.
APA	Jahelnabi, Abdelrahim E..,Wu, Weicheng.,Boloorani, Ali D..,Salem, Haytham M..,Nazeer, Majid.,...&Khan, Muhammad S..(2020).Assessment the Influence of Climate and Human Activities in Vegetation Degradation using GIS and Remote Sensing Techniques.CONTEMPORARY PROBLEMS OF ECOLOGY,13(6),685-693.
MLA	Jahelnabi, Abdelrahim E.,et al."Assessment the Influence of Climate and Human Activities in Vegetation Degradation using GIS and Remote Sensing Techniques".CONTEMPORARY PROBLEMS OF ECOLOGY 13.6(2020):685-693.