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Drought Impact on Vegetation Productivity in the Lower Mekong Basin

Zhang, Binghua and Zhang, Li and Guo, Huadong and Leinenkugel, Patrick and Shen, Qian (2014) Drought Impact on Vegetation Productivity in the Lower Mekong Basin. International Journal of Remote Sensing, 35 (8), pp. 2835-2856. Taylor & Francis. DOI: 10.1080/01431161.2014.890298 ISSN 0143-1161

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Abstract

The Lower Mekong Basin (LMB) has a typical monsoon climate, with high temperature and uneven distribution of precipitation throughout the year. As a result of climate change, the LMB has experienced extreme weather conditions during the past few decades. Few studies have focused on changes in net primary productivity (NPP) and the impacts of drought on NPP in the LMB. In th is study, we use MOD17 product to detect variations in NPP during the period 2000–2011 and assess the imapcts of climate and drought on NPP in the LMB. We found that: (1) NPP in the LMB has large variations during the period 2000-2011. Among the five countries, Cambodia experienced the largest NPP variations where is dominated by evergreen forest. Whereas NPP variation was the least in Thailand where is dominated by cropland. (2) Increased temperature caused reduced NPP, therefore negative correlation between temperature and NPP anomaly was identified in Lao PDR. In Cambodia and Southern Lao PDR, decreased precipitation caused reduced NPP, therefore positive correlation between precipitation and NPP was identified. (3) Severe droughts occurred in 2005 and 2010, which induced NPP reductions of 14.7% and 8.4%, respectively. Cambodia was the most severely affected country in 2005, with NPP reductions of 22%. Lao PDR was the most severely affected country in 2010, with NPP reduction of 12.6%. (4) Other factors, such as flooding and human activity, may also have impacts on NPP variations.

Item URL in elib:https://elib.dlr.de/83366/
Document Type:Article
Title:Drought Impact on Vegetation Productivity in the Lower Mekong Basin
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Zhang, BinghuaInstitute of Remote Sensing and Digital Earth, Chinese Academy of Sciences UNSPECIFIED
Zhang, LiInstitute of Remote Sensing and Digital Earth, Chinese Academy of Sciences UNSPECIFIED
Guo, HuadongInstitute of Remote Sensing and Digital Earth, Chinese Academy of Sciences UNSPECIFIED
Leinenkugel, Patrickpatrick.leinenkugel (at) dlr.deUNSPECIFIED
Shen, QianInstitute of Remote Sensing and Digital Earth, Chinese Academy of SciencesUNSPECIFIED
Date:2014
Journal or Publication Title:International Journal of Remote Sensing
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:35
DOI :10.1080/01431161.2014.890298
Page Range:pp. 2835-2856
Publisher:Taylor & Francis
ISSN:0143-1161
Status:Published
Keywords:LMB; climate change; NPP; drought
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben Fernerkundung der Landoberfläche (old)
Location: Oberpfaffenhofen
Institutes and Institutions:German Remote Sensing Data Center > Land Surface
Deposited By: Leinenkugel, Patrick
Deposited On:17 Jul 2013 13:25
Last Modified:10 Jan 2019 15:48

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