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Replication Data for: Using leaf area index (LAI) to assess vegetation response to drought in Yunnan province of China

World Agroforestry - Research Data Repository Dataverse OAI Archive

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Title Replication Data for: Using leaf area index (LAI) to assess vegetation response to drought in Yunnan province of China
 
Identifier https://doi.org/10.34725/DVN/XYOU4Q
 
Creator Kim, Kwangchol
Wang, Ming-cheng
Ranjitkar, Sailesh
Liu, Suhong
Xu, Jianchu
Zomer, Robert J
 
Publisher World Agroforestry - Research Data Repository
 
Description Climatic extremes such as drought have becoming a severe climate-related problem in many regions all over the world that can induce anomalies in vegetation condition. Growth and CO2 uptake by plants are constrained to a large extent by drought. Therefore, it is important to understand the spatial and temporal responses of vegetation to drought across the various land cover types and different regions. Leaf area index (LAI) derived from Global Land Surface Satellite (GLASS) data was used to evaluate the response of vegetation to drought occurrence across Yunnan Province, China (2001-2010). The meteorological drought was assessed based on Standardized Precipitation Index (SPI) values. Pearson's correlation coefficients between LAI and SPI were examined across several timescales within six sub-regions of the Yunnan. Further, the drought-prone area was identified based on LAI anomaly values. Lag and cumulative effects of lack of precipitation on vegetation were evident, with significant correlations found using 3-, 6-, 9- and 12-month timescale. We found 9-month timescale has higher correlations compared to another timescale. Approximately 29.4% of Yunnan’s area was classified as drought-prone area, based on the LAI anomaly values. Most of this drought-prone area was distributed in the mountainous region of Yunnan. From the research, it is evident that GLASS LAI can be effectively used as an indicator for assessing drought conditions and it provide valuable information for drought risk defense and preparedness.
 
Subject Earth and Environmental Sciences
MODIS
Leaf area index distribution
Standardized Precipitation Index (SPI)
Drought
Yunnan
 
Contributor Sailesh Ranjitkar