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Correlation between spatial extent and duration of severe droughts process and its statistical law is analyzed using Palmer Drought Severity Index (PDSI) through a newly developed system of drought process monitoring. Results indicate that during the period from late 1990s to early 2000s, the percentage of severe drought (PDSI<;-3.0) in China is unprecedented since 1960 under the background of...
Cities are the dominant form of human settlements and their interaction with the global environment presents great challenges for sustainability. This paper analyzes the evolution of urban form in three rapidly-growing Chinese metropolitan areas in the Pearl River Delta: Shenzhen, Foshan and Guangzhou. It is the first study to utilize a combination of time-series satellite imagery, GIS, and a time-series...
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