Evaluation of the Balance of Water Resources in Multiple Spatial Scale Based on Lorenz Curves and Gini Coefficients

作者：Liu Haizhen, Xuefeng Sang, Ziqi Yan, Zuhao Zhou, SU Jianguang, Gang Chen · 年份：2015 · DOI：10.2991/gmee-15.2015.22 · 被引用次数：1 · 研究领域：Regional Economic and Spatial Analysis、Environmental Changes in China、Water Resources and Sustainability

Influenced by special topography and threedimensional climate, the distribution of water resources in Yunnan Province is obviously different form other regions. According to the official reports of water resources, related evaluations and planning in Yunnan Province in 2012, the interaction cutting relation between administrative regions and water resource divisions was studied with geography spatial analysis method, and the areas of cutting units were calculated, by which the water resources of per capita in city, county, township level administrative regions were figured out. The Lorenz curves and Gini coefficients, which were used to describe the differential allocation of revenue in economics qualitatively and quantitatively, were introduced to study the spatial balancein different spatial scales. Gini coefficients were 0.53, 0.64 and 0.69 respectively. Results show that in the processe of downscaling, the spatial distribution of water resources in Yunnan Province is increasingly unbalanced: water resource in northwest and southwest is relatively abundant, water resources of city group, which located in central Yunnan including dry-hot valley, are relatively short, and per capita water resources are star flashed on small scale distribution, which poses a challenge to security of water resource especially when Yunnan suffers a drought.