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To prevent environmental degradation, China's central government launched the " Grain for Green Project " (GGP) in 1999. Since its beginning, the effects and influences of the GGP have been hotly debated among domestic and international scholars and policymakers. This paper is taking the County of Yanchuan in the Loess Plateau as a case study, examines the(More)
Keywords: Urban sprawl Urban boundaries Land-use information entropy model China's neo-urbanization Landsat images Landscape metrics a b s t r a c t Periodic monitoring and multi-scale characterization of urban sprawl is essential for improving urban planning and development. However, historical sprawl analysis is not well suited for the neo-urbanization(More)
We address a current question in econophysics: Are fluctuations in economic indices correlated? To this end, we analyze 1-minute data on a stock index, the Standard and Poor index of the 500 largest stocks. We extend the 6-year data base studied by Mantegna and Stanley by including the 13 years 1984–1996 inclusive, with a recording frequency of 15 seconds.(More)
Urban-rural development and transformation is profoundly changing the socioeconomic system as well as the natural environment. The study uses the AHP (Analytic Hierarchy Process) method to construct a top-down index of human activity based around five dimensions (population, land, industry, society, and environment) to evaluate the spatial characteristics(More)
In the original version of this Article, Affiliation 1 was incomplete. The correct affiliation is listed below. These errors have been corrected in both the HTML and PDF versions of the Article. This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the(More)
Historical land use information is essential to understanding the impact of anthropogenic modification of land use/cover on the temporal dynamics of environmental and ecological issues. However, due to a lack of spatial explicitness, complete thematic details and the conversion types for historical land use changes, the majority of historical land use(More)
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