《Table 2 Matrix classification of ecological-economic value and development regulation》

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《"Spatial Function Regionalization Based on an Ecological-economic Analysis in Wuxi City, China"》

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In the early 19th century，geographers began to attempt regionalization based on their cognition of natural tokens.German geographer Humboldt’s Isotherm Table，Russian geographer Dokuchaev’s Soil Belt Theory and Hommever’s Four-grade Geographical Units Theory initiated the research on the spatial regionalization of land use（Wu et al.，2003）.Based on natural and economic elements，some researchers studied spatial function regionalization to guide land use and space control.As early as the 1920s，the United States initiated startedland-use zoning，stipulating the scope of zoning，types of utilization and permitted maximums of exploitation and in the 1960s，issued a series of regulations to ensure the implementation of land-use zoning（Baics and Meisterlin，2016；Lin et al.，2016）.Land carrying capacity could be assessed with potentially restrictive elements，thereby categorizing the assessed land into four types of environmentally sensitive zones that are ecologically critical areas in perpetuity（Knaap，2001）.McHarg（1997）denoted the natural and economic attributes of a research area on a map and divided the development subarea using a map overlay.A Sino-German joint project，the Jiangning Nanjing Project，proposed the notion of a matrix classification of ecological conservation value versus economic and social development，which was quite conducive to making overall plans for land use in terms of both the environment and the economy.