科研之友
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摘要
Rapid urbanization and industrialization accelerate economic development, but have a negative influence on environments. The aim of this study is to attempt to handle the relationships properly between them, a hot topic all over the world. Based on the reviews of land allocation and the previous research on ecological storage, this paper takes both economic and ecological considerations into account in the framework design of land allocation model, and then proposes Primary Development and Secondary Optimization Model for Land Allocation (PDSO-LA model), together with a series of other models/approaches for judgment, analysis and test. The model follows the past, present and future land use and ecosystems and sets up relevant constraints, but more emphasizes the trade-offs within and between structural and functional ecological storage. Especially, this study gives a new trial idea and approach to estimate the converted equivalents for balanced individual functions-orientated sub-ecosystems in the modeled part for secondary optimization. In order to verify the availability and practicability of PDSO-LA model, this paper takes Wu'an as a case study and makes sufficient investigations. The results show that the volumes of structural ecological storage after allocation in 2010 and 2020 will reach 5865.24 RMB/ha and 6096.21 RMB/ha, in a rising trend, and its orderly change will be enhanced; in contrast, though land allocation cannot basically change the disorder trend for functional ecological storage, the intensity of disorder can be mitigated by using PDSO-LA model. Thus, it is concluded that PDSO-LA model can effectively improve or at least mitigate the disorder of trade-offs.
- 出版日期2014-1-24
- 单位中国地质大学（北京）
