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不同土地利用/覆被情景下生态系统减轻水库泥沙淤积的服务能力与经济价值模拟 被引量:6
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作者 吴楠 高吉喜 +5 位作者 苏德毕力格 罗遵兰 Driss Ennaanay Guillermo F.Mendoza 李岱青 田美荣 《生态学报》 CAS CSCD 北大核心 2009年第11期5912-5922,共11页
以ArcGIS9.2为平台,构建了生态系统减轻水库泥沙淤积服务物质量和价值量评估模型。整合2000年的相关数据将此模型应用于二滩水库,并模拟了10种不同土地利用/覆被情景下集水区生态系统该项服务的能力和在水库使用年限内服务总价值的响应... 以ArcGIS9.2为平台,构建了生态系统减轻水库泥沙淤积服务物质量和价值量评估模型。整合2000年的相关数据将此模型应用于二滩水库,并模拟了10种不同土地利用/覆被情景下集水区生态系统该项服务的能力和在水库使用年限内服务总价值的响应。结果表明:2000年,二滩水库集水区土壤保持量12.1亿.ta-1,高值区分布于雅砻江干流和支流水网附近。泥沙输移比在河道附近和水库周边较高。水库周边是最为主要的保沙区。水库使用年限内,集水区对于减轻二滩水库泥沙淤积服务总价值27.53亿元。集水区内不同结构类型的土地利用/覆被情景对保沙能力所产生的影响各异,模拟保沙量符合林地>草地>裸地>农田规律,农田保沙能力最弱,是二滩水库最为主要的产沙源。 展开更多
关键词 减轻水库泥沙淤积 集水区 泥沙输移比 经济价值 二滩水库 土地利用/覆被情景
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The Evolution Pattern and Simulation of Land Use in the Beijing Municipal Administrative Center(Tongzhou District) 被引量:3
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作者 LIU Yujie SHI Jinlian +1 位作者 ZHENG Yaomin HUANG Xiankai 《Journal of Resources and Ecology》 CSCD 2022年第2期270-284,共15页
Beijing Municipal Administrative Center(Beijing MC)in Tongzhou District has inherited the non-capital core functions of Beijing’s central urban area,and its rapid construction and development urgently require a scien... Beijing Municipal Administrative Center(Beijing MC)in Tongzhou District has inherited the non-capital core functions of Beijing’s central urban area,and its rapid construction and development urgently require a scientific understanding of the pattern of land use evolution in the region.This paper analyzes the pattern of land use evolution in Tongzhou District over the past 40 years,from 1980 to 2020.According to the historical evolutionary characteristics of land use and urban development planning goals,combined with the driving factors of cultural tourism development,the Future Land-use Simulation(FLUS)model is used to simulate the spatial distribution of land use in Beijing MC(Tongzhou District)in 2035 under three scenarios of urbanization acceleration,deceleration and sustainable development.The results show three major trends.(1)Beijing MC(Tongzhou District)is dominated by urban development and construction.During the high-speed urbanization stage from 1980 to 2010,the urban expansion pattern of“along the Sixth Ring Road and along the Grand Canal”was formed.During the low-speed urbanization stage from 2010 to 2020,the land distribution was stable,and Tongzhou District formed a pattern of urban-rural differentiation and land intensification from northwest to southeast.As a typical area of Tongzhou District’s urbanization,Beijing MC has the same characteristics of the temporal and spatial evolution as Tongzhou as a whole.(2)By 2035,there are significant differences in land use among the three scenarios with respect to the magnitude of change and spatial distribution.The area and distribution of ecological land under the urban sustainable development scenario are optimal,which is conducive to the realization of sustainable urban development.In analyzing the degree of conformity with the three Beijing MC zoning plans,the prediction simulation under the sustainable development scenario is highly consistent with the land use of the“Beijing Municipal Administrative Center Regulatory Detailed Planning(Block Level)(2016–2035)”(hereinafter referred to as“Planning”)issued by the municipal government.However,there are certain deviations between the simulation predictions in the cultural tourism function area and the livable living scenery area and the corresponding“Planning”expectations.During the urban construction process,the internal ecological land area still needs to be increased.(3)Tongzhou District may lack a close connection between the urban and rural areas in the southeast.Potential risks such as the imbalance in the development of northern and southern townships require further attention in the development process.The prediction and simulation results of the model can provide certain data and methodological support for the construction of a harmonious and livable city in Beijing MC(Tongzhou District). 展开更多
关键词 Beijing Municipal Administrative Center(Tongzhou District) land use/cover change FLUS model multi-scenario simulation urban sustainable development
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