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广州城市产业用地供应规模和结构时空特征及机制 被引量:4
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作者 金万富 杜德胜 +1 位作者 刘松 周春山 《人文地理》 CSSCI 北大核心 2022年第6期150-160,共11页
根据2007—2020年广州土地供应结果,利用数理统计和空间分析等方法探讨了城市产业供地规模和结构时空特征及机制。研究发现:(1)供地规模和存量用地占比上升,供地向重点开发区集聚。(2)第二产业供地比重下降,制造业下降明显。(3)第三产... 根据2007—2020年广州土地供应结果,利用数理统计和空间分析等方法探讨了城市产业供地规模和结构时空特征及机制。研究发现:(1)供地规模和存量用地占比上升,供地向重点开发区集聚。(2)第二产业供地比重下降,制造业下降明显。(3)第三产业供地比重上升,流通和社会公共需求服务部门上升明显。(4)46种行业供地比重变化可分持续下降、持续上升、先降后升、先升后降、波动类型。(5)各圈层供地结构存在差异,但均以房地产为主。(6)供地组合可分5大类,10个亚类,以生产和生活服务部门为主。(7)供地受政策工具、土地市场、集聚扩散、产业互动、产业生命周期和特殊城市本底等方面影响。 展开更多
关键词 城市产业用地 供地规模 供地结构 机制 广州
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Water Resource Allocation under Consideration of the National NIY Plan in Harbin, China
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作者 张焱 刘苏峡 陈军锋 《Journal of Resources and Ecology》 CSCD 2012年第2期161-168,共8页
Water resource allocation (WRA) is a useful but complicated topic in water resource management. With the targets set out in the Plan of Newly Increasing Yield (NIY) of 10×1011 Jin (1 kg=2 Jin) from 2009 to ... Water resource allocation (WRA) is a useful but complicated topic in water resource management. With the targets set out in the Plan of Newly Increasing Yield (NIY) of 10×1011 Jin (1 kg=2 Jin) from 2009 to 2020, the immediate question for the Songhua River Region (SHRR) is whether water is sufficient to support the required yield increase. Very few studies have considered to what degree this plan influences the solution of WRA and how to adapt. This paper used a multi-objective programming model for WRA across the Harbin region located in the SHRR in 2020 and 2030 (p=75%). The Harbin region can be classified into four types of sub-regions according to WRA: Type I is Harbin city zone. With rapid urbanization, Harbin city zone has the highest risk of agricultural water shortage. Considering the severe situation, there is little space for Harbin city zone to reach the NIY goal. Type II is sub-regions including Wuchang, Shangzhi and Binxian. There are some agricultural water shortage risks in this type region. Because the water shortage is relatively small, it is possible to increase agricultural production through strengthening agricultural water-saving countermeasures and constructing water conservation facilities. Type III is sub-regions including Acheng, Hulan, Mulan and Fangzheng. In this type region, there may be a water shortage if the rate of urbanization accelerates. According to local conditions, it is needed to enhance water-saving countermeasures to increase agricultural production to a certain degree. Type IV is sub-regions including Shuangcheng, Bayan, Yilan, Yanshou and Tonghe. There are good water conditions for the extensive development of agriculture. Nevertheless, in order to ensure an increase in agricultural production, it is necessary to enhance the way in which water is utilized and consider soil resources. These results will help decision makers make a scientific NIY plan for the Harbin region for sustainable utilization of regional water resources and an increase in agricultural production. 展开更多
关键词 the Harbin region supply and demand prediction multi-objective programming model genetic algorithm water resource allocation (WRA)
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