Design guidelines for the Dashilar,Beijing Open Green Space Redevelopment Project

When an urban redevelopment project is planned, the design needs to reflect the preferences of the users of the planned space. In China, however, the preferences of residents have rarely been reflected in projects dealing with public places such as open green spaces in urban settings. This paper employs three independent conjoint analyses covering components of open green space, including locational conditions, physical conditions, and greenery conditions in order to propose the most preferable design for a new open green space. The results of choice simulation showed that the users prefer the private garden style to the general public park style for the new open green space in Dashilar. Our research with three independent conjoint analyses is expected to provide specific guidelines for open green space design as a whole, which is intended to satisfy potential users of the space.     

基于健康安全的棕地再开发决策模型构建及模拟研究——以广东省F市为例

为提高棕地再开发决策的科学性与安全性,以\"建设用地准入机制\"和\"土壤环境质量标准\"等为指导思想和标准依据,结合环境、经济、社会和地块特征等因素,构建棕地再开发决策指标体系及决策模型,运用模糊综合法对目标地块拟开发方向进行决策模拟.以广东省F市土壤环境质量调查和土地利用规划数据为基础,结合\"三旧改造\"规划方案,测算土壤污...     

基于DSR模型的煤矿废弃工业广场再开发时序评价体系

为提高煤矿废弃工业广场再开发效率,从\"城市双修\"视角出发,基于驱动力-状态-响应(driving force-state-response,DSR)模型框架,建立由3个一级指标、7个二级指标、16个三级指标组成的煤矿废弃工业广场再开发时序评价体系。以北京京西煤矿为例,采用赋值法进行指标量化分级,利用四象限法对驱动力D、状态S和响应R结果进行耦合处理。结果表明:长沟峪(D=3.818,S=3.848)、大台(D=3.732,S=4.603)和木城涧(D=2.646,S=4.522)划属近期开发;王平(D=4.240,S=3.187)、千军台(D=2.248,S=3.887)和大安山(D=1.792,S=4.39)划属中期开发;安家滩(D=2.118,S=1.464)和花坡根(D=2.798,S=1.907)划属远期开发。该时序评价体系将煤矿废弃工业广场再开发与城市发展紧密结合,以更全面的视角进行时序评价,准确性更高、适宜性更强,为同类型废弃工业广场再开发时序评价提供借鉴参考。     

基于GIS的水资源优化管理信息系统--以濮阳市水资源管理为例

结合GIS的功能和水资源管理的实际 ,通过河南濮阳市的应用实例 ,介绍了应用Arcview进行二次开发来构建水资源优化管理信息系统的方法、过程以及该系统的结构主要功能。该系统充分利用GIS强大的空间数据处理能力来管理水资源信息 ,并把泰森多边形法、水均衡法和水质综合评价模型融入到GIS中进行水资源管理 ,这种方法对其它中小城市水资源管理信息系统的建立具有借鉴意义。     

不同区位棕地再利用方式探讨

选取位于县城、城乡结合部、矿区等地的典型棕地案例,利用GPS和Google Earth定位棕地位置,结合重心法、层次分析法、耕地地力评价等方法,探索不同区位棕地最佳的再利用方式,总结棕地再利用的规律。结果显示,县城棕地经济价值高,再利用方式首选为商业用地;城乡结合部棕地再利用方式有多种选择,利用层次分析法筛选出公共用地为最佳利用方式;矿区棕地应注重土地修复和耕地恢复。     

Experiments on Ecological Restoration of Coal Mine Spoil using Native Trees in a Dry Tropical Environment, India: A Synthesis

A series of experiments was conducted on the rehabilitation of mine spoil in a dry tropical region of India for determining the suitability of tree species for plantation, growth performance of selected indigenous species in monoculture and impact of the plantations on the restoration of biological fertility of soil. All of the 17 indigenous species examined could grow in the mine spoil and the growth of a majority of them could be improved by amending the mine spoil with NPK fertilizer. Direct seeding showed greatest height of Zizyphus jujuba and Pongamia pinnata on flat surface, and of Azadirachta indica on slope. In terms of diameter, Syzygium cumini performed best on flat surface and Terminalia arjuna on slope. Total biomass in plantations of selected native tree species on mine spoil at 5-yr age varied from 7.2 to 74.7 t ha⁻¹, being minimum for Shorea robusta and maximum for Dendrocalamus strictus. Total net production ranged from 3.5 (for Shorea robusta) to 32.0 t ha⁻¹ yr⁻¹ (for Dendrocalamus strictus), respectively. Microbial biomass in the redeveloping soil was lower compared to that in natural forest soil but immobilization of soil C in microbial biomass was greater in the mine spoil than in the natural forest. The study indicated that net primary production of the plantations was a function of the amount of foliage, soil C was a function of the amount of litter fall and biomass C was a function of soil C. Plantation of trees significantly accelerated the soil redevelopment process on the mine spoil.     

系统论视角下欠发达县域城镇低效用地识别与再开发策略

城镇低效用地识别与再开发研究对提升土地利用效率与促进城镇高质量发展具有重要意义。基于系统论视角以山西省山区贫困县榆社县中心城区为案例地,将影响低效用地形成因素归纳为内部性质和外部特征两个维度,构建因地制宜的城镇低效用地识别评价指标体系,利用组合矩阵模型划分城镇低效用地内-外部性组合指数等级,辨识欠发达县域城镇低效用地范围,并提出城镇低效用地再开发策略。结果表明：1）榆社县商业用地内-外部性指数等级分布较为均匀,工业用地内-外部性指数等级均集中于低等级,居住用地内-外部性指数等级存在一定差异,其中外部性指数等级以低等级为主,内部性指数等级则表现出低等级与高等级均匀分布的特征。2）榆社县最终确定城镇低效用地25块,商业和工业低效用地占比不到10%,空间分布较为零散,不具有典型的空间性;居住低效用地占低效用地比例的90.06%,主要集中分布于城镇边缘地带和中心区域,可见居住用地仍然是欠发达地区城镇低效用地再开发主体。3）城镇低效用地存在空间分布和用地类型双重差异性,榆社县城镇低效用地再开发需针对空间分布特征和内-外部性主导影响因素精准施策,促进区域新农村建设。