Urban Land-banking Planning： A New Instrument to Regulate Urban Land Supply-demand of Nanjing City

It is the major purpose of the paper to present the urban land-banking planning and its functions of promoting the urban land-banking system and land use administration. The urban land-banking system has the potential attribute of acting as an irreplaceable role in urban land administration, but its unexpected function-deviation has impacted its implementation effect in China. A few city governments are attempting to deal with the problem by the urban land-banking planning which is expected to contribute to the extension of urban function, optimization of urban patterns, promotion of urban core competitiveness and overall construction of the urban value chain. In this paper, we primarily discuss the necessity, functions, purposes and main contents of the urban land-banking planning. Subsequently, the implementing situation of the urban land-banking system in Nanjing is analyzed, including its integrated mode, spatio-temporal quantitative distribution and main characteristics. Finally, the background and targets including total, compositions, space, and regulation points are gradually introduced to present the Nanjing land-banking planning version 2.     

Correlation between Urban Land Change Process and Socioeconomic Development since the 1980s in Jiangsu Province

Studying the process and characteristics of urban land change in different phases of urbanization and different economic development is much important for understanding urban land change and management at a macro level. Taking the example of Jiangsu Province, the present paper studied the correlation between urban land change process and socioeconomic development from 1981 to 2003 on the basis of statistical data. The results showed the following three aspects. First, urban land area has changed periodically and the research duration can be divided into two periods: from 1981 to 1994 and from 1995 to 2003. In each period, the changing trend is the same, i.e. slow at first and then quick. Studying from the comprehensive change status, the characteristic of fluctuant change is significant with three acute change pinnacles in 1988, 1991 and 2002 which were corresponded to turning point years of economic development phases of Jiangsu Province respectively. Second, the synchronization between urban land change and urbanization level change is not strict. With the evolution of urbanization phases, the change pace of urbanization level increased remarkably, but urban land change rate did not increase significantly accordingly. Third, the area of urban land has exponentially increased with the increase of per capita GDP. In different economic development levels classified by per capital GDP, land resource cost for economic development is different, respectively 29.01 hm2, 26.34 hm2, 26.22 hm2, and 11.14 hm2 for the increase of 100 million RMB GDP when the per capita GDP is under 1000, 1000–2000, 2000–5000 and over 5000 RMB.     

固定化SRB小球吸附乳酸钠及处理Cd(Ⅱ)的研究

用聚乙烯醇(PVA)-硼酸包埋法对硫酸盐还原菌(SRB)进行固定, 考察加入PVA、SRB污泥、碾磨颗粒活性炭的量对其吸附乳酸钠的影响, 从而确定平衡参数, 进行吸附平衡分析.同时还考察Cd2 浓度、温度等因子对其处理Cd2 的影响.结果表明: 添加15%PVA, 6%碾磨颗粒活性炭, 40%SRB污泥后, 固定化小球的平衡时间为3.5 h, 平衡吸附量为6.1 mg/g,该吸附过程属于物理吸附;当Cd2 ≤900 mg/L时,其去除率均超过90%;且在100mg/L Cd2 ,pH 7.0,温度30 ℃时,Cd2 处理率更高达98.5%;而固定化SRB受初始pH和转速的影响不显著,受温度的影响稍显著.     

环境价值评估方法

环境价值评估是环境管理科学化的基础。本文就迄今为止的国内外定价技术进行了综述并筛选出一套适合我国国情的价值评估体系、方法。     

用聚合硫酸铁絮凝法处理缫丝煮茧废水实验室试验

介绍了用絮凝法处理重庆北碚缫丝厂煮茧废水试验。结果证明，在适合的絮凝条件下，用聚合硫酸铁－聚丙烯酰胺处理废水，ＣＯＤ和色度法去除率达７８％和９６％，而用聚合硫酸铁－过氧化氢处理，ＣＯＤ和色度去除率都可达９２％。     

盐间非砂岩低渗透油藏中原油运移动力学分析

独特的江汉盆地潜江凹陷潜江组盐间非砂岩油藏生储同层 ,盐岩封盖条件极佳 ,但储集层渗透能力极低 ,油气运移条件差。目前的众多证据表明 ,就是在渗透能力如此低下的盐间层中 ,非断裂区的原油也顺层发生了一定规模的运移。在压实作用、流体热增压、有机质生烃生气增压以及毛细管压差等应力作用下 ,盐间原油得以从烃源岩层中排除 ,并在低渗透的盐间层运移主干道中顺层侧向 (或断裂区垂向穿层 )从生烃次洼向构造高部位等低势区聚集。从动力学的角度证明了盐间非砂岩低渗透油藏中原油顺层运移的可能性 ,并指出了盐间石油的运移方向和有利聚集区。     

“以电代煤”环境效益分析

目前 ,我国只有约 1 /3的煤用于发电 ,远低于发达国家的水平。要改善我国特别是城市大气环境状况 ,实行“以电代煤”是一条最有效的途径。本文以上海、北京、柳州等城市为例 ,分析了“以电代煤”的环境效益 ,并指出 ,使用电力作为最终消费方式 ,最清洁、方便 ,效率最高 ,也最易于控制。     

矿物纤维粉尘的环境健康效应研究

研究者运用表面化学，电化学和细胞培养等生化方法，以及IR，XRF，UV等谱学和电子微束手段，通过对主要6类不同形态矿物粉尘的特征，表面官能团和活性位分析以及电化学，溶解，毒性研究等，提出了表面介体的概念并初步验证了它的存在，从表面官能团，表面综合性状探讨了矿物纤维材料的表面化学活性一生物活性－生物持久性－生物毒性－环境安全性；提出界／膜体系来研究矿物生产生物毒性的过程和所依存的条件；对矿物粉尘在Gamble溶液，血清与生物大分子，人体有机酸，氨基酸，维生素中以及动物体内行为的研究，进一步阐明了在氨基酸／蛋白质／功能膜以及含有外露蛋白质的其它有机体单元中粉尘的溶解，反应，络合与破坏，粉尘中的硅成分在体内的残留，溶解，运移方式，选择性吸附体液中的脂－醇类物质，红细胞及其残片，粉尘与体内物质交换及免疫细胞的相互作用过程，提供了降低粉尘毒性的处理方式。     

长江,嘉陵江重庆城区段水污染控制方案费用估算

提出了城市污水一、二级处理厂基建费用指标，城市污水转移输送管道建设费用指标，城市污水泵站建立费用指标，城市污水排江管道费用指标等，并对长江喜陵江重庆城区段水污染控制规划提出了８个方案进行了费用估算。     

漓江桂林段酞酸酯类污染调查

对漓江桂林段酞酸酯类污染为期一年的调查结果表明，漓江桂林段已检出酞酸酯，并且河水中酞酸酯含量的高低与环境温度有直接关系，气温高时，河水中酞酸酯含量高，当河流流泾城市时，大量生活废水的汇入，不会导致河水中酞酸酯含量的增加。