长春市大气中NOx污染现状和机动车排放污染分担率研究

在分析长春市大气环境中NOx 污染源与浓度时间变化规律的基础上,对机动车尾气NOx 排放总量分担率、不同车型NOx 排放量分担率和NOx 浓度分担率进行了量化研究.结果表明,长春市机动车尾气NOx 排放总量分担率为34.8%,且呈逐年上升的趋势;重型柴油车和中型汽油车的分担率较高,居前两位;NOx 浓度分担率为38.41%,接近全国大型城市水平,市中心区域分担率水平很高.     

“睡莲”发电

英国ZM建筑公司日前设计出一种睡莲形状太阳能板,既能减少大气中二氧化碳排放量,还可使河道周围地区更具活力。     

热致死小球藻生物富集Cr3+的研究

研究了热致死小球藻对微量Cr^3 的生物吸附富集和机理。结果表明，培养72h左右的热致死小球藻吸附富集Cr^3 的能力最强；当pH为4．5—5．0，藻浓度为1—2g／L时，死体藻对Cr^3 有较好的生物吸附作用；随着Cr^3 浓度增加，单位质量藻的Cr^3 吸附量呈上升趋势，但其Cr^3 吸附率却急剧下降。热致死小球藻对Cr^3 的吸附可以用Freundlich模型描述，拟合方程为：q＝5．3369C11/2.6295，R^2＝0．9974；在生物吸附的起始阶段，藻体对Cr^3 的吸附较快，40min左右时藻体达到最大吸附量。     

中国地市工业集聚与污染排放的空间特征及计量检验

采用空间分析和计量模型等方法,研究中国285个地级及以上城市工业集聚和污染排放的空间特征及内在关系,结果表明：① 工业集聚与污染排放的重心分布、轨迹、距离、速度差异较大。东部的工业集聚水平高于中西部,工业污染中西部更突出。工业集聚与污染排放总体呈负相关关系,局域上分为低高、高低、低低3种关联类型。② 工业集聚在全国及东中西部均有利于降低工业污染,但是对不同区域减排作用的大小有所不同,作用由大到小依次是西部、中部和东部。③ 对于工业污染的防治,应继续走集聚化道路。东部要优化产业结构,控制合理的集聚规模;中西部应加强产业集聚,提高技术溢出的污染减排效应。     

我省城市水资源紧缺问题及其对策探讨

解决我省城市水资源紧缺问题有以下对策：（１）建立水资源管理模型，实施最优化开采方案；（２）防治水污染，实行废水资源化，对城市工业废水净化处理再利用；（３）实行地表水地下不相互调剂；（４）拦蓄降水和地表弃水，开发人工补给，建立地下水库；（５）建立节水型社会生产体系。     

Terrestrial carbon sequestration in southeast and south-central United States

Analyses of regional carbon sources and sinks are essential technologies in mitigating the accumulation of CO2 in the for assessing the economical feasibility of various carbon sequestration atmosphere and in preventing global warming. Such an inventory is a prerequisite for the regional trading of CO2 emission. As a U.S. Department of Energy Southeast Regional Carbon Sequestration Partner, we have estimated the state-level terrestrial carbon pools in the southeast and south-central US, and have projected the potential for terrestrial carbon sequestration in the region. This region includes： Alabama, Arkansas, Florida, Georgia, Louisiana, Mississippi, North Carolina, South Carolina, Tennessee, Texas, and Virginia. The total terrestrial carbon storage in southeast and south-central US （11 states） was estimated to be 21.1 Pg C. Total annual terrestrial carbon sink in the region was calculated to be 189.1 Tg C/a. Of the various carbon sinks, the annual forest carbon sink （estimated as 76 Tg C g/a） could compensate for 13% of the total annual greenhouse gas emission in the region in the early 1990s. Through proper policies and the use of best management practices, a further 9.3% of the total greenhouse gas emission could be offset by terrestrial sequestration （53.9 Tg C/a）.