杭州湾工业带经济发展对湿地的影响(英文)   总被引：1，自引：0，他引：1  

任丽燕  岳文泽  李加林  吴次芳 《地理学报(英文版)》2010,20(3):406-416

Based on Landsat TM images in 2005 and urban planning data of 2005-2020 in Hangzhou Bay Industrial Belt,this paper studied the potential risk of the planned urban construction land extension to the wetlands by employing a GIS spatial analysis method.The results show that:(1) The wetland resources are widely distributed and diverse,with a proximal distribution to present urban construction lands spatially.(2) From 2005 to 2020,the urban construction lands will expand vastly and rapidly,and will take over lar...  相似文献   

邢台沙河市冬季大气污染特征与潜在源区分析     

刘晓咏  王自发  王大玮  向伟玲  潘小乐  刘航  田雨  张瑜  王刘铭  李杰  苏方成  贺泓 《气候与环境研究》2019,24(3):313-323

为了解邢台沙河市冬季大气污染特征,选取2017年12月至2018年2月沙河市区3个省控站点（司法局、市政府、宣传中心）的逐时监测数据,分析了沙河市主要污染物的时空分布特征和潜在源区。污染物浓度特征分析表明:整个冬季司法局、市政府和宣传中心站点的细颗粒物（PM2.5）平均浓度分别为118.0 μg/m3、121 μg/m3和135 μg/m3。在大气自然活动和人为污染排放的共同作用下,PM10、PM2.5、SO₂、NO₂和CO均有明显的日变化特征。整个冬季沙河市的ρ(PM2.5)/ρ(PM10)、ρ(SO₂)/ρ(NO₂)均值分别为0.57和1.05（ρ为各物质的浓度）。且随着污染加重,ρ(PM2.5)/ρ(PM10)、ρ(SO₂)/ρ(NO₂)均明显升高,表明燃煤贡献增加;污染物空间分布特征分析表明:位于3个站点东北处的玻璃企业产生的污染物可能对监测站点造成了一定影响。污染物空间差异分析表明,区域污染范围越大、强度越高,大气污染的空间差异性越小;潜在源分析表明:沙河市PM2.5的强潜在源区分布在其周边区域,随着PM2.5浓度增加,强潜在源区呈缩小趋势。沙河市东南部的本地源对PM2.5浓度有主要贡献,而此处正是玻璃企业的聚集地。  相似文献   

Heavy Metal Pollution in Sediments from Aquatic Ecosystems in China     

Liwen Zhang  Hongbo Shao 《洁净——土壤、空气、水》2013,41(9):878-882

We conducted an analysis of heavy metals content, including As, Cd, Cr, Cu, Hg, Pb, and Zn in sediments from aquatic ecosystems in China measured in recent publications. Then, we evaluated the extent of heavy metal pollution in these ecosystems in seven different industrial districts in China (Dongbei, Huabei, Huazhong, Huanan, Huaxik, Xibei, and Huadong) with the potential ecological risk index. We found that Cd was the most concentrated pollutant, followed by Hg and As, while Cr, Cu, Pb, Zn were found in low concentrations in sediments from all types of aquatic ecosystem in China. Sediments collected from all seven industrial districts were heavily polluted, and the sequence, from most to least polluted was Dongbei>Huabei>Huazhong>Huanan>Huaxi>Xibei>Huadong. All four types of aquatic ecosystem were found to be seriously polluted and the sequence, from most to least polluted was: river>sea>lake>wetland. Specifically, Cd and Hg were the most serious pollutants in all four aquatic ecosystems, and As was also a serious pollutant in rivers. For the seven industrial districts studied the sea was the most polluted ecosystem in Dongbei, the river was the most polluted ecosystem in Huabei, Huanan, Huazhong, and the lake was the most polluted in Huadong, Huaxi, and Xibei.  相似文献   

Historical manufacturing volatility and local sustainability efforts: A link to the past     

《Global Environmental Change》2022

Renewed attention to the role of subnational efforts in addressing myriad environmental challenges necessitates a greater understanding of the factors associated with program adoption. Given observed relationships between adoption of sustainability practices and the presence of carbon-intensive industry, and separately the observed persistence of industrial history in a given place, we explore the link between historical manufacturing employment volatility and current sustainability plan adoption at the local level. Our analysis suggests that the magnitude of changes in manufacturing employment is inversely related to the likelihood of sustainability plan adoption. Our analysis further suggests that, given the same pace of change, counties with shrinking manufacturing employment are more likely to adopt sustainability plans than those with growing employment. Lastly, we find that the link between past industrial transitions and local sustainability commitment is moderated by local disaster experience and priority for environmental protection. Collectively, the findings also shed light on potential—and otherwise unobservable—barriers to transitions to sustainable practices at the local level. In particular, the inverse relationship between pace of employment change and plan adoption suggests that minimizing the rapidity of contemporary transitions may counterintuitively ease the eventual adoption of sustainability-related policies.  相似文献   

Evaluation of heavy metals and arsenic speciation discharged by the industrial activity on the Tinto-Odiel estuary, SW Spain     

Pérez-López R  Nieto JM  López-Cascajosa MJ  Díaz-Blanco MJ  Sarmiento AM  Oliveira V  Sánchez-Rodas D 《Marine pollution bulletin》2011,62(2):405-411

This study reports the annual amount of heavy metals discharged by industrial activity into the estuary of the Ría of Huelva (SW Spain). The findings showed that the discharged metals found in highest amounts were Fe (11 t y⁻¹), Zn (3.4 t y⁻¹) and Mo (0.88 t y⁻¹). There were other metals with high pollutant charge, such as Ti (232 kg y⁻¹), As (228 kg y⁻¹), Ni (195 kg y⁻¹), Pb (100 kg y⁻¹), Cr (39 kg y⁻¹) and Cd (33 kg y⁻¹). These results were compared with pollutants transported via the Tinto and Odiel rivers from abandoned mining activities in the Iberian Pyrite Belt (IPB), and it was deduced that the amounts spilled exclusively by industries were less than 1% in relation to the total discharge. Hence, the treatment of residues from the IPB should be the priority goal to improve water quality in the estuary.  相似文献   

河西走廊地区A(b)值动态演化特征及在地震预测中的应用     

苏宏伟  肖淑娟 《地震地磁观测与研究》2011,32(4):12-15

采用A(b)值空间扫描方法对1980年以来河西走廊及其临近地区ML 2.3到ML 4.9地震资料进行了研究,统计分析了Ms 4.6以上地震前A(b)值异常情况,结果显示大多数Ms 4.6以上地震发生前的1-3年内,震中周围出现A(b)≥5.0的高值异常区域.R值检验结果为0.458.  相似文献   

城市开发区工业与生活混合污水处理设计——以四川省成都市某工业开发区为例     

李娜  罗隆诚  赵绍燕 《地下水》2011,33(2):130-131

城市工业开发区建设时推荐我国工业规模化和产业结构升级的重要措施和手段.但随着而来的是各种各样的工业废水、生活污水汇聚,为城市污水处理厂设计和工艺选择提出了新的要求.文章以四川省成都市为例,生化处理部分采用改良A2/O工艺.结果表明,该工艺具有较好的除氮去磷效果,出水可稳定达到国家<城镇污水处理厂污染物排放标准>(GB1...  相似文献   

河西走廊地区石炭系—二叠系油气地质条件与含油气前景     

魏仙样  卢进才  魏建设  李玉宏 《地质通报》2011,30(6):865-878

对河西走廊地区石炭系—二叠系沉积演化、生烃条件、储集条件、生储盖组合类型和保存条件进行了研究,认为区内石炭系—二叠系具有良好的油气地质条件,是值得重视的油气勘探新层系。研究区早石炭世—早二叠世早期,以浅海相—海陆交互相沉积为主,前黑山组—太原组发育多套暗色泥岩或炭质泥岩为主的烃源岩,有机质含量中等—较高,以Ⅱ~Ⅲ型干酪根为主,烃源岩演化进入成熟—高成熟阶段;储集层以碎屑岩为主,成岩作用强烈,原始粒间孔隙不发育,但不乏溶蚀孔隙较发育的中等—较好的碎屑岩储集层,而且碳酸盐岩也是区内重要的储集层类;中生界为区域盖层,石炭系—二叠系内部的砂泥岩组合构成纵向上的储盖组合;可形成内生连续式、上生下储式、潜山式等多种生储盖组合类型。石炭系—二叠系广泛分布的油气苗或钻井油气显示,为存在油气生成、运移与聚集的过程提供了依据。  相似文献   

北京工业结构调整研究   总被引：4，自引：0，他引：4  

侯本旗 《地理科学》1994,14(4):371-377

  相似文献   

长春高新技术产业开发区绿地景观生态规划   总被引：1，自引：0，他引：1  

付瑶  汤洁  梁喜波 《地理科学》2008,28(2):200-204

开发区作为中国工业化和城市化快速推进的主要增长极和载体,承受着城市经济和城市建设带来的巨大环境压力。结合长春高新技术产业开发区绿地建设现状,指出绿地数量少且分布不均,城市建设大量挤占绿化用地,绿地布局结构和网络体系不够完善,绿地建设特色不突出是开发区绿地系统存在的问题。在此基础上,确定了到2020年开发区绿地率为45%,人均绿地面积为35.97m²,人均公共绿地面积为29.24 m²等绿地规划总体控制指标;提出了点、线、面相结合的"一环、两带、流绿、线网、多园"的环网式的绿地系统空间模式;从基质、廊道、斑块等景观生态要素规划了不同尺度绿地系统建设思路。  相似文献