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Spatial Distribution of Heavy Metals in Agricultural Soils of an Industry-Based peri-urban area in Wuxi, China

Pedosphere 2007年第1期17卷 44-51页

作者： ZHAO Yan-Feng SHI Xue-Zheng HUANG Biao YU Dong-Sheng WANG Hong-Jie SUN Wei-Xia I. OEBOERN K. BLOMBACK State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil Science Chinese Academy of Sciences Nanjing 210008 （China） Department of Soil Science the Swedish University of Agricultural Sciences SE-75007 Uppsala （Sweden） Graduate School of the Chinese Academy of Sciences Beijing 100039 （China）

In industry-oriented peri-urban areas, the heavy metal accumulation in soils caused by industrialization has become a potential threat. The top soil samples from 27 paddy fields and 75 vegetable fields were collected from a typical industry- based peri-urban area of about 8 km^2 in Wuxi, China, to study the accumulation and distribution of As, Hg, Cu, Zn, Pb, Cr, and Cd in comparison with heavy metal contents in soils near developed industrial sites （Guangzhou, China; Wallsend Burn of Tyneside, UK; and Osnabrück, Germany）. Kriging interpolation was used to determine the metals, spatial distribution. The results showed that most soils, compared to the background values, contained elevated contents of As, Hg, Cu, Zn, and Pb with some having elevated contents of Cd and Cr. Except for less than 10% of the soil samples of Cu, Zn and Cd contents, these heavy metal contents were lower than the soil threshold levels of the Grade Ⅱ criteria for the Chinese environmental quality standard. Probably, because of the scattered distribution and diversity of industries in the study area, spatial distributions of these heavy metals from Kriging interpolation indicated little similarity. Nevertheless, when compared with other areas in the Taihu Lake region, mean contents of Cu, Zn, Pb, and Cd were relatively high in the Wuxi peri-urban area. Additionally, compared to soils in agricultural areas around Guangzhou, Osnabrück, or Wallsend Burn, contents of most heavy metals in soils from this area were lower.

关键词： agricultural soil heavy metals peri-urban area spatial distribution

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Function of Agricultural Land Use and Its Evolvement in peri-urban area: A Case Study of Beijing

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Chinese Journal of Population,Resources and Environment 2007年第2期5卷 67-71页

作者： Yuan Hong, Cai Jianming, Jiang Fang, Liu Shenghe Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China Institute of Geographical Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China

Rapid urbanization in Beijing stimulates the urban land expansion and diminishes available agricultural land. Monofunctional agricultural land use can not meet the demand of the devel- opment of the multifunctional agriculture and urbanization any more, so multifunctional agricultural land use is going to be promoted in the city. This article proposes the evolvement of the land use change from 1992 to 2004 and discusses some evolvement views.

关键词： function agricultural land use peri-urban area

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Land tenure security,place satisfaction and loyalty in the peri-urban area of Ibadan City,Nigeria

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Regional Sustainability 2022年第4期3卷 346-355页

作者： Taiwo Oladapo BABALOLA Institute of Governance Humanitiesand Social SciencesPan African UniversityYaoundé06000Cameroon

Land tenure security is pertinent to achieving the sustainable development agenda in cities where land is needed and useful for development *** empirical research has been done to prove the importance of tenure security for investment,resilience,conservation,food security,as well as health and well-being,but it has not been clarified if and how land tenure security could adequately influence place loyalty and satisfaction with the residential environment,as it is clear that place loyalty and satisfaction are pertinent to inclusive *** the case of Ibadan City,the study examined how different dimensions of tenure security could determine residents’place loyalty and *** study employed a survey cross-sectional research design to distribute 514 structured questionnaires to household heads across 4 sampled peri-urban local government areas while 452 were retrieved for *** regression analysis model was employed to understand the association between tenure security dimensions and satisfaction(as model I)and loyalty(as model II).For model I,F=8.640,P=0.000,R=0.555,and R^(2)=0.308 were obtained;while for model II,F=9.157,P=0.001,R=0.415,and R^(2)=0.173 were *** thus means that residents’place loyalty and satisfaction can partly be explained by tenure *** particular,respondents with no eviction experience,recognized property rights,and invulnerable to eviction have higher odds of being satisfied and ***,we recommend protection,improvement,and upgrading of land tenure security as one of the means to promote place loyalty and satisfaction,which is essential to achieving inclusive and sustainable development.

关键词： Land tenure security Place satisfaction Place loyalty urban governance peri-urban area Sustainability African city

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Composition and Distribution of Mosquito Vectors in a peri-urban Community Surrounding an Institution of Learning in Lafia Metropolis,Nasarawa State,Central Nigeria

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Journal of Zoological Research 2022年第3期4卷 20-31页

作者： Ombugadu,A. Jibril,A.B. Mwansat,G.S. Njila,H.L. Attah,A.S. Pam,V.A. Benson,R.F. Maikenti,J.I. Deme,G.G. Echor,B.O. Ayim,J.O. Uzoigwe,N.R. Adejoh,V.A. Ahmed,H.O. Aimankhu,O.P. Da’an,S.A. Lapang,M.P. Kure,M.S. Samuel,M.D. Nkup,C.D. Department of Zoology Faculty of ScienceFederal University of LafiaLafiaNasarawa StateNigeria Department of Zoology Faculty of Natural SciencesUniversity of JosJosPlateau StateNigeria Department of Science Laboratory Technology Faculty of Natural SciencesUniversity of JosJosPlateau StateNigeria State Key Laboratory of Ecology and Conservation Institute of ZoologyChinese Academy of ScienceBeijing100101China A.P.Leventis Ornithological Research Institute University of Jos Biological ConservatoryP.O.Box 13404LamingaJos-EastPlateau StateNigeria Department of Natural Science Oswald Waller College of Education LifidiP.O.Box 39Shendam LGAPlateau StateNigeria Department of Biology School of Biological SciencesFederal University of TechnologyOwerriImo StateNigeria Department of Biology College of ArtsScience and TechnologyKurgwiQua’an Pan LGAPlateau StateNigeria

Vector surveillance is very key in solving mosquito-borne health problems in *** this end,the composition and distribution of mosquito vectors in a peri-urban community surrounding an institution of learning in Lafia metropolis,Nasarawa State,Central Nigeria was carried out between December 2016 and June *** Prokopack Aspirator was used to collect indoor resting mosquitoes between 6:00 *** 9:00 *** 30 randomly selected *** collected were knocked down and transferred into a well labelled petri-dish and taken to the laboratory for processing.A total of 664 mosquitoes were collected which spread across Culex quinquefasciatus 572(86.14%),Anopheles gambiae 88(13.25%)and Aedes aegypti 4(0.60%).The abundance of mosquitoes in relation to seasons,species,sex,abdominal conditions as well as transmission indices across seasons significantly varied(P0.05).The inhabitants of the area should ensure that all drainages flow through so as to reduce mosquito breeding ***,members of the community should always protect themselves by sleeping under insecticide treated bed nets.

关键词： Mosquitoes peri-urban area Institution Prokopack Aspirator House types Lafia

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peri-urban greenspace spatial pattern evolved in ecological response to locally mountainous context:A case study in TaiYuan District,Baoji city,China

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西部人居环境学刊 2016年第S1期 53-64页

作者： Zhong Xing Xizi Tang Faculty of Architecture and urban Planning Chongqing University

urban area is deeply influenced by conditions of the surrounding peri-urban greenspaces,which provides considerable insight into the spatial structure,functional performance,ecological quality and the potential planning of urban area as a ***,peri-urban area is suffering from the extensive engulftnent on the ramification of valuable *** topic would be unfolded in conjunction with the planning of a major portion of peri-urban area of Baoji city in China,and it specifically illustrates how to bring the recognition into planning practice in the following five major topics that are progressively built on symbiotic relationship:1) environmental degradation and the role of peri-urban greenspace on citywide level,2) integrated land-use pattern including built and unbuilt land,3) greenspaces pattern and improvement of hill-slope transitional ecosystem,4) recreation and urban development opportunity,and 5) urban agriculture and rural *** research highlights stewardship of all land and functioning land-use integrity of built and unbuilt land as a whole.

关键词： peri-urban area Greenspace pattern Mountainous context Integrated planning Ecological response

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城市化过程中半城市化地区社区人居环境特征研究

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地理 2012年第6期

作者：黄宁崔胜辉刘启明温晨陈晓梅

城市化过程中半城市化地区存在着城市化程度由低到高的农村社区、城乡过渡型社区以及居住小区等城市型社区，社区人居环境多样化、多变化。在城市化影响下，这些社区人居环境呈现一定的特征。以厦门市集美区为例，通过选取典型社区，分... 详细信息

城市化过程中半城市化地区存在着城市化程度由低到高的农村社区、城乡过渡型社区以及居住小区等城市型社区，社区人居环境多样化、多变化。在城市化影响下，这些社区人居环境呈现一定的特征。以厦门市集美区为例，通过选取典型社区，分析其景观格局特征，构建人居环境评价指标体系，对城市化过程中半城市化地区不同类型社区的人居环境特征进行了研究。结果表明：①从农村到城乡过渡型社区，建筑面积比例显著增加，道路面积比例变化不大，而林地和草地面积比例逐渐减少，景观格局逐渐变为景观类型较单一、以现代建筑为优势景观的状态，景观趋于破碎化，形状略趋复杂，城市居住小区各类景观面积比例则相对合理，但景观高度破碎化、形状较规则。②城市化过程中各类型社区人居环境质量均逐渐变好，城乡过渡型社区和农村尤为明显，城市居住小区质量明显高于过渡型社区与农村，且除城中村之外，从农村到城市居住小区社区城市化程度与人居环境质量呈正相关关系。③城市化总体上促进了社区人居环境质量的提高，但对社区人居环境各方面的作用具有不同的规律，对于环境质量、人文环境等方面具有一定的负面影响。

关键词：社区人居环境城市化半城市化地区社区类型厦门市集美区 community human settlements urbanization peri-urban area types of community Jimei District of Xiamen City

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