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Huo Xiaoni Li Hong Sun Danfeng Zhou Liandi Li Baoguo 《Environmental monitoring and assessment》2010,164(1-4):605-616
To effectively investigate the spatial variability of heavy metals in soil, produce a higher quality spatial distribution map, and identify the potential pollution sources of heavy metals, geostatistics was employed to evaluate the effect of scale on spatial variability of heavy metals in Beijing agricultural soils. The results revealed that spatial variability of Cr, Ni, Zn, and Hg was dependent on scale. Validation of the optimality of theoretical semivariance and comparative analysis of the estimation accuracy demonstrated that the multi-scale nested model can reveal the spatial structure of heavy metals effectively and improve the estimation accuracy better than the single-scale method, thereby enabling production a higher quality spatial interpolation map. Thus, the multi-scale kriging nested model is a useful tool for revealing spatial variability of heavy metals in soils, while the spatial distribution maps allow the identification of hot spots with high concentrations of heavy metals. 相似文献
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Pollutant emissions,energy consumption and economic development in China:Evidence from dynamic panel data 总被引:1,自引:0,他引:1
This study investigates the relationship among pollutant emissions,energy consumption and economic development in China during the period 1982-2007 by using a one-step GMM-system model under a multivariable panel VAR framework,controlling for capital stock and labor force.Regarding the data for all 28 provinces as a whole,we find that there is a unidirectional positive relationship running from pollutant emission to economic development and a unidirectional negative relationship between pollutant emission and energy consumption.Based on traditional economic planning,the panel data of28 provinces are divided into two cross-province groups.It is discovered that in the eastern coastal region of China,there is only a unidirectional positive causal relationship leading from economic development to pollutant emission;while in the central and western regions,there are the unidirectional Granger causal relationships between pollutant emission and energy consumption,as well as between pollutant emission and economic development.There is also a unique unidirectional causal relationship running from economic development to energy consumption,which does not appear in the eastem coastal region or in China as a whole. 相似文献
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为了提高企业环保成本控制效果,在绿色会计理论下对企业环保成本控制进行了深入的探讨。中国企业存在环保成本控制理念缺失、环保成本控制体系不健全、环保成本控制网络信息系统不完善以及企业环保成本核算准则缺乏等问题,通过低碳经济下实施绿色会计的方式顺应社会经济可持续发展的必然趋势,可促进企业重视环境与社会决策,承担起相应的社会责任,降低企业控制成本。 相似文献
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2015—2017年天水市大气污染物变化特征及来源分析 总被引:1,自引:0,他引:1
据天水市2015-2017年大气污染物(SO2、NO2、CO、O3、PM2.5和PM10)的监测数据及气象资料,分析了天水市大气污染物的浓度变化特征,并利用排放源清单和HYSPLIT模型对污染物来源进行了解析.结果表明:①天水市空气质量有所下降,总体优良率达84.9%.SO2、NO2、CO均达标,污染物以颗粒物和O3为主.②一次污染物SO2、NO2、CO、PM2.5和PM10浓度具有相似的季节变化和日变化特征,冬季最高,夏季最低,日变化呈早晚双峰型.二次污染物O3夏季浓度最高,冬季最低,日变化呈单峰型.③天水市空气质量主要受污染物的本地排放和外来输送的影响,本地民用和工业部门对SO2、CO、PM2.5和PM10的贡献最大,交通和工业部门对NOx的分担率最高,民用部门是CO的最大排放源;西北和东部气流是污染物外来的最主要输送路径.此外,污染物在城市大气中的稀释、扩散和转移也受当地气象因素(气温、降水、风向等)的影响. 相似文献
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Jiaheng Teng Ying Deng Xiaoni Zhou Wenfa Yang Zhengyi Huang Hanmin Zhang Meijia Zhang Hongjun Lin 《Frontiers of Environmental Science & Engineering》2023,17(10):129
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Yang Jianfeng Duan Yumin Yang Xiaoni Awasthi Mukesh Kumar Li Huike Zhang Linsen 《Environmental science and pollution research international》2020,27(35):43439-43451
Environmental Science and Pollution Research - The eddy covariance (EC) technique was used to measure variations of orchard-atmosphere CO2 exchange, as a function of meteorological variables in an... 相似文献
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北京耕作土壤重金属含量的空间自相关分析 总被引:24,自引:1,他引:24
以北京市耕作土壤中重金属元素为例,采用Moran's I统计量研究了土壤重金属含量的空间自相关关系、空间相关尺度以及空间分布规律.结果表明:北京市耕作土壤中8种重金属含量均存在空间自相关性.Cr、Ni、Zn、Hg、Cu、Pb、As、Cd的空间自相关尺度分别为57、75、57、55、55、65、74、37km.以cr和Hg为例,用区域空间自相关指标结合Moran散点图分析了重金属含量空间聚集区和空间孤立区在研究区内的分布规律.其中"高-高"空间聚集和"低-高"空间孤立区域存在潜在的污染风险,对土壤重金属环境质量评价和重金属污染防治有着重要的作用. 相似文献
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Abdi Yaghoub Li Xiaoni Cmara-Turull Xavier 《Environment, Development and Sustainability》2022,24(4):5052-5079
Environment, Development and Sustainability - This study aims at exploring the impact of ESG scores on the value and FP of firms in the airline industry. The potential moderating role of firm size... 相似文献
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