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251.
Impact of dicyandiamide on emissions of nitrous oxide, nitric oxide and ammonia from agricultural field in the North China Plain 总被引:1,自引:0,他引:1
Nitrous oxide(N_2O), nitric oxide(NO) and ammonia(NH_3) emissions from an agricultural field in the North China Plain were compared for three treatments during a whole maize growing period from 26 June to 11 October, 2012. Compared with the control treatment(without fertilization, designated as CK), remarkable pulse emissions of N_2O, NO and NH_3 were observed from the normal fertilization treatment(designated as NP) just after fertilization, whereas only N_2O and NH_3 pulse emissions were evident from the nitrification inhibitor treatment(designated as ND). The reduction proportions of N_2O and NO emissions from the ND treatment compared to those from the NP treatment during the whole maize growing period were 31% and 100%, respectively. A measurable increase of NH_3 emission from the ND treatment was found with a cumulative NH_3 emission of 3.8 ± 1.2 kg N/ha,which was 1.4 times greater than that from the NP treatment(2.7 ± 0.7 kg N/ha). 相似文献
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Chen Jianbiao Xu Wenhao Zhu Lin Xu Fang Mu Lin Wang Yinfeng Zhu Yuezhao 《Journal of Material Cycles and Waste Management》2021,23(4):1466-1478
Journal of Material Cycles and Waste Management - This paper concerned the thermal conversion characteristics, kinetics, thermodynamics, and incineration operation parameters and gas emissions of... 相似文献
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论述了对安全生产工作不能有丝毫麻痹思想,麻痹本身就是事故隐患,并以麻痹酿成事故的生动实例告诫人们麻痹是安全的大敌。 相似文献
257.
Mu Lan Liu Yuhong Wang Chencheng Qu Xiaojuan Yu Yaochuang 《Environmental science and pollution research international》2021,28(22):27614-27628
Environmental Science and Pollution Research - Capacity development has been regarded as one of many measures to empower the abilities of nations to adapt to a changing climate. Promoting public... 相似文献
258.
Wang Xing Wang Bin Xiao Lili Cui Xiuqing Cen Xingzu Yang Shijie Mu Ge Xu Tao Zhou Min Chen Weihong 《Environmental science and pollution research international》2021,28(22):27555-27564
Environmental Science and Pollution Research - Atmospheric PM2.5-bound metals have been widely addressed, but research on the exposure levels and sources of personal PM2.5-bound metals among urban... 相似文献
259.
使用生态水泥、再生骨料制备再生混凝土.分别通过快速浸出实验和长期连续浸出实验对混凝土中的重金属进行浸取,并采用原子吸收光谱法检测浸出溶液中的重金属含量,对比研究再生混凝土与普通混凝土重金属浸出性能差异.研究发现,快速浸出实验条件下,再生混凝土浸出液各重金属浸出浓度高于普通混凝土浸出浓度,但仍低于《危险废物鉴别标准浸出毒性鉴别》(GB5085.3-2007)标准规定的限值.快速浸出实验条件下重金属浸出量与重金属总量相关性不显著,说明快速实验方法有局限性.长期连续浸出实验结果表明,再生混凝土各重金属元素的扩散系数高于普通混凝土(除Zn外),这是由再生混凝土独特的显微结构引起的. 相似文献
260.
Cristian Parker Mario Letelier Juan Muñoz 《Environment, Development and Sustainability》2013,15(5):1337-1363
Faced with global climate change, local elites are confronted with the main dilemma of a developing country: development requires economic growth, but this effort also requires consideration of environmental factors and sustainable patterns of production and consumption. Based on empirical evidence from qualitative research on businesses and political elites in Chile—a paradigmatic South American middle-income country—this paper explores the extent to which local elites are aware of the severity of challenges posed by global climate change and identify main climate change concerns in their discourse. The degree to which domestic elites are aware of the paradigm shift they must assume toward clean industrial production is a key issue of environmental governance that involves private non-governmental actors. This paper gives clues to a better understanding of what is happening with strategic actors in developing nations and their understanding of their decision-making capacity concerning environmental policy and investments for facing global climate change. The main conclusion of the research is that awareness of climate change in local elites’ discourse is relative. It is not accompanied by a full acceptance of their agency and is not leading to a paradigm shift toward a clean model of development because of domestic elites’ position within globalization processes. 相似文献