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1.
分析了盘锦市农村生活垃圾现状和存在问题,结合盘锦市实际情况及农村生活垃圾处理技术,提出了盘锦市农村生活垃圾处理对策. 相似文献
2.
Kennett SA 《Environmental management》2002,30(5):0595-0608
Biosphere greenhouse gas (GHG) management consists of preserving and enhancing terrestrial carbon pools and producing biomass
as a fossil fuel substitute. The discussion of this topic has focused primarily on carbon-accounting and project-level issues,
particularly relating to carbon sequestration as a source of emissions credits under the Kyoto Protocol. While international
consensus on these matters is needed, this paper argues that an important domestic policy agenda also deserves attention.
National policies for biosphere GHG management are necessary to bring about large-scale changes in land-use, forestry, and
agricultural practices and can address some of the technical and policy issues that have proven to be particularly problematic
from carbon-accounting and project-level perspectives. These policies should minimize land-use and resource-management conflicts,
account for collateral benefits, and ensure institutional compatibility with existing resource-management regimes. Issues
relating to project permanence, leakage, and transaction costs should also be addressed. A range of policy instruments should
be used and biosphere GHG management should be one component of an integrated approach to environmental and resource management.
Countries promoting biosphere GHG management as an important element of their climate change strategies should be developing
these domestic policies to complement international negotiations and to demonstrate that carbon sequestration and biomass
production can make an effective contribution to the stabilization of atmospheric GHG concentrations. 相似文献
3.
森林资源在生态系统的保护中有着多方面的功能,保护森林资源对于环境保护、经济发展和科学研究有着重要意义。我国森林资源破坏严重,其中重要原因之一就是有关森林资源保护法律中存在着许多不完善之处。本文指出我国《森林法》关于法律责任规定存在的问题,提出了违法砍伐林木者应当承担远期保护责任的立法建议。 相似文献
4.
Aysin Sev 《Sustainable Development》2009,17(3):161-173
The importance of the construction industry for the three elements of sustainable development, namely economic growth, social progress and effective protection of the environment, cannot be disregarded. This paper aims to evolve a conceptual framework for implementing sustainability principles and strategies to the construction industry from a life‐cycle perspective to contribute to sustainable development. The framework relies on three basic principles, which are resource management, life‐cycle design and design for human and environment. Following a literature review, each principle involving strategies and methods to be applied during the life cycle of construction projects is explained and a few case studies are presented for clarity on the methods. The framework, offering tools for stakeholders of the construction industry, also aims to help to develop the most appropriate assessment tool, which is based on the priorities of critical conditions. Copyright © 2008 John Wiley & Sons, Ltd and ERP Environment. 相似文献
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本文以四川部分林业土壤为例,应用多层次模糊综合评判法进行土壤资源的质量评价。采取聘请众多专家分级、打分的办法制定评价标准和确定评价因素权数。实施了专家系统与综合评判的联合运用技术,并探讨了提高土壤质量评级精度的“加细”评判问题。最后,通过比较多层次模糊综合评判法与传统法(评分法)的评价结果,指出前者具有更强的客观性和全面性。 相似文献
7.
《Sustainable Development》2017,25(4):299-310
Taking into account the importance of improving organizational environmental performance, the current study examines the drivers of workplace environmentally friendly behaviour (WEFB) of employees in a public organization. Multiple regression analysis with data from sample of 59 employees was used to test the proposed hypotheses. Results show that harmonious environmental passion of employees and organizational environmental support are significantly related to WEFB. Furthermore, our findings show that gender and perceived incomes also influence the workplace environmentally friendly behaviour of employees. The obtained findings may add knowledge to this field since previous investigations have paid little attention to the determinants of WEFB in the public sector. Besides, the findings have practical implications, suggesting that public organizations should demonstrate their environmental commitment to their employees. Providing employees with information to develop environmentally friendly behaviours at work could support those organizations interested in improving their environmental performance. Copyright © 2016 John Wiley & Sons, Ltd and ERP Environment 相似文献
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从尿液中回收农业所需的磷(P)、氮(N)等资源,有利于缓解当今我国面临的肥料生产量与矿产储量不平衡的问题。基于镁空气燃料电池(MAFC)原理的技术已经实现了从完全水解尿液中高效去除并回收P资源,但存在尿素资源浪费问题。尿液水解释放出的NH4+和OH-会引发水质改变,可能会对MAFC中P回收产生影响,且过度水解也不利于尿素资源化。考察了尿液水解率对MAFC体系中P回收性能的影响,揭示了尿液水解率对MAFC中含P沉淀物生成的影响机制,以期在尽可能保留尿素的同时,实现P的高效去除与回收。结果表明:水解率为10%的尿液可满足鸟粪石沉淀所需的NH4+与适宜的pH环境。对不同水解率尿液反应60 min后收集的沉淀的表征结果表明:不同水解率尿液的沉淀组成具有显著差异。通过对10%水解尿液体系中所回收沉淀物进行分析,发现其反应40 min后收集的沉淀物中鸟粪石质量分数可达96%。研究结果可为通过控制尿液水解率回收高品质含磷缓释肥提供参考。 相似文献
10.
利用南京市气溶胶激光雷达网和草场门超级站监测数据,对2022年3月2—3日南京地区一次沙尘污染过程的垂直特征和地面PM2.5组分变化进行了分析。结果表明,草场门、八卦洲和土桥3处点位的气溶胶激光雷达均观测到消光系数和退偏振比在凌晨至清晨时段有垂直分层现象,说明高空输入的沙尘气团位于城市污染气团上空,而此时地面PM2.5组分以二次无机盐(硝酸盐、硫酸盐和铵盐)为主。中午前后,各高度的退偏振比及消光系数发生突变,主要是由高空输入沙尘和城市污染气团的垂直混合引起的。随着日间大气垂直交换的加大,PM2.5中地壳物质的浓度均值和占比显著上升,其中浓度从3 μg/m3升高至5 μg/m3,占比从3%上升至10%。 相似文献