全文获取类型
收费全文 | 115篇 |
免费 | 15篇 |
国内免费 | 8篇 |
专业分类
安全科学 | 18篇 |
废物处理 | 2篇 |
环保管理 | 25篇 |
综合类 | 38篇 |
基础理论 | 30篇 |
环境理论 | 1篇 |
污染及防治 | 4篇 |
评价与监测 | 5篇 |
社会与环境 | 13篇 |
灾害及防治 | 2篇 |
出版年
2023年 | 2篇 |
2022年 | 5篇 |
2021年 | 4篇 |
2020年 | 4篇 |
2019年 | 7篇 |
2018年 | 1篇 |
2017年 | 9篇 |
2016年 | 6篇 |
2015年 | 4篇 |
2014年 | 2篇 |
2013年 | 11篇 |
2012年 | 10篇 |
2011年 | 8篇 |
2010年 | 5篇 |
2009年 | 5篇 |
2008年 | 4篇 |
2007年 | 6篇 |
2006年 | 3篇 |
2005年 | 12篇 |
2004年 | 7篇 |
2003年 | 3篇 |
2002年 | 4篇 |
2001年 | 2篇 |
2000年 | 5篇 |
1999年 | 1篇 |
1998年 | 1篇 |
1996年 | 2篇 |
1995年 | 2篇 |
1991年 | 1篇 |
1977年 | 1篇 |
1971年 | 1篇 |
排序方式: 共有138条查询结果,搜索用时 15 毫秒
71.
72.
Raden Ajeng Koesoemo Roekmi Kanagaratnam Baskaran Lloyd HC Chua 《Natural resources forum》2018,42(2):108-122
Community‐based water supply (CBWS) is an example of how a community manages common pool resources (CPR). This results in an alternative approach to solve water supply problems in developing countries by enhancing community participation in managing water supply. This research evaluates the sustainability of five CBWS projects in Cikarang, Indonesia by using Ostrom's design principles, with additional sustainability factors found in the Sustainable Development Goal (SDG) on drinking water and groundwater sustainability. Quinn et al. (2007) criteria were used in the analysis, and the results show that the management of four CBWS institutions were absent and one CBWS institution was weak. With regards to the SDG's drinking water target, the CBWS institutions were unable to comply with safe water standards, and in terms of groundwater sustainability, efforts to monitor and sustain groundwater tables were absent. Results from this research suggest that more focus must be placed on water quality and groundwater sustainability for CBWS projects. 相似文献
73.
Ali Azizi Amineh Ghorbani Bahram Malekmohammadi Hamid Reza Jafari 《Journal of Environmental Planning and Management》2017,60(10):1785-1808
Although mismanagement of groundwater resources has resulted in their destruction over centuries, climate change is speeding up this process more than ever. On the one hand, urgent action by government bodies is needed to address the challenge. On the other hand, a vast body of literature proves that bottom-up collective action, although requiring a longer time period, is a better solution to manage such resources. This research aims to address this dilemma. The groundwater resource in Ardabil plain in Iran, which has long been managed solely through government intervention, has been chosen as a case study to explore the opportunities and limitations of managing a critically endangered area from a common pool resource perspective. Our study suggests that managing Ardabil groundwater resources should be conducted on two scales. The bottom-up institutional agreements should take place at village scale while the government should stay in charge of the overall organization at plain scale. 相似文献
74.
75.
76.
以上海市嘉定区污染源在线监测为例,对污染源自动监测运行中常见的仪器运行稳定性差,监测数据准确度低,故障修复不及时等问题进行分析,从管理、技术、沟通三个方面提出对策和建议。 相似文献
77.
浅析环境权的法理基础 总被引:3,自引:0,他引:3
胡通碧 《中国人口.资源与环境》2002,12(4):32-34
环境权正在从应有权利走向实在权利,本文分析了环境权的法理基础存在的原因,指出环境权法理基础就是生存、自由、平等、可持续发展、共存。 相似文献
78.
作为应急管理中的主要工作内容,应急决策在整个应急管理工作中具有战略意义,为了对危机情境下的应急决策主体进行聚类分析,定量计算不同决策主体之间相应决策文本的区别。借鉴最长公共子序列模型(LCS)的原理,从决策文本中提取主题词,根据决策文本的特点将其分为“目标”和“行动”2级,结合样本总体确定替换矩阵、空位罚分规则和目标函数,构建高层应急决策文本相似性比对分析模型;运用Needleman Wunsch算法对该模型进行求解;通过对得到的地震情景下的高层应急决策文本的分析,证明模型的有效性和可行性;为了避免序列长度差过大对聚类分析的结果影响,在此基础上提出相对相似性得分的概念,并通过与VSM算法得到的结果进行比较,证明该模型在应急决策文本相似性分析中的优越性。 相似文献
79.
共因失效可能使系统的可靠性大大降低,是系统可靠性分析中的重点和难点。GO法可以对含共因失效的系统进行可靠性分析。为了选取已有算法合适的参数,更为了提高有多个共因失效组系统的GO法可靠性分析效率,进行了相关研究。对关键参数公式进行了理论分析,并就几个算例系统进行了计算试验;对已有算法进行了深入研究,为了改进已有算法对共因失效组逐个处理,提出了将共因失效组中的部件均由本组等效共因失效部件代替的新算法。进而,应用分组法和新算法对一个简单示例系统和外电源备用系统进行了共因失效分析。给出了对已有算法参数选取的建议;通过对比可知分组法与新算法计算结果相近。通过对已有算法参数的合理化选取,可以提高计算结果的准确度;新算法可对所有共因失效组一次性处理,是共因失效分析的有效方法。 相似文献
80.
ABSTRACT: Access to clean and sufficient amounts of water is a critical problem in many countries. A watershed approach is vital in understanding pollution pathways affecting water resources and in developing participatory solutions. Such integration of information with participatory approaches can lead to more sustainable solutions than traditional “crisis‐to‐crisis” management approaches. This study aims at applying a watershed based joint action approach to manage water resources. Since most watersheds have urban and rural sources of pollution and a wide disparity in access to and use of water, alternative solutions need to take an integrated approach through cooperative actions. An institutional model was applied to seven subwatersheds in Honduras to evaluate various sources and effects of water contamination and water shortages. Two specific pathways of water resources degradation were studied (contamination from coffee pulp manufacturing and urban nonpoint sources) to develop alternative solutions that mitigate downstream impacts of access to clean water. A locally driven joint mechanism to reuse coffee pulp in farming systems is proposed. Such an institutional solution can maximize benefits to both farms and the coffee pulp industry. A combination of education and investment in sanitary facilities in urbanizing areas is proposed to minimize urban sources of water contamination. 相似文献