全文获取类型
| 收费全文 | 4130篇 |
| 免费 | 1079篇 |
| 国内免费 | 354篇 |
专业分类
| 安全科学 | 215篇 |
| 废物处理 | 215篇 |
| 环保管理 | 327篇 |
| 综合类 | 1903篇 |
| 基础理论 | 810篇 |
| 环境理论 | 1篇 |
| 污染及防治 | 1660篇 |
| 评价与监测 | 147篇 |
| 社会与环境 | 124篇 |
| 灾害及防治 | 161篇 |
出版年
| 2025年 | 2篇 |
| 2024年 | 37篇 |
| 2023年 | 99篇 |
| 2022年 | 209篇 |
| 2021年 | 132篇 |
| 2020年 | 107篇 |
| 2019年 | 99篇 |
| 2018年 | 148篇 |
| 2017年 | 163篇 |
| 2016年 | 222篇 |
| 2015年 | 264篇 |
| 2014年 | 312篇 |
| 2013年 | 368篇 |
| 2012年 | 329篇 |
| 2011年 | 305篇 |
| 2010年 | 233篇 |
| 2009年 | 271篇 |
| 2008年 | 265篇 |
| 2007年 | 222篇 |
| 2006年 | 210篇 |
| 2005年 | 152篇 |
| 2004年 | 116篇 |
| 2003年 | 144篇 |
| 2002年 | 129篇 |
| 2001年 | 111篇 |
| 2000年 | 120篇 |
| 1999年 | 132篇 |
| 1998年 | 143篇 |
| 1997年 | 84篇 |
| 1996年 | 77篇 |
| 1995年 | 74篇 |
| 1994年 | 60篇 |
| 1993年 | 55篇 |
| 1992年 | 48篇 |
| 1991年 | 19篇 |
| 1990年 | 20篇 |
| 1989年 | 18篇 |
| 1988年 | 16篇 |
| 1987年 | 13篇 |
| 1986年 | 11篇 |
| 1985年 | 2篇 |
| 1984年 | 2篇 |
| 1983年 | 2篇 |
| 1982年 | 2篇 |
| 1981年 | 7篇 |
| 1979年 | 2篇 |
| 1977年 | 2篇 |
| 1974年 | 1篇 |
| 1972年 | 1篇 |
| 1971年 | 2篇 |
排序方式： 共有5563条查询结果，搜索用时 0 毫秒
111.
Environmental quality in urban areas has become an increasingly important topic in Taiwan. Previous research involving the interrelationshipsbetween urban development and environmental quality have rarely emphasized the symbiosis between urban areas and the natural environment. In recent years, the discipline of ecological economics has applied ecological energetic analysis to evaluate the contribution of the natural environment to an urban system. In addition, system simulation also plays a prominent role in assessing the dynamic interrelations between humans, economics and ecological systems. On the basis of an ecological economics perspective, this paper establishes indices of environmental quality and develops an ecological system model to simulate the interrelationshipsbetween urban developmentand environmentalquality of the Taipei metropolitan region. Furthermore, this paper not only proposes future development alternatives and strategies, but also initiates scenarios of the Taipei metropolitan region for policy simulation. According to those results, future development in the Taipei metropolitan region should adjust the interface and mechanism between man and nature for sustainable development. 相似文献
112.
清代在水土资源、林木资源、矿产资源的保护与利用等方面采取了积极有效的措施,包括开垦土地、兴修水利、发展生态农业、植树造林、加强法制、设立环保机构等。 相似文献
113.
Huang Shida 《四川环境》1999,18(3):3
本文通过对成都市府南河及都江堰灌溉系统的水资源利用现状分析,结合我国有关环保法规、水污染防治对策及工程实例,提出了城乡结合,把府南河建设成为既是城市水景又是农灌水库的建议,为解决成都市府南河水质污染与水量不足问题提出了一条新的途径。 相似文献
114.
沪宁杭成长三角及其旅游业的发展 总被引：10，自引：0，他引：10
本文运用成长三角理论,从旅游经济发展的角度提出了建立沪宁杭成长三角的构想,分析了其旅游发展的意义,并就沪宁杭旅游业的联合发展战略进行了探讨 相似文献
115.
Y.P. Li G.H. Huang H.Z. Li J. Liu 《Journal of the American Water Resources Association》2014,50(5):1191-1207
In this study, a recourse‐based interval fuzzy programming (RIFP) model is developed for tackling uncertainties expressed as fuzzy, interval, and/or probabilistic forms in an effluent trading program. It can incorporate preregulated water‐pollution control policies directly into its optimization process, such that an effective linkage between environmental regulations and economic implications (i.e., penalties) caused by improper policies due to uncertainty existence can be provided. The RIFP model is applied to point‐nonpoint source effluent trading of the Xiangxi River in China. The efficiency of trading efforts between water quality improvement and net system benefit under different degrees of satisfying discharge limits is analyzed. The results are able to help support (1) formulation of water‐pollution control strategies under various economic objectives and system‐reliability constraints, (2) selection of the desired effluent trading pattern for point and nonpoint sources, and (3) generation of tradeoffs among system benefit, satisfaction degree, and pollutant mitigation under multiple uncertainties. Compared with the traditional regulatory approaches, the results demonstrate that the water‐pollution control program can be performed more cost‐effectively through trading than nontrading. 相似文献
116.
117.
This paper examines whether foreign aid, together with other economic, social and environmental factors, contributes to sustainable development. It starts with an illustrative theoretical growth model where foreign aid promotes sustainable development by protecting the environment. Using factor analysis and newly developed estimation methods for a dynamic panel data model with endogenous regressors, the empirical section of the paper finds evidence that foreign aid has had a significantly positive influence on sustainable development in aid recipient countries. This effect is very likely to go through channels related to growth and resources as well as a technology channel with respect to energy intensity. This research has important implications for a post‐2015 development framework on international collective action with regard to a sustainable future. 相似文献
118.
Shamsiya Kudratova Xiaoxia Huang Khikmatullo Kudratov Shohrukh Qudratov 《Corporate Social Responsibility and Environmental Management》2020,27(2):815-824
This study presents a new optimization model for quantitative sustainability measurement in net present value estimation process of corporate investments. Proposed model presents an innovative perspective for the transformation of the logic behind traditional investment project selection practices to the sustainable project selection in corporations. By using the proposed model, it is possible that investors' can find positive sustainability trade‐offs without harming returns on investment. A case study is presented to illustrate the applicability of the proposed model in project selection decision‐making processes. Expected net present value is employed to calculate the return of the project investment for project selection decision‐stage. In order to identify stakeholder value trade‐off gaps, proposed model with sustainability involvement is evaluated in contrast to the traditional net value method estimations of the model. Based on optimization results, comparative analysis of proposed sustainability cost involvement in net present value estimation with traditional net present value estimation in project selection practices restore positive trade‐offs verifying the efficiency of proposed methodology. 相似文献
119.
120.