全文获取类型
收费全文 | 21062篇 |
免费 | 309篇 |
国内免费 | 346篇 |
专业分类
安全科学 | 684篇 |
废物处理 | 935篇 |
环保管理 | 2912篇 |
综合类 | 3504篇 |
基础理论 | 5249篇 |
环境理论 | 10篇 |
污染及防治 | 5686篇 |
评价与监测 | 1333篇 |
社会与环境 | 1258篇 |
灾害及防治 | 146篇 |
出版年
2023年 | 119篇 |
2022年 | 268篇 |
2021年 | 290篇 |
2020年 | 243篇 |
2019年 | 204篇 |
2018年 | 420篇 |
2017年 | 394篇 |
2016年 | 563篇 |
2015年 | 422篇 |
2014年 | 607篇 |
2013年 | 1684篇 |
2012年 | 805篇 |
2011年 | 1117篇 |
2010年 | 809篇 |
2009年 | 886篇 |
2008年 | 1016篇 |
2007年 | 1062篇 |
2006年 | 850篇 |
2005年 | 757篇 |
2004年 | 786篇 |
2003年 | 724篇 |
2002年 | 658篇 |
2001年 | 730篇 |
2000年 | 537篇 |
1999年 | 340篇 |
1998年 | 221篇 |
1997年 | 248篇 |
1996年 | 238篇 |
1995年 | 292篇 |
1994年 | 233篇 |
1993年 | 221篇 |
1992年 | 185篇 |
1991年 | 200篇 |
1990年 | 192篇 |
1989年 | 189篇 |
1988年 | 163篇 |
1987年 | 141篇 |
1986年 | 162篇 |
1985年 | 151篇 |
1984年 | 197篇 |
1983年 | 160篇 |
1982年 | 176篇 |
1981年 | 164篇 |
1980年 | 131篇 |
1979年 | 158篇 |
1978年 | 96篇 |
1977年 | 100篇 |
1975年 | 91篇 |
1974年 | 94篇 |
1972年 | 96篇 |
排序方式: 共有10000条查询结果,搜索用时 109 毫秒
1.
Petrov I. A. Shushpanov A. S. Golyukov A. S. Dvinskaya M. L. Kharuk V. I. 《Russian Journal of Ecology》2021,52(5):399-405
Russian Journal of Ecology - Climate change entails shifts in the ranges of woody plants along both latitudinal and altitudinal gradients in the boreal forest biome. In this study,... 相似文献
2.
Chinazaekpere Nwani Festus V. Bekun Bright A. Gyamfi Ekpeno L. Effiong Andrew A. Alola 《Natural resources forum》2023,47(2):155-176
Sustainable use of natural resources would entail ensuring that derived economic benefits today do not undermine the welfare of generations to come. On this basis, this study examines the nexus between natural resource rents and carbon dioxide (CO2) emissions disaggregated into production and consumption-based (i.e., trade-adjusted) CO2 emissions for a selected panel of 45 developing and transition economies over the period 1995–2017. The empirical model also incorporates the impacts of population, affluence, and energy intensity. The results show that affluence increases production-based CO2 emissions by 1.407%, with the EKC's predicted inverted U-shaped curve only explaining consumption-based CO2 emissions. Economic reliance on natural resource rents and energy intensification contribute 0.022% and 0.766%, respectively, to CO2 emissions embedded in territorial production inventories and 0.035% and 0.583%, respectively, to CO2 emissions embedded in consumption inventories. The bootstrap non-causality test shows that historical data on each variable has significant predictive power for future CO2 emissions from both sources. The historical information about natural resource rents has significant predictive power over the future levels of affluence and energy intensity. Clearly, the results show that the environmental impact of natural resource rents is stronger when CO2 emissions are adjusted for trade and varies among the countries, with Bangladesh, Guinea, India, Malaysia, Mexico, Nigeria, Pakistan, Saudi Arabia, Vietnam, and Zimbabwe among the most affected countries. Overall, this study provides motivation for policies to keep the use of natural resources within sustainable limits. 相似文献
3.
Assessment of aquatic macroinvertebrates is a critical component of many watershed monitoring programs and passive samplers are often used to collect long-term site data, especially in environments where active sampling is not possible. However, standard passive samplers can be expensive and lost in extreme conditions. We developed a sampler using plastic soda bottles (PSB) filled with river rock and compared its effectiveness with standard Hester-Dendy samplers in both lotic and lentic environments. Abundance, taxa richness, and macroinvertebrate composition showed no significant differences between sampler types in either habitat type. PSB samplers, which can be constructed for less than one dollar each, collected the same number of organisms and represented the same diversity as Hester-Dendy devices that cost around $38 each. In studies where funds are limited, PSB samplers appear to be suitable for passive monitoring. 相似文献
4.
Fedorov N. I. Martynenko V. B. Zhigunova S. N. Mikhailenko O. I. Shendel’ G. V. Naumova L. G. 《Russian Journal of Ecology》2021,52(2):118-125
Russian Journal of Ecology - Changes in the distribution of broadleaf tree species—Tilia cordata Mill., Quercus robur L., Acer platanoides L., and Ulmus glabra Huds.—in the central part... 相似文献
5.
Tominaga Flávio Kiyoshi Silva Thalita Tieko Boiani Nathalia Fonseca de Jesus Juliana Mendonça Silva Teixeira Antonio Carlos Silva Costa Borrely Sueli Ivone 《Environmental science and pollution research international》2021,28(19):23975-23983
Environmental Science and Pollution Research - Wastewater and effluent discharges are the main causes of receiving water body pollution and important challenges in water quality management. Among... 相似文献
6.
Zadubrovskiy P. A. Vasina A. V. Novikova E. V. Kondratyuk E. Yu. Matskalo L. L. Novikov E. A. 《Russian Journal of Ecology》2021,52(4):283-289
Russian Journal of Ecology - To test the hypothesis that animals from habitats exposed to high anthropogenic pressure are more successful in adapting to captivity, immature narrow-skulled voles... 相似文献
7.
El Rasafi Taoufik Pereira Ruth Pinto Glória Gonçalves Fernando J. M. Haddioui Abdelmajid Ksibi Mohamed Römbke Jörg Sousa José Paulo Marques Catarina R. 《Environmental science and pollution research international》2021,28(13):15782-15793
Environmental Science and Pollution Research - The contamination left by abandoned mines demands sustainable mitigation measures. Hence, the aim of this study was to examine the phytoremediator... 相似文献
8.
Joslin L. Moore Abbey E. Camaclang Alana L. Moore Cindy E. Hauser Michael C. Runge Victor Picheny Libby Rumpff 《Conservation biology》2021,35(5):1639-1649
Land managers decide how to allocate resources among multiple threats that can be addressed through multiple possible actions. Additionally, these actions vary in feasibility, effectiveness, and cost. We sought to provide a way to optimize resource allocation to address multiple threats when multiple management options are available, including mutually exclusive options. Formulating the decision as a combinatorial optimization problem, our framework takes as inputs the expected impact and cost of each threat for each action (including do nothing) and for each overall budget identifies the optimal action to take for each threat. We compared the optimal solution to an easy to calculate greedy algorithm approximation and a variety of plausible ranking schemes. We applied the framework to management of multiple introduced plant species in Australian alpine areas. We developed a model of invasion to predict the expected impact in 50 years for each species-action combination that accounted for each species’ current invasion state (absent, localized, widespread); arrival probability; spread rate; impact, if present, of each species; and management effectiveness of each species-action combination. We found that the recommended action for a threat changed with budget; there was no single optimal management action for each species; and considering more than one candidate action can substantially increase the management plan's overall efficiency. The approximate solution (solution ranked by marginal cost-effectiveness) performed well when the budget matched the cost of the prioritized actions, indicating that this approach would be effective if the budget was set as part of the prioritization process. The ranking schemes varied in performance, and achieving a close to optimal solution was not guaranteed. Global sensitivity analysis revealed a threat's expected impact and, to a lesser extent, management effectiveness were the most influential parameters, emphasizing the need to focus research and monitoring efforts on their quantification. 相似文献
9.
de Carvalho George Harrison Ferreira de Andrade Milene Aparecida de Araújo Carla Nunes Santos Maria Lucília de Castro Natália Alves Charneau Sébastien Monnerat Rose de Santana Jaime Martins Bastos Izabela Marques Dourado 《Environmental science and pollution research international》2019,26(6):5514-5523
Environmental Science and Pollution Research - Aedes aegypti and Culex quinquefasciatus are vectors of diseases that constitute public health problems. The discovery of products capable of... 相似文献
10.
Alves Andreia Cristina Fonseca Antero Romario Victor Pacheco de Oliveira Sergio Botelho Ojala Satu Anneli Scalize Paulo Sérgio 《Environmental science and pollution research international》2019,26(24):24850-24862
Environmental Science and Pollution Research - Bisphenol-A is widely used chemical in industry and unfortunately often detected in natural waters. Considered as an emerging pollutant, bisphenol-A... 相似文献