全文获取类型
收费全文 | 46518篇 |
免费 | 487篇 |
国内免费 | 612篇 |
专业分类
安全科学 | 1322篇 |
废物处理 | 2225篇 |
环保管理 | 5590篇 |
综合类 | 7379篇 |
基础理论 | 12123篇 |
环境理论 | 26篇 |
污染及防治 | 12364篇 |
评价与监测 | 3450篇 |
社会与环境 | 2851篇 |
灾害及防治 | 287篇 |
出版年
2023年 | 222篇 |
2022年 | 514篇 |
2021年 | 539篇 |
2020年 | 373篇 |
2019年 | 434篇 |
2018年 | 797篇 |
2017年 | 792篇 |
2016年 | 1228篇 |
2015年 | 869篇 |
2014年 | 1383篇 |
2013年 | 3837篇 |
2012年 | 1661篇 |
2011年 | 2150篇 |
2010年 | 1799篇 |
2009年 | 1794篇 |
2008年 | 2155篇 |
2007年 | 2223篇 |
2006年 | 1954篇 |
2005年 | 1595篇 |
2004年 | 1530篇 |
2003年 | 1610篇 |
2002年 | 1442篇 |
2001年 | 1845篇 |
2000年 | 1257篇 |
1999年 | 786篇 |
1998年 | 546篇 |
1997年 | 540篇 |
1996年 | 552篇 |
1995年 | 627篇 |
1994年 | 622篇 |
1993年 | 521篇 |
1992年 | 522篇 |
1991年 | 496篇 |
1990年 | 533篇 |
1989年 | 497篇 |
1988年 | 444篇 |
1987年 | 398篇 |
1986年 | 321篇 |
1985年 | 352篇 |
1984年 | 389篇 |
1983年 | 373篇 |
1982年 | 391篇 |
1981年 | 326篇 |
1980年 | 273篇 |
1979年 | 311篇 |
1978年 | 271篇 |
1977年 | 207篇 |
1976年 | 192篇 |
1975年 | 203篇 |
1974年 | 188篇 |
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
1.
Petrash Daniel A. Novák Martin Bohdálková Leona Krachler Micheal Čuřík Jan Veselovský František Štěpánová Markéta Umbría-Salinas Karelys Přechová Eva Komárek Arnost 《Environmental science and pollution research international》2021,28(13):16107-16121
Environmental Science and Pollution Research - Arsenic (As) concentrations and deposition fluxes were measured in snow and rime at 10 mountain-top sites near the borders between the Czech Republic... 相似文献
2.
Janiga Martin Janiga Marián Haas Martina 《Environmental science and pollution research international》2021,28(37):51297-51305
Environmental Science and Pollution Research - Flash floods represent a serious threat to wildlife, water biota, and human life in pre-alpine regions, particularly in recent historical memory. The... 相似文献
3.
Tabriz S. S. Kader M. A. Rokonuzzaman M. Hossen M. S. Awal M. A. 《Environment, Development and Sustainability》2021,23(11):15667-15694
Environment, Development and Sustainability - Sugarcane is an industrial crop globally used for producing biofuels and bioproducts and is the only source of white sugar in Bangladesh. However,... 相似文献
4.
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
5.
Shaaban Nashwa A. El-Rayis Osman A. Aboeleneen Marwa S. 《Environmental science and pollution research international》2021,28(16):19742-19754
Environmental Science and Pollution Research - Lake Mariut Main Basin (MB) is not only one of the three basins composing Lake Mariut (LM) but is also the main source of the popular tilapia fish to... 相似文献
6.
Madboli Abd El-Nasser A. Seif Mohamed M. 《Environmental science and pollution research international》2021,28(14):17613-17626
Environmental Science and Pollution Research - The aim of this study is to describe the existence of the inflammatory marker nuclear factor kappa light chain B lymphocyte protein (NF-?B P65)... 相似文献
7.
The Science of Nature - We present the first study that compares phenological variation in parasite load and inflammatory response in a lizard with asynchronous male and female gonadal cycles.... 相似文献
8.
Rudra P. Pradhan Mahendhiran S. Nair Mak B. Arvin John H. Hall 《Natural resources forum》2023,47(3):435-483
This article postulates strong endogenous relationships in lower income countries between institutional quality, financial development and sustained economic growth. These associations were investigated using the vector-error correction model (VECM) and Granger causality method for a sample of 79 countries from 2005 to 2022. The findings show that (1) these variables reinforce each other in the short run. (2) In the long run, both institutional quality and financial development can fuel economic growth. (3) The positive effect of institutional quality on economic growth is greater than that of financial development. Policy implications of these findings are that careful attention should be paid to co-development policies to enhance the institutional quality and the financial system in these economies. Policies should also consider economic growth strategies to enable sustainable economic growth rates. 相似文献
9.
Artisanal and small-scale gold mining (ASGM) is the principal anthropogenic activity that globally contributes to overloading our environment with mercury. Although the Minamata Convention, led by the United Nations, is a crucial instrument to eliminate its use progressively, novel approaches to accelerate this difficult transition are welcome. This article proposes a framework for policy-making or improvement, fostering the enforcement of mercury elimination through the lens of the 17 Sustainable Development Goals (SDGs), focusing on the excluded artisanal and small-scale gold miners and their dependents. We move forward with a literature review of the Artisanal and Small Mining topic, taking each SDG as a unit of analysis. Understanding the problem as a puzzle of four sets of pieces, namely: (1) social, (2) environmental, (3) economic, and (4) institutional, the paper offers potential opportunities for the decision-makers and practitioners to accelerate the substitution of this heavy metal and develop sustainable futures for the ASGM communities. We conclude by proposing a pragmatic framework that synthesizes the means, actions, and ends to accelerate a sustainable transition. 相似文献
10.
Peiman Parisouj Hadi Mohammadzadeh Khani Md Feroz Islam Changhyun Jun Sayed M. Bateni Dongkyun Kim 《Journal of the American Water Resources Association》2023,59(2):299-316
Data-driven techniques are used extensively for hydrologic time-series prediction. We created various data-driven models (DDMs) based on machine learning: long short-term memory (LSTM), support vector regression (SVR), extreme learning machines, and an artificial neural network with backpropagation, to define the optimal approach to predicting streamflow time series in the Carson River (California, USA) and Montmorency (Canada) catchments. The moderate resolution imaging spectroradiometer (MODIS) snow-coverage dataset was applied to improve the streamflow estimate. In addition to the DDMs, the conceptual snowmelt runoff model was applied to simulate and forecast daily streamflow. The four main predictor variables, namely snow-coverage (S-C), precipitation (P), maximum temperature (Tmax), and minimum temperature (Tmin), and their corresponding values for each river basin, were obtained from National Climatic Data Center and National Snow and Ice Data Center to develop the model. The most relevant predictor variable was chosen using the support vector machine-recursive feature elimination feature selection approach. The results show that incorporating the MODIS snow-coverage dataset improves the models' prediction accuracies in the snowmelt-dominated basin. SVR and LSTM exhibited the best performances (root mean square error = 8.63 and 9.80) using monthly and daily snowmelt time series, respectively. In summary, machine learning is a reliable method to forecast runoff as it can be employed in global climate forecasts that require high-volume data processing. 相似文献