全文获取类型
收费全文 | 346篇 |
免费 | 3篇 |
国内免费 | 2篇 |
专业分类
安全科学 | 13篇 |
废物处理 | 10篇 |
环保管理 | 37篇 |
综合类 | 20篇 |
基础理论 | 76篇 |
污染及防治 | 119篇 |
评价与监测 | 51篇 |
社会与环境 | 25篇 |
出版年
2023年 | 7篇 |
2022年 | 15篇 |
2021年 | 16篇 |
2020年 | 7篇 |
2019年 | 8篇 |
2018年 | 18篇 |
2017年 | 11篇 |
2016年 | 35篇 |
2015年 | 15篇 |
2014年 | 27篇 |
2013年 | 31篇 |
2012年 | 19篇 |
2011年 | 27篇 |
2010年 | 17篇 |
2009年 | 9篇 |
2008年 | 18篇 |
2007年 | 18篇 |
2006年 | 10篇 |
2005年 | 6篇 |
2004年 | 4篇 |
2003年 | 4篇 |
2002年 | 3篇 |
2001年 | 5篇 |
2000年 | 3篇 |
1999年 | 3篇 |
1997年 | 1篇 |
1996年 | 1篇 |
1995年 | 1篇 |
1994年 | 3篇 |
1993年 | 2篇 |
1991年 | 2篇 |
1990年 | 1篇 |
1979年 | 2篇 |
1976年 | 1篇 |
1966年 | 1篇 |
排序方式: 共有351条查询结果,搜索用时 31 毫秒
221.
Eduardo Molina Tomás Enrique León Dolors Armenteras 《Environmental geochemistry and health》2014,36(1):117-129
Salt licks are key places for the ecological dynamics of wildlife communities around the world and are locations where animals develop geophagical behaviours. Geophagy is a method for animals to supplement their diets or facilitate their digestive processes and is related to the health of individuals and populations. This study characterises a series of salt licks located in the Colombian Amazon foothills and describes their structural, mineralogical and physicochemical properties, as well as the fauna that visit these locations. The results are analysed in reference to the geological characteristics of the study area and in relation to the role of the salt lick in the nutritional ecology of the Amazonian fauna. Located in the study area are two types of salt licks that are significantly different in composition. These salt licks are located in an area where young geological materials have been exposed. The characteristics of the salt licks supports the hypothesis that they are used to solve nutritional problems that result from herbivorous diets. The clear importance of salt licks in the ecology of several Amazonian animal species emphasises the need to prioritise conservation areas by maximising the complementarities of salt lick sites. 相似文献
222.
223.
224.
225.
Ana Paula Madeira Di Beneditto Cristina Maria Magalhães de Souza Helena Amaral Kehrig Carlos Eduardo Rezende 《Marine Biology》2011,158(10):2209-2217
The feeding preferences of the coastal dolphins Pontoporia blainvillei and Sotalia guianensis in south-eastern Brazil (21o18′S–22o25′S) were assessed through the prey’s index of relative importance (IRI), total mercury
concentration (Hgtot), and stable isotopic (δ15N and δ13C) to compare their efficiency in the discrimination of prey contribution to the predators’ diet. The IRI was the best tool
to describe the dolphins’ preference, while Hgtot and δ15N seemed to be efficient as a trophic marker when the diet is made up of prey of varying sizes, as observed in S. guianensis. Both dolphins presented lighter δ15N than their prey species, which is an unusual pattern. However, as the sample size to isotope ratios analysis was small,
especially to the dolphins, the results should be considered with caution, and further studies are necessary to corroborate
these findings. The δ13C values characterized a typical coastal food chain, confirming the preferential area of these species. 相似文献
226.
Eduardo V. V. Varej?o Carlos R. Bellato Maur��cio P. F. Fontes Jaime W. V. Mello 《Environmental monitoring and assessment》2011,172(1-4):631-642
The Iron Quadrangle has been one of the most important gold production regions in Brazil since the end of the seventeenth century. There, arsenic occurs in close association with sulfide-rich auriferous rocks. The most abundant sulfide minerals are pyrite and arsenopyrite, yet trace metal sulfides occur in subordinate phases as well. Historical mining activities have been responsible for the release of As and trace metals to both aquatic and terrestrial environments close to mining sites in the region. Therefore, this study was aimed to evaluate the distribution and mobility of As, Cd, Co, Cr, Cu, Ni, Pb, and Zn in streams in the southeast portion of the Iron Quadrangle between the municipalities of Ouro Preto and Mariana, the oldest Brazilian Au mining province. Total concentrations of some trace metals and arsenic in water were determined. The four-stage sequential extraction procedure proposed by the commission of the European Communities Bureau of Reference (BCR) was used to investigate the distribution of these elements in stream sediments. Arsenic concentration in water was >10 ??g L???1 (maximum limit permitted by Brazilian environmental regulations for water destined for human consumption) at all sampling sites, varying between 36.7 and 68.3 ??g L???1. Sequential extraction in sediments showed high concentrations of As and trace metals associated with easily mobilized fractions. 相似文献
227.
Martins Thiago Rodrigues Bertuol Daniel Assumpo Tanabe Eduardo Hiromitsu 《Journal of Material Cycles and Waste Management》2022,24(2):633-641
Journal of Material Cycles and Waste Management - Technological development has led to a growing generation of waste electrical and electronic equipment, including cables. This work concerns the... 相似文献
228.
Zamora-Briseño Jesús Alejandro Améndola-Pimenta Monica Ortega-Rosas Daniel Antonio Pereira-Santana Alejandro Hernández-Velázquez Ioreni Margarita González-Penagos Carlos Eduardo Pérez-Vega Juan Antonio del Río-García Marcela Árcega-Cabrera Flor Rodríguez-Canul Rossanna 《Environmental science and pollution research international》2021,28(26):34309-34327
Environmental Science and Pollution Research - Crude oil is one of the most widespread pollutants released into the marine environment, and native species have provided useful information about the... 相似文献
229.
Schneider Silvana Demarqui Fábio de Freitas Costa Eduardo 《Environmental and Ecological Statistics》2022,29(4):869-911
Environmental and Ecological Statistics - Populations of free-ranging dogs are still a matter of concern in developing countries. The presence of stray dogs is associated with environmental and... 相似文献
230.
Curbani Franciane Entringer Lacerda Kaio Calmon Curbani Flávio Barreto Fernando Túlio Camilo Tadokoro Carlos Eduardo Chacaltana Julio Tomás Aquije 《Environmental Modeling and Assessment》2022,27(2):233-249
Environmental Modeling & Assessment - Subtropical estuaries such as the Vitória Island Estuarine System (VIES), located on the central coast of Brazil, are under strong anthropic pressure.... 相似文献