全文获取类型
收费全文 | 10164篇 |
免费 | 10篇 |
国内免费 | 4篇 |
专业分类
安全科学 | 20篇 |
废物处理 | 813篇 |
环保管理 | 1260篇 |
综合类 | 1007篇 |
基础理论 | 3195篇 |
污染及防治 | 1901篇 |
评价与监测 | 1055篇 |
社会与环境 | 926篇 |
灾害及防治 | 1篇 |
出版年
2023年 | 11篇 |
2022年 | 27篇 |
2021年 | 30篇 |
2020年 | 8篇 |
2019年 | 17篇 |
2018年 | 1490篇 |
2017年 | 1386篇 |
2016年 | 1215篇 |
2015年 | 140篇 |
2014年 | 36篇 |
2013年 | 56篇 |
2012年 | 495篇 |
2011年 | 1378篇 |
2010年 | 704篇 |
2009年 | 635篇 |
2008年 | 897篇 |
2007年 | 1243篇 |
2006年 | 22篇 |
2005年 | 49篇 |
2004年 | 43篇 |
2003年 | 81篇 |
2002年 | 114篇 |
2001年 | 22篇 |
2000年 | 15篇 |
1999年 | 3篇 |
1998年 | 15篇 |
1997年 | 1篇 |
1996年 | 5篇 |
1995年 | 3篇 |
1994年 | 3篇 |
1993年 | 2篇 |
1992年 | 2篇 |
1990年 | 2篇 |
1988年 | 1篇 |
1984年 | 12篇 |
1983年 | 9篇 |
1982年 | 1篇 |
1973年 | 1篇 |
1971年 | 1篇 |
1963年 | 1篇 |
1935年 | 2篇 |
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
961.
Bacterial community profiles from sediments of the Anacostia River using metabolic and molecular analyses 总被引:1,自引:0,他引:1
Bushaw-Newton KL Ewers EC Velinsky DJ Ashley JT Macavoy SE 《Environmental science and pollution research international》2012,19(4):1271-1279
Background aim and scope
Though the tidal Anacostia River, a highly polluted riverine system, has been well characterized with regard to contaminants, its overall resident bacterial populations have remained largely unknown. Improving the health of this system will rely upon enhanced understanding of the diversity and functions of these communities. Bacterial DNA was extracted from archived (AR, year 2000) and fresh sediments (RE, year 2006) collected from various locations within the Anacostia River. Using a combination of metabolic and molecular techniques, community snapshots of sediment bacterial diversity and activity were produced. 相似文献962.
Simultaneous immobilization of metals and arsenic in acidic polluted soils near a copper smelter in central Chile 总被引:1,自引:0,他引:1
Cárcamo V Bustamante E Trangolao E de la Fuente LM Mench M Neaman A Ginocchio R 《Environmental science and pollution research international》2012,19(4):1131-1143
Introduction
Acidic and metal(oid)-rich topsoils resulted after 34 years of continuous operations of a copper smelter in the Puchuncaví valley, central Chile. Currently, large-scale remediation actions for simultaneous in situ immobilization of metals and As are needed to reduce environmental risks of polluted soils. Aided phytostabilization is a cost-effective alternative, but adequate local available soil amendments have to be identified and management options have to be defined. 相似文献963.
964.
Maestri E Singh BR Marmiroli N 《Environmental science and pollution research international》2012,19(4):1348-1350
965.
Rüdel H Müller J Quack M Klein R 《Environmental science and pollution research international》2012,19(3):772-783
Background and aims
Hexabromocyclododecane (HBCD) is a brominated flame retardant used mainly in polystyrene foam as well as in textile applications. In recent years, measures were taken to reduce HBCD emissions during its production and use. To evaluate the efficacy of these measures, a monitoring project was initiated with fish as bioaccumulation indicators. 相似文献966.
Manaca MN Grimalt JO Gari M Sacarlal J Sunyer J Gonzalez R Dobaño C Menendez C Alonso PL 《Environmental science and pollution research international》2012,19(3):756-762
Introduction
We report on the analysis of 4,4′-dichlorodiphenyltrichloroethane (4,4′-DDT) and its metabolites in thatch and branch samples constituting the wall materials of dwellings from South African subtropical areas. This approach was used to assess the exposure to DDT in the residents of the dwellings after indoor residual spraying (IRS) following recommended sanitation practices against malaria vectors. 相似文献967.
Boufahja F Hedfi A Essid N Aïssa P Mahmoudi E Beyrem H 《Environmental science and pollution research international》2012,19(3):646-655
Introduction
We conducted a yearly polluted-reference sampling to assess the effects of petroleum pollution on life cycle characteristics of the meiobenthic nematode Odontophora villoti. Samples were taken every 15 days between 26 November 2004 and 25 November 2005 from two beaches of Bizerte bay (Tunisia), Rimel and Tunisian Refining Industries Company (TRIC). The latter site is located in front of the “Tunisian Refining Industries Company” runoff. 相似文献968.
Suciu NA Ferrari T Ferrari F Trevisan M Capri E 《Environmental science and pollution research international》2012,19(4):1229-1236
Purpose
Many reports on purification of water containing pesticides are based on studies using unformulated active ingredients. However, most commercial formulations contain additives/adjuvants or are manufactured using microencapsulation which may influence the purification process. Therefore, the main objective of this work was to develop and test a pilot scheme for decontaminating water containing pesticides formulated with antifoaming/defoaming agents. 相似文献969.
Alternative approaches to dealing with respondent uncertainty in contingent valuation: a comparative analysis 总被引:1,自引:0,他引:1
Several strategies have been proposed to deal with response uncertainty in contingent valuation. One approach, often applied to address issues of hypothetical bias, recodes and/or reweights responses according to stated levels of certainty but so far few analyses compare alternative recoding and reweighting strategies. We explore the choice among alternative strategies that exploit a numerical certainty scale obtained from a follow-up to the payment question in a valuation survey about a whale conservation program. Two novel variations of previously followed approaches perform best on our dataset in terms of the efficiency of estimates. The first one uses an exponential transformation of the numerical certainty scale as a weight in the willingness to pay regression. The other one is based on constructing a continuous willingness to pay variable with the highly certain "yes" and "no" original responses to the payment question as extreme values and with mid-point values that correspond to the original "don't know" responses. We find, though, that the effect of using different treatment strategies on mean willingness to pay is rarely statistically significant and we fail to detect a consistent effect on the efficiency of the estimation regardless of the strategy applied. 相似文献
970.
The Ernesto Tornquist nature reserve is a relict of native Pampas vegetation in Argentina. Alien trees were introduced to the reserve in the 1950s, mainly to "improve" the natural landscape, resulting in the arrival of a totally new life form. In 1987, a fire affected an area planted with Pinus halepensis resulting in its massive expansion. In 1999, we removed trees from 17 circular plots of 10 m diameter placed systematically within the area that was colonized after the fire. Trunks were cut 20 cm from the ground and growth rings were counted. We studied the age structure of the population in order to reconstruct the colonizing events after the fire. We found that recruitment occurred throughout this period, except in the three years after the disturbance. We suggest that this delay in recruitment might be caused by low seedling survival under water stress conditions due to low rainfall, combined with scarce vegetation cover after fire. This could have been associated with an initial reduction in propagule pressure due to the scarcity of surviving trees in the vicinity and with the fact that fire occurred after the peak of seed release, during an extremely dry summer, probably killing a great number of seeds that were already in the soil. In the following years, recruitment was probably aided by pioneer trees and later by seeds shed from established pines. Alien trees had been allowed to reach maturity due to wildfire prevention and control in the years preceding the fire and the accumulated dry matter resulted in increased fire intensity that reduced the ability of grasses to re-sprout. As a consequence, the invasion window that allowed the expansion of pines remained open for at least 12 years. 相似文献