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731.
Francisco Taveira Pinto 《Journal of Coastal Conservation》2004,10(1):147-157
The practice of coastal zone management in Portugal is very recent. Key issues and considerations about natural shoreline
dynamics, main policy instruments, and lessons learned from the EU Demonstration Programmes on Integrated Coastal Zone Management
in Portugal will be outlined in this paper in an attempt to understand how the practice of ICZM and its prospects are. Coastal
zone management problems and their associated side effects, as well as national and international evolution patterns will
be drawn. Some means of achieving better coastal zone management practices and ways of addressing some of its forefront issues
are also identified. Special attention will go to erosion problems. The pressure induced by urban development and economic
activities on coastal areas is increasing. Poor sediment availability combined with years of neglected management and over-exploitation
of resources have had a negative impact, and there are many areas showing evidence of coastal erosion. There is a need to
improve policies and instruments of coastal planning and management. Coastal zone management plans are being developed for
the nine sectors of the continental Portuguese coast, providing a full analysis of coastal systems and a delimitation of uses
in relation to the carrying capacity of the shoreline. 相似文献
732.
Alison M. Barker Reitumetse Molotsane Caroline Müller Urs Schaffner Erich Städler 《Chemoecology》2006,16(4):209-218
Summary. The turnip sawfly Athalia rosae sequesters glucosinolates from its cruciferous host plants in the larval stage. Investigation of the chemosensory and behavioural
responses of adult A. rosae to glucosinolates and their volatile hydrolysis products, isothiocyanates, revealed that females detect glucosinolates by
contact chemoreception and isothiocyanates by antennal olfaction. In electroantennogram recordings, four isothiocyanates (allyl
[2-propenyl] isothiocyanate, benzyl isothiocyanate, butyl isothiocyanate and iberverin [3-methylthiopropyl isothiocyanate])
were active at all doses presented, including the lowest (0.1 μg), whilst the threshold for detection of three others, iberin
[3-methylsulphinylpropyl isothiocyanate], methyl isothiocyanate, and sulforaphane [4-methylsulphinylbutyl isothiocyanate],
was higher, at between 1 and 10 μg (source concentration of volatiles). Allyl isothiocyanate attracted experienced females
in a four-chambered olfactometer, whilst na?ve females showed no response. Allyl isothiocyanate also attracted mature females
to baited yellow water traps in field trials, although immature females were repelled at high isothiocyanate concentrations.
In laboratory behavioural bioassays the glucosinolates sinigrin (allyl [2-propenyl] glucosinolate) and sinalbin (p-hydroxybenzyl
glucosinolate), stimulated ovipositor probing in mature female A. rosae to an extent comparable to hot-water extracts of their host plants. These responses show that glucosinolates and isothiocyanates
play an important role in host finding and host recognition in A. rosae. 相似文献
733.
Urs Baumann Caroline Brunner Ernst Pletscher Nicole Tobler 《Environmental Sciences Europe》2003,15(3):163-167
The goal of this work is to make ecotoxicologically-relevant substance bands visible on thin-layer chromatographic plates. Bacteria (Bacillus subtilis, Vibrio fischeri, Salmonella typhimurium), fungi (Aspergillus niger), algi (Pseudokirchneriella subcapitata) and pollen (Impatiens walleriana) were used as test organisms. With the aid of these organisms, it has been possible to identify bactericide, fungicide, algicide, phytotoxic and genotoxic bands. 相似文献
734.
The present study investigated the discrepancies, or conflict, between the attributions of leaders and members as a function of LMX quality and explored the relation between attributional conflict and subordinate job satisfaction, perceptions of equity, and turnover intentions. Data for the study were provided by 141 supervisor-subordinate dyads from the managerial ranks of a large manufacturing organization. Both parties of the dyad made attributions for subordinate loyalty, affect, and contributions, member behaviors identified as critical in previous LMX research. Limited support emerged for the hypothesis that attributional conflict would be greater in dyads where subordinates reported lower rather than higher LMX quality. Findings suggested that attributional discrepencies are due, in part, to the tendency of leaders to make more favorable attributions for subordinates reporting higher LMX quality than for subordinates reporting lower LMX quality. Results also revealed that, while attributional conflict was negatively related to subordinate satisfaction and perceptions of equity and positively related to turnover intentions, attributional conflict did not predict subordinate work outcomes when the effects of LMX quality were controlled. Implications of these findings were discussed. 相似文献
735.
Mirady Sebastiani Sara Elena González María Mercedes Castillo Pablo Alvizu María Albertina Oliveira Jorge Pérez Antonio Quilici Martín Rada María Carolina Yáber Miguel Lentino 《Environmental management》1994,18(5):647-661
In Venezuela, large-scale shrimp farming began in the 1980s. By 1987, the Ministry of Environment and Natural Resources (MARNR)
had received 14 proposals for approval. A developer illegally started the construction of ponds at the Píritu Lagoon in the
State of Anzoátegui before the authorization process was completed. This action triggered a land-use conflict. This study
identifies the causes for public protest and determines the consequences of this conflict for land-use management. The results
show that public protest was based on the impacts of the partial construction of ponds. These impacts were related to direct
removal of wetlands, interruption of natural patterns of surface flows, and alteration of feeding grounds of some bird species
with migratory status. Consequences were identified in relation to the role that nongovernmental organizations (NGOs) play
in land-use conflicts and the actions that MARNR could take in the future to prevent and solve similar situations. 相似文献
736.
737.
Francesca Romana Grati Denise Molina Gomes Jose Carlos Pinto B. Ferreira Celine Dupont Viola Alesi Laetitia Gouas Nina Horelli-Kuitunen Kwong Wai Choy Sandra García-Herrero Alberto Gonzalez de la Vega Krzysztof Piotrowski Rita Genesio Gloria Queipo Barbara Malvestiti Bérénice Hervé Brigitte Benzacken Antonio Novelli Philippe Vago Kirsi Piippo Tak Yeung Leung Federico Maggi Thibault Quibel Anne Claude Tabet Giuseppe Simoni François Vialard 《黑龙江环境通报》2015,35(8):801-809
738.
739.
740.