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251.
Zooplankton community structure across an eddy-generated upwelling band close to a tropical bay-mangrove ecosystem 总被引:2,自引:0,他引:2
M. Rakhesh A. V. Raman C. Kalavati B. R. Subramanian V. S. Sharma E. Sunitha Babu Nanduri Sateesh 《Marine Biology》2008,154(6):953-972
Mesoscale eddies in the world’s oceans are ubiquitous and bring about episodic pulses of nutrients into the photic zone. Transient
in nature, the role of eddy pumping in coastal enrichment via plankton production, and subsequent organic flux is not yet
fully realised. In the context of a cyclonic cold-core eddy that propagates annually under the influence of the East India
Coastal Current and enriches coastal waters in the western Bay of Bengal north of 16°N, a detailed study on zooplankton community
structure along with phytoplankton composition and associated water quality was undertaken during April–May 2002 coinciding
with the spring intermonsoon. Zooplankton samples were collected at 32 hydrographically different (salinity 24.5–35.6 PSU)
GPS fixed locations representing bay-mangrove areas and nearshore waters (30 m) close to the River Godavari, which is one
of India’s largest estuarine systems. During the study, the bay-coastal waters were typified by elevated nutrient levels (nitrate
10.73–22.04 μM), high salinity (27.98–35.52 PSU), and relatively low temperatures (30.63–31.40°C). Altogether, 95 zooplankton
taxa were encountered with copepods forming the predominant population. Agglomerative Hierarchical Cluster Analysis (AHCA)
and Non-metric Multidimensional Scaling (NMDS) based on Bray–Curtis similarity (PRIMER) analysis revealed appreciable alterations
in zooplankton structure across bay-mangrove locations and coastal waters (Stress 0.11; ANOSIM test Global R: 0.94, P = 0.1%). Similarity Percentage (SIMPER) analysis revealed zooplankton associations through “discriminating species” for each
location (Kakinada Bay, Cluster I, 27.9 ± 3.0 PSU; upwelling band, cluster II, 35.5 ± 0.2 PSU; offshore waters, cluster III,
34.2 ± 0.4 PSU; mangrove outlets, cluster IV, 32.7 ± 1.3 PSU and mangrove creeks, cluster V, 33.5 ± 0.6 PSU). The index of
multivariate dispersion (IMD) illustrated high variability in zooplankton standing stock for mangrove/sea locations relative
to the bay. Concurrent observations on phytoplankton revealed the importance of diatoms (r: 0.640, P ≤ 0.05). Within the eddy-generated band of upwelled water, a significant top-down control of diatoms by herbivorous zooplankton
resulted in a comparative increase in abundance of dinophyceans. Based on zooplankton abundance data and species association
patterns, it was possible to distinguish different zooplankton/copepod communities in accordance with mesoscale variability
in physical, chemical and biological processes under tropical conditions. This was confirmed through canonical correspondence
analysis (CCA) that represented coastal-offshore waters and the Bay environment in this area. 相似文献
252.
Sippy K. Chauhan Sangita Sharma Anuradha Shukla S. Gangopadhyay 《Environmental science and pollution research international》2010,17(9):1493-1501
Bitumen is a black, thermoplastic, hydrocarbon material derived from the processing of crude oil. At ambient temperature,
bitumen is solid and does not present any health/environmental risks. This is one of the main reasons that bitumen is widely
used for road construction all over the world. But during manufacturing/modification according to its application, storage,
transportation, and use of bitumen is heated giving off various hydrocarbons emissions. In recent years, there has been increasing
interest in investigating the potential of bitumen emissions to cause health effects. This is mainly because of the reason
that bitumen has small amount of poly-aromatic hydrocarbons, along with some other volatiles like benzene, toluene, etc.,
which are known to be carcinogenic in nature. Thus, assessment of the emission characteristics and health hazards of bitumen
fumes may have far reaching industrial economic and public health implications. In this review, we will discuss about the
emission characteristics from bitumen, asphalts, or road construction, which is mainly contributed by bitumen fumes. Sampling
strategies and analytical methods employed are also described briefly. 相似文献
253.
Agrawal Yash Gupta Trilok Sharma Ravi K. 《Journal of Material Cycles and Waste Management》2022,24(1):268-286
Journal of Material Cycles and Waste Management - The present study focuses on utilizing stockpiled dolomite quarry waste for sustainable and cleaner production of concrete. Natural river sand is... 相似文献
254.
Jay M. Schoen Amrita Neelakantan Samuel A. Cushman Trishna Dutta Bilal Habib Yadvendradev V. Jhala Indranil Mondal Uma Ramakrishnan P. Anuradha Reddy Swati Saini Sandeep Sharma Prachi Thatte Bibek Yumnam Ruth DeFries 《Conservation biology》2022,36(4):e13909
As ecological data and associated analyses become more widely available, synthesizing results for effective communication with stakeholders is essential. In the case of wildlife corridors, managers in human-dominated landscapes need to identify both the locations of corridors and multiple stakeholders for effective oversight. We synthesized five independent studies of tiger (Panthera tigris) connectivity in central India, a global priority landscape for tiger conservation, to quantify agreement on landscape permeability for tiger movement and potential movement pathways. We used the latter analysis to identify connectivity areas on which studies agreed and stakeholders associated with these areas to determine relevant participants in corridor management. Three or more of the five studies’ resistance layers agreed in 63% of the study area. Areas in which all studies agree on resistance were of primarily low (66%, e.g., forest) and high (24%, e.g., urban) resistance. Agreement was lower in intermediate resistance areas (e.g., agriculture). Despite these differences, the studies largely agreed on areas with high levels of potential movement: >40% of high average (top 20%) current-flow pixels were also in the top 20% of current-flow agreement pixels (measured by low variation), indicating consensus connectivity areas (CCAs) as conservation priorities. Roughly 70% of the CCAs fell within village administrative boundaries, and 100% overlapped forest department management boundaries, suggesting that people live and use forests within these priority areas. Over 16% of total CCAs’ area was within 1 km of linear infrastructure (437 road, 170 railway, 179 transmission line, and 339 canal crossings; 105 mines within 1 km of CCAs). In 2019, 78% of forest land diversions for infrastructure and mining in Madhya Pradesh (which comprises most of the study region) took place in districts with CCAs. Acute competition for land in this landscape with globally important wildlife corridors calls for an effective comanagement strategy involving local communities, forest departments, and infrastructure planners. 相似文献
255.
Al-Harrasi Ahmed Behl Tapan Upadhyay Tanuj Chigurupati Sridevi Bhatt Shvetank Sehgal Aayush Bhatia Saurabh Singh Sukhbir Sharma Neelam Vijayabalan Shantini Palanimuthu Vasanth Raj Das Suprava Kaur Rajwinder Aleya Lotfi Bungau Simona 《Environmental science and pollution research international》2022,29(28):42404-42432
Environmental Science and Pollution Research - The human coronavirus disease (COVID-19) pandemic is caused by a novel coronavirus; the Severe Acute Respiratory Syndrome Coronavirus (SARS-CoV-2).... 相似文献
256.
Singh Snehdeep Hundal Jaspal Singh Patra Amlan Kumar Sethi Ram S. Sharma Amit 《Environmental science and pollution research international》2022,29(17):24757-24773
Environmental Science and Pollution Research - The effects of a composite polyphenolic-rich extract (CPRE) on ruminal fermentation, nutrient utilisation, growth performance, excretion of nitrogen... 相似文献
257.
Mukherjee Tuhin Behl Tapan Sharma Sanchay Sehgal Aayush Singh Sukhbir Sharma Neelam Mathew Bijo Kaur Jasleen Kaur Ratandeep Das Mayukh Aleya Lotfi Bungau Simona 《Environmental science and pollution research international》2022,29(6):8109-8125
Environmental Science and Pollution Research - Vasoactive intestinal peptide (VIP) is a neuropeptide that is produced by the lymphoid cells and plays a major role in immunological functions for... 相似文献
258.
Rather Imran Ibni Gani Behl Tapan Sehgal Aayush Singh Sukhbir Sharma Neelam Sharma Aditi Bhatia Saurabh AL-Harrasi Ahmed Khan Nadeem Khan Haroon Bungau Simona 《Environmental science and pollution research international》2022,29(12):17417-17424
Environmental Science and Pollution Research - The RhoA gene showed an important genotypic association with nicotine dependence and smoking initiation. The current study aims to investigate the... 相似文献
259.
Kumari Smita Sharma Sudhanshu Advani Dia Khosla Akanksha Kumar Pravir Ambasta Rashmi K. 《Environmental science and pollution research international》2022,29(41):62111-62159
Environmental Science and Pollution Research - The etiology of the majority of human cancers is associated with a myriad of environmental causes, including physical, chemical, and biological... 相似文献
260.
Shinde Ambika H. Sharma Ashwini Doshi Saksham Kumar Madhava Anil Haldar Soumya 《Environmental science and pollution research international》2022,29(36):54136-54149
Environmental Science and Pollution Research - Reduced sulfur compounds are a nuisance in coastal industries causing heavy economical as well as ecological loss. One such compound, hydrogen... 相似文献