全文获取类型
收费全文 | 291篇 |
免费 | 0篇 |
国内免费 | 8篇 |
专业分类
安全科学 | 17篇 |
废物处理 | 10篇 |
环保管理 | 44篇 |
综合类 | 49篇 |
基础理论 | 53篇 |
污染及防治 | 84篇 |
评价与监测 | 20篇 |
社会与环境 | 19篇 |
灾害及防治 | 3篇 |
出版年
2023年 | 8篇 |
2022年 | 13篇 |
2021年 | 18篇 |
2020年 | 8篇 |
2019年 | 4篇 |
2018年 | 5篇 |
2017年 | 9篇 |
2016年 | 6篇 |
2015年 | 7篇 |
2014年 | 9篇 |
2013年 | 36篇 |
2012年 | 9篇 |
2011年 | 12篇 |
2010年 | 11篇 |
2009年 | 14篇 |
2008年 | 11篇 |
2007年 | 15篇 |
2006年 | 15篇 |
2005年 | 12篇 |
2004年 | 6篇 |
2003年 | 10篇 |
2002年 | 3篇 |
2001年 | 1篇 |
2000年 | 3篇 |
1999年 | 3篇 |
1998年 | 4篇 |
1997年 | 2篇 |
1996年 | 4篇 |
1995年 | 1篇 |
1994年 | 5篇 |
1993年 | 3篇 |
1992年 | 3篇 |
1991年 | 1篇 |
1990年 | 4篇 |
1989年 | 4篇 |
1987年 | 1篇 |
1986年 | 4篇 |
1985年 | 1篇 |
1982年 | 3篇 |
1981年 | 1篇 |
1978年 | 1篇 |
1973年 | 2篇 |
1955年 | 1篇 |
1938年 | 1篇 |
1933年 | 1篇 |
1931年 | 2篇 |
1926年 | 1篇 |
1920年 | 1篇 |
排序方式: 共有299条查询结果,搜索用时 62 毫秒
251.
Mark Person Amlan Banerjee John Rupp Cristian Medina Peter Lichtner Carl Gable Rajesh Pawar Michael Celia Jennifer McIntosh Victor Bense 《International Journal of Greenhouse Gas Control》2010,4(5):840-854
Idealized, basin-scale sharp-interface models of CO2 injection were constructed for the Illinois basin. Porosity and permeability were decreased with depth within the Mount Simon Formation. Eau Claire confining unit porosity and permeability were kept fixed. We used 726 injection wells located near 42 power plants to deliver 80 million metric tons of CO2/year. After 100 years of continuous injection, deviatoric fluid pressures varied between 5.6 and 18 MPa across central and southern part of the Illinois basin. Maximum deviatoric pressure reached about 50% of lithostatic levels to the south. The pressure disturbance (>0.03 MPa) propagated 10–25 km away from the injection wells resulting in significant well–well pressure interference. These findings are consistent with single-phase analytical solutions of injection. The radial footprint of the CO2 plume at each well was only 0.5–2 km after 100 years of injection. Net lateral brine displacement was insignificant due to increasing radial distance from injection well and leakage across the Eau Claire confining unit. On geologic time scales CO2 would migrate northward at a rate of about 6 m/1000 years. Because of paleo-seismic events in this region (M5.5–M7.5), care should be taken to avoid high pore pressures in the southern Illinois basin. 相似文献
252.
CO2 utilizations are essential to curbing the greenhouse gas effect and managing the environmental pollutant in an energy-efficient and economically-sound manner.This paper seeks to critically analyze these technologies in the context of each other and highlight the most important utilization avenues available thus far.This review will introduce and analyze each major pathway,and discuss the overall applicability,potential extent,and major limitations of each of these pathways to util... 相似文献
253.
Tomiwa Sunday Adebayo Festus Victor Bekun Ilhan Ozturk Murat Ismet Haseki 《Natural resources forum》2023,47(2):334-352
This study corroborates the importance of United Nations Sustainable Development Goal 7 (SDG-7), intended to ensure access to affordable, reliable, sustainable energy for all, and SDG-8, designed to promote decent work and sustainable economic growth. This article is motivated by the highlighted SDGs and empirically explores the long-run and causality relationship between energy consumption, urbanization, trade openness, and economic growth for annual frequency data from 1965 to 2021 for the case of Mexico. To this end, we leverage the use of fully modified ordinary least squares, dynamic ordinary least squares, and canonical regression estimation methods, while for the direction of causality, the gradual shift and wavelet coherence methods are used. According to the Autoregressive distributed lag (ARDL), the bounds test traces a long-run relationship between the outlined variables over the sampled period. Empirical evidence validates the energy-induced growth hypothesis. This result resonates with the causality analysis, where energy consumption drives economic growth one way in Mexico. This suggests that Mexico cannot embark on energy-conservative policies, as such actions will hurt economic progress. In addition, unidirectional causality is seen between urbanization, trade openness, and economic growth. These findings have far-reaching implications for economic growth and macroeconomic indicators in Mexico. More insights are highlighted in the concluding section. 相似文献
254.
The problem of forest degradation and loss has become the concern of many countries. To address this challenge, some collaborate in sustainable forest management. The most successful outcomes, however, are observed where local participation is an essential part of conservation efforts. In Ghana, forests have experienced various degrees of exploitation over the years, resulting in their ecological decline. Despite its designation as a protected area for biodiversity and ecosystem services, the Atewa Range Forest Reserve in Ghana has been significantly impacted by deforestation, illegal mining, and other destructive activities. The purpose of this paper is to examine ecologically based management approaches that could be adopted to generate beneficial outcomes for all forest stakeholders and actors in Ghana. The study sampled forest stakeholders in Kwabeng, the administrative capital of the Atewa West District, to understand forest governance challenges and outline strategies for overcoming them. The study revealed that a bottom-up all-inclusive approach to managing forest resources is necessary. This paper, therefore, proposes an integrated forest governance that prioritizes the UN Sustainable Development Goal 15—Life on Land-related to forest preservation. 相似文献
255.
Yu. Svirezhev V. Brovkin W. von Bloh H.J. Schellnhuber G. Petschel-Held 《Environmental Modeling and Assessment》1999,4(1):23-33
A simple model has been designed to describe the interaction of climate and biosphere. Carbon dioxide, understood as a major
emitted gas, leads to a change of global climate. Economic interpretation of the model is based on the maximisation of the
global CO2 cumulative emissions. The two most important profiles of emission have been obtained: optimal and multi-exponential suboptimal
profiles, each displaying different characteristics.
This revised version was published online in July 2006 with corrections to the Cover Date. 相似文献
256.
257.
Ecology matters: sustainable development in Southeast Asia 总被引:1,自引:1,他引:0
Victor R. Savage 《Sustainability Science》2006,1(1):37-63
258.
Martin Claussen Victor Brovkin Andrey Ganopolski Claudia Kubatzki Vladimir Petoukhov Stefan Rahmstorf 《Environmental Modeling and Assessment》1999,4(4):209-216
We present a new reduced-form model for climate system analysis. This model, called CLIMBER-2 (for CLIMate and BiosphERe, level 2), fills the current gap between simple, highly parameterized climate models and computationally expensive coupled models of global atmospheric and oceanic circulation. We outline the basic assumptions implicit in CLIMBER-2 and we present examples of climate system analysis including a study of atmosphere–ocean interaction during the last glacial maximum, an analysis of synergism between various components of the climate system during the mid-Holocene around 6000 years ago, and a transient simulation of climate change during the last 8000 years. These studies demonstrate the feasibility of a computationally efficient analysis of climate system dynamics which is a prerequisite for future climate impact research and, more generally, Earth system analysis, i.e., the analysis of feedbacks between our environment and human activities. 相似文献
259.
Yuri Gorokhovich Reza Khanbilvardi Lorraine Janus Victor Goldsmith David Stern 《Journal of the American Water Resources Association》2000,36(3):523-539
ABSTRACT: The purpose of this paper is to present a new approach for the spatially distributed modeling of water flow during storm events. Distributed modeling of flow during storm events is an important basis for any environmental modeling, including turbidity or sediment transport. During the initial phase of a rainstorm, surface runoff is the main contributor of flow. To provide the spatial components for distributed hydrological modeling a Geographic Information System (GIS) was used to map and visualize contributing areas around a stream channel. Stream segments were defined using the hydrologic response unit (HRU) concept. Lateral flows were derived from GIS output for each segment of the stream and at each time interval of the rain storm and were routed using the kinematic routing equation. This approach is new in hydrological modeling and can be used to enhance many existing simulations. The model is also unique in the fine time scale (i.e., intervals are on the order of minutes). Model results showed good correlation with measured discharge values; however, further studies of contributing area behavior, its relationship with soil types and slope categories, and the influence of watershed size are needed to improve model performance. This model will be used in the future as the basis to model turbidity in streams. 相似文献
260.