全文获取类型
收费全文 | 7330篇 |
免费 | 862篇 |
国内免费 | 2477篇 |
专业分类
安全科学 | 875篇 |
废物处理 | 299篇 |
环保管理 | 646篇 |
综合类 | 5044篇 |
基础理论 | 1206篇 |
污染及防治 | 1340篇 |
评价与监测 | 489篇 |
社会与环境 | 441篇 |
灾害及防治 | 329篇 |
出版年
2024年 | 41篇 |
2023年 | 151篇 |
2022年 | 429篇 |
2021年 | 455篇 |
2020年 | 457篇 |
2019年 | 319篇 |
2018年 | 341篇 |
2017年 | 387篇 |
2016年 | 380篇 |
2015年 | 477篇 |
2014年 | 543篇 |
2013年 | 718篇 |
2012年 | 661篇 |
2011年 | 691篇 |
2010年 | 642篇 |
2009年 | 625篇 |
2008年 | 573篇 |
2007年 | 511篇 |
2006年 | 478篇 |
2005年 | 319篇 |
2004年 | 231篇 |
2003年 | 198篇 |
2002年 | 183篇 |
2001年 | 177篇 |
2000年 | 161篇 |
1999年 | 106篇 |
1998年 | 109篇 |
1997年 | 65篇 |
1996年 | 60篇 |
1995年 | 43篇 |
1994年 | 29篇 |
1993年 | 27篇 |
1992年 | 19篇 |
1991年 | 17篇 |
1990年 | 15篇 |
1989年 | 9篇 |
1988年 | 5篇 |
1987年 | 5篇 |
1986年 | 1篇 |
1985年 | 1篇 |
1984年 | 2篇 |
1983年 | 5篇 |
1982年 | 1篇 |
1975年 | 1篇 |
1923年 | 1篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
Cao Yanmei Li Zhe Ji Wei Ma Meng 《Environmental science and pollution research international》2021,28(23):29467-29483
Environmental Science and Pollution Research - The aerodynamic noise around the high-speed railway bridge is studied by the train-bridge-flow field numerical model and theory analysis. With the... 相似文献
992.
Zheng Hu-Li Guo Ze-Li Wang Mei-ling Yang Chuan An Shu-Yi Wu Wei 《Environmental science and pollution research international》2021,28(39):54299-54316
Environmental Science and Pollution Research - The new severe acute respiratory syndrome coronavirus 2 was initially discovered at the end of 2019 in Wuhan City in China and has caused one of the... 相似文献
993.
Ma Huimin Di Danyang Li Lin Zhang Wei Wang Jianmei 《Environmental geochemistry and health》2022,44(9):2905-2918
Environmental Geochemistry and Health - Effective supply of environmental public services (EPS) is important to guarantee the mitigation of residential pollution exposure risk. This study analyzes... 相似文献
994.
Effects of intercropping with floricultural accumulator plants on cadmium accumulation in grapevine 总被引:2,自引:0,他引:2
Chen Hongqiang Lin Lijin Liao Ming’an Wang Jin Tang Yi Sun Guochao Liang Dong Xia Hui Deng Qunxian Wang Xun Lv Xiulan Ren Wei 《Environmental science and pollution research international》2019,26(24):24474-24481
Environmental Science and Pollution Research - Grapevine (Vitis vinifera L.) intercropping with floricultural cadmium (Cd) accumulator plants (Helianthus annuus L., Cosmos sulphureus Cav., Cosmos... 相似文献
995.
996.
997.
为评估食品企业氨制冷系统所处的风险状态,文章在HAZOP方法和LOPA方法理论研究的基础上,将其组合应用于食品企业氨制冷系统的风险评估中,以提前识别可能导致事故的原因和后果,确定现有防控措施是否足够、有效,并将风险控制在可接受水平。通过对氨制冷系统中低压循环桶液位过高场景的实例分析,得出该场景下的剩余风险基本在企业可接受范围内,不需要增加独立安全仪表系统的结论,为食品企业安全管理决策提供了科学依据。 相似文献
998.
Shestopaloff Konstantin Xu Wei Escobar Michael D. 《Environmental and Ecological Statistics》2020,27(3):447-465
Environmental and Ecological Statistics - In this paper we present a weighted mixture distribution component counts (MDCC) approach for estimating total number of species. The proposed method... 相似文献
999.
1000.
Fuwen Wei Ronald Swaisgood Yibo Hu Yonggang Nie Li Yan Zejun Zhang Dunwu Qi Lifeng Zhu 《Conservation biology》2015,29(6):1497-1507
Giant panda (Ailuropoda melanoleuca) conservation is a possible success story in the making. If extinction of this iconic endangered species can be avoided, the species will become a showcase program for the Chinese government and its collaborators. We reviewed the major advancements in ecological science for the giant panda, examining how these advancements have contributed to panda conservation. Pandas’ morphological and behavioral adaptations to a diet of bamboo, which bear strong influence on movement ecology, have been well studied, providing knowledge to guide management actions ranging from reserve design to climate change mitigation. Foraging ecology has also provided essential information used in the creation of landscape models of panda habitat. Because habitat loss and fragmentation are major drivers of the panda population decline, efforts have been made to help identify core habitat areas, establish where habitat corridors are needed, and prioritize areas for protection and restoration. Thus, habitat models have provided guidance for the Chinese governments’ creation of 67 protected areas. Behavioral research has revealed a complex and efficient communication system and documented the need for protection of habitat that serves as a communication platform for bringing the sexes together for mating. Further research shows that den sites in old‐growth forests may be a limiting resource, indicating potential value in providing alternative den sites for rearing offspring. Advancements in molecular ecology have been revolutionary and have been applied to population census, determining population structure and genetic diversity, evaluating connectivity following habitat fragmentation, and understanding dispersal patterns. These advancements form a foundation for increasing the application of adaptive management approaches to move panda conservation forward more rapidly. Although the Chinese government has made great progress in setting aside protected areas, future emphasis will be improved management of pandas and their habitat. 相似文献