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841.
广东省产业绿色发展的空间格局及影响因素分析 总被引:1,自引:0,他引:1
产业绿色发展对构建高效低耗、绿色循环发展的产业体系、实现经济可持续发展具有重要意义。从产业绿色增长度、资源环境承载力和政府政策支撑力三个维度构建广东省产业绿色发展综合评价指标体系,采用熵值法,测度了2005-2015年广东省及各市产业绿色发展综合水平,并运用探索性空间数据分析方法剖析了广东省各市产业绿色发展的空间关联特征,在此基础上采用空间误差模型对广东省产业绿色发展水平的影响因素进行探讨。结果表明:(1)从总体水平看,广东省产业绿色发展综合水平基本呈现持续增长态势;(2)从空间分布看,其总体水平的空间格局呈现“核心—边缘”状,高水平主要集聚在珠三角,而中低水平主要分布在珠三角外围地区;(3)从空间演化看,2005-2015年广东省各市的产业绿色发展水平空间差异略有扩大,但总体格局保持相对稳定;(4)从空间关联特征看,广东省各市产业绿色发展水平的空间分布集聚格局基本稳定,珠三角城市处于高值集聚的热点地区,外围地区的东翼和北部山区部分城市处于低值集聚的冷点地区;(5)空间误差模型结果显示全球化、市场化、居民收入水平、政府调控和科技水平均对广东省产业绿色发展水平产生显著的正向影响,而城镇化对产业绿色发展的影响不显著。 相似文献
842.
分析了加入WTO后,中国企业面临的"绿色壁垒",阐述了企业"绿色革命"的内容和措施,说明了"绿色革命"对提升企业在国际市场的竞争力的作用. 相似文献
843.
创建绿色社区构建和谐社会--环境保护公众参与的有效途径 总被引:3,自引:0,他引:3
本文运用社会学和政策学原理,结合内蒙古自治区创建绿色社区的实践,从创建绿色社区的背景、绿色社区的有关概念、创建绿色社区的必要性和可行性分析、绿色社区的指标体系框架和创建绿色社区的主要方法等5个方面,对如何开展创建绿色社区工作进行了讨论。文章对即将在我区全面开展的创建绿色社区工作有一定的借鉴意义。 相似文献
844.
Bytnerowicz A Manning WJ Grosjean D Chmielewski W Dmuchowski W Grodzinska K Godzik B 《Environmental pollution (Barking, Essex : 1987)》1993,80(3):301-305
Ambient concentrations of ozone (O(3)) were measured and O(3) phytotoxicity to tobacco (Nicotiana tabacum L.) was demonstrated in several forest locations in Poland during a pilot study from July-October, 1991. At southern and central locations in Poland, the 24-hour average O(3) concentrations measured with a UV absorption photometer were in the range of 32-55 ppb, and the corresponding 1-hour maxima in the range of 39-83 ppb. At these locations longer period (four to fifteen days) average concentrations were determined using O(3) passive samplers (DGA, Inc.) and were reaching 60 ppb, while at Bialowieza in eastern Poland O(3) concentrations averaged less than 40 ppb. In Szarow, near the Niepolomice Forest in southern Poland, 1-hour O(3) maxima estimated from the data obtained using passive samplers were about 105 ppb in early September. At several locations in southern and central Poland, extensive O(3) injury was determined on O(3)-sensitive Bel W-3 tobacco plants; such injury did not occur in the Bialowieza Forest of eastern Poland. The results of this pilot study indicate that O(3) is present at phytotoxic levels in southern and central Poland. 相似文献
845.
文章通过比对实验来探讨用孔雀绿试剂法测定地面水中阴离子表面活性剂的可行性.实验结果证明,该方法精密与准确性均达到现行监测规范要求,与国标亚甲基蓝分光光度法相比具有操作步骤简单,不用萃取剂,分析时间短的优点,可适用于地面水的监测. 相似文献
846.
847.
Scrubber water samples from different combustion plants and gypsum samples as obtained in the flue gas washing with lime water were analyzed for PCDD/F. Three of the investigated nine scrubber water samples showed PCDD/F contents between 0,4 and 11,5 ng I-TEq/1 where as in the 17 gypsum samples examined only in a few cases very low levels of HpCDD and OCDD could be detected. 相似文献
848.
849.
Uptake and Modeling of Pesticides by Roots and Shoots of Parrotfeather (Myriophyllum aquaticum) (5 pp) 总被引:1,自引:0,他引:1
Turgut C 《Environmental science and pollution research international》2005,12(6):342-346
Intention, Goal, Scope, Background Aquatic plants have a great potential to function as in situ, on-site biosinks and biofilters of pollutants. They are used
for phytoremediation and phytotoxicity studies. Pesticide uptake studies are very important to predict contaminant accumulation,
translocation, and transformation. There are a lot of models which have been developed for emergent plants, but there are
not any existing models for submerged aquatic plants for assessing pesticide uptake.
Objective In this study, uptake of selected pesticides in parrotfeather (Myriophyllum aquaticum) were studied and the results were
modeled with the aid of Log Kow and the concentration of pesticides. At the end, the developed model was compared to other
existing models.
Methods The test was conducted with parrotfeather as a model plant. The bioassay and cultivation of this plant were examined. Pesticide
uptake by roots and shoots was determined using 14C-radiolabeled materials.
Results and Discussion The results were fitted with an equation that showed a relationship between uptake and lipophilicity of pesticides. The model
was compared with other pesticide uptake models developed for other plants. Atrazine and cycloxidim were taken up more by
roots than by shoots in comparison to other pesticides used. The total uptake, both in shoots and roots, was lower than for
terbutryn and trifluralin. The best appropriate model was developed from the results against the other models seen in the
literature. The concentration factors (Root Concentration Factor (RCF) and Submerged Shoot Concentration Factor (SSCF)) increased
with a higher Kow of the substances. The Submerged Shoot Concentration Factor (SSCF) revealed a better relationship of the
chemicals than did the Root Concentration Factor (RCF).
Conclusions In this study, an uptake model was developed for rooted, submerged aquatic plants. Further studies are necessary to develop
and compare models with different plants and pesticides.
Recommendation and Outlook Such studies as this one may be extended to other environmental pollutants in the aquatic ecosystem and may be employed to
evaluate the possibility of using different plants in phytoremediation studies. 相似文献
850.