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排序方式: 共有1944条查询结果,搜索用时 733 毫秒
881.
随着经济全球化、城市化进程的加剧,城市生态的规划建设对社会经济发展起着至关重要的作用。从可持续发展视域探讨当前城市规划建设中存在的由规划滞后、规划重复、规划片面、执法不严等造成的城市规划环境污染、资源浪费和生态破坏的问题,提出构建城市生态规划的现实必然性和基本原则,从强化机制、转变观念、以人为本、健全法制、合理规划等角度探讨可持续发展视阈下城市生态规划的途径。 相似文献
882.
883.
Yan Guo Zibin Luo Junhao Shen Yu-You Li 《Frontiers of Environmental Science & Engineering》2022,16(7):84
884.
Kaixuan Zheng Xingshen Luo Yiqi Tan Zhonglei Li Hongtao Wang Tan Chen Li Zhao Liangtong Zhan 《Frontiers of Environmental Science & Engineering》2022,16(12):156
885.
Luo Rui Yang Shiliang Wang Zhiying Zhang Tianming Gao Pengqun 《Environmental science and pollution research international》2022,29(14):20234-20248
Environmental Science and Pollution Research - The motivation of this fundamental research is to reveal the response of ecosystem services to land use change and to support the sustainable... 相似文献
886.
Ashraf Junaid Luo Liangqing Anser Muhammad Khalid 《Environmental science and pollution research international》2022,29(6):8438-8451
Environmental Science and Pollution Research - The effect of quality institutions on growth-environmental nexus is a generally ignored topic, especially in South Asia economies affiliated with the... 相似文献
887.
Yuan Qingjiang Sui Meiping Qin Chengzhi Zhang Hongying Sun Yingjie Luo Siyi Zhao Jianwei 《Environmental science and pollution research international》2022,29(18):26045-26062
Environmental Science and Pollution Research - Macrolide antibiotics (MAs), as a typical emerging pollutant, are widely detected in environmental media. When entering the environment, MAs can... 相似文献
888.
Wang Ling-Yu Li Xue Luo Kun Song Yu-Hao Liu Ren-Guo 《Environmental science and pollution research international》2022,29(48):72159-72168
Environmental Science and Pollution Research - In this study, cationic polyacrylamide (CPAM)-modified diatomite and cetyl trimethyl ammonium bromide (CTAB)-modified... 相似文献
889.
逐级提取试验研究岩石中氟的化学活动性 总被引:1,自引:1,他引:0
使用逐级化学提取方法对岩石中氟元素的化学活动性进行了研究.结果表明,不同时代、不同类型岩石中氟的化学活动性具有很大的差异,碳酸盐岩中氟均具有很强的化学活动性,其中氟的可淋失比例一般高于75%;下寒武统黑色岩系中氟的化学活动性与岩石变质程度有关,变质程度较高的黑色碳质板岩中氟的可淋失比例一般小于黑色页岩、黑色硅质岩中氟的可淋失比例.磷块岩中氟的可淋失比例较高,而千枚岩中氟的可淋失比例一般较低;辉绿岩中氟的可淋失比例与原岩中氟含量存在正相关关系.不同时代的石煤中氟的化学活动性具有较大差异.下志留统石煤中氟的可淋失比例(平均为47.39%)一般高于下寒武统石煤中氟的可淋失比例(平均为29.43%). 相似文献
890.
Ping L Luo Y Wu L Qian W Song J Christie P 《Environmental geochemistry and health》2006,28(1-2):189-195
The mobility of phenanthrene (PHE) in soils depends on its sorption and is influenced by either the existing soil humus or exogenous humic substances. Exogenous humic acids (HAs) were added to soil to enhance the amount of soil organic carbon (SOC) by 2.5, 5.0, and 10.0 g kg−1. PHE desorption of the treated soils was determined at two pH levels (3.0 and 6.0) and temperatures (15 and 25 °C). Soil PHE adsorption was related to pH and the type and quantity of added HAs. Humic acid (HA) and fulvic acid (FA) derived from peat had different effects on adsorption of PHE. Adsorption increased at first and then decreased with increasing quantity of exogenous FA. When the soil solution pH (in 0.005 M CaCl2) was 4.5 or 3.0, the turning points were 2.5 g FA kg−1 at pH 3.0 and 5 g FA kg−1 at pH 4.5. When soil solution pH was 6, the amount of adsorbed PHE was enhanced with increasing exogenous HAs (HA or FA) and amount of adsorption by soil treated with FA was higher than with HA. Adsorption of PHE in the FA treatment at 10.0 g kg−1 was lower than the controls (untreated soil or treatment with HAs at 0 g kg−1) when the soil solution pH was 3.0. This suggests that FA adsorbed by soil was desorbed at low pH and would then increase PHE solubility, and PHE then combined with FA. PHE adsorption was usually higher under lower pH and/or lower temperature conditions. PHE sorption fitted the Freundlich isotherm, indicating that exogenous humic substances influenced adsorption of phenanthrene, which in turn was affected by environmental conditions such as pH and temperature. Thus, exogenous humic substances can be used to control the mobility of soil PAHs under appropriate conditions to decrease PAH contamination. 相似文献