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221.
济南市水资源主要存在着地下水限量开采、地表水严重不足、客水利用受到制约等问题。以济南市创建水利部水生态文明城市为背景,研究济南市水生态文明城市建设与产业布局优化,分析了济南市产业布局不合理给水资源保护和利用带来的严峻挑战,提出了以济南市水生态保护为目标的产业优化布局方案,建议大力发展水生态文明城市建设相关产业。 相似文献
222.
Lv Xiaoyu Leng Yanqiu Wang Rongyao Wei Yan Ren Xiaohua Guo Weilin 《Environmental science and pollution research international》2022,29(23):34464-34474
Environmental Science and Pollution Research - Ferrocene-based metal–organic framework with different transition metals (M-Fc-MOFs, M?=?Fe, Mn, Co) was synthesized by a simple... 相似文献
223.
Zhang Tian Jiang Bo Xing Yi Ya Haobo Lv Mingjie Wang Xin 《Environmental science and pollution research international》2022,29(12):16830-16859
Environmental Science and Pollution Research - Microplastics, as emerging pollutants, have received great attention in the past few decades due to its adverse effects on the environment.... 相似文献
224.
ICCLP: An Inexact Chance-Constrained Linear Programming Model for Land-Use Management of Lake Areas in Urban Fringes 总被引:3,自引:1,他引:2
Lake areas in urban fringes are under increasing urbanization pressure. Consequently, the conflict between rapid urban development
and the maintenance of water bodies in such areas urgently needs to be addressed. An inexact chance-constrained linear programming
(ICCLP) model for optimal land-use management of lake areas in urban fringes was developed. The ICCLP model was based on land-use
suitability assessment and land evaluation. The maximum net economic benefit (NEB) was selected as the objective of land-use
allocation. The total environmental capacity (TEC) of water systems and the public financial investment (PFI) at different
probability levels were considered key constraints. Other constraints included in the model were land-use suitability, governmental
requirements on the ratios of various land-use types, and technical constraints. A case study implementing the system was
performed for the lake area of Hanyang at the urban fringe of Wuhan, central China, based on our previous study on land-use
suitability assessment. The Hanyang lake area is under significant urbanization pressure. A 15-year optimal model for land-use
allocation is proposed during 2006 to 2020 to better protect the water system and to gain the maximum benefits of development.
Sixteen constraints were set for the optimal model. The model results indicated that NEB was between $1.48 × 109 and $8.76 × 109 or between $3.98 × 109 and $16.7 × 109, depending on the different urban-expansion patterns and land demands. The changes in total developed area and the land-use
structure were analyzed under different probabilities (q
i
) of TEC. Changes in q
i
resulted in different urban expansion patterns and demands on land, which were the direct result of the constraints imposed
by TEC and PFI. The ICCLP model might help local authorities better understand and address complex land-use systems and develop
optimal land-use management strategies that better balance urban expansion and grassland conservation. 相似文献
225.
226.
Dechlorane Plus(DP), a flame retardant used as an alternative to decabromodiphenylether, has been frequently detected in organisms, indicating its bioaccumulation and biomagnification potential in aquatic and terrestrial species. However, little data is available on the bioaccumulation of DP in amphibians. Dechlorane Plus and its analogs(DPs) were detected in the liver, muscle and brain tissues of wild frogs(Rana limnocharis), which were collected from an e-waste recycling site, Southeast China. DP, Mirex, Dec 602 and a dechlorinated compound of DP(anti-Cl11-DP) varied in the range of 2.01–291, 0.650–179, 0.260–12.4, and not detected(nd)–8.67 ng/g lipid weight, respectively. No difference of tissue distribution was found for syn-DP, Mirex and Dec 602 between the liver and muscle tissue(liver/muscle concentration ratio close to 1, p 0.05). However, higher retention was observed for anti-DP and anti-Cl11-DP in the frog muscle relative to the liver tissue(liver/muscle concentration ratio 1, p 0.05). Additionally, the blood-brain barrier was found to work efficiently to suppress these compounds entering brain tissues in this species(liver/brain concentration ratio 1, p 0.05), and the molecular weight was a key factor impacting the extent of the blood-brain barrier. Compared to levels in the muscle and brain tissue, a preferential enrichment of syn-DP was observed in the liver tissue, suggesting the occurrence of stereo-selective bioaccumulation in the wild frog. 相似文献
227.
Cross-linked Fe(III)-chitosan composite (Fe-CB) was used as the adsorbent for removing perchlorate from the aqueous solution. The adsorption experiments were carried out by varying contact time, initial concentrations, temperatures, pH, and the presence of co-existing anions. The morphology of the adsorbent was discussed using FT-IR and SEM with X-EDS analysis. The pH ranging from 3.0-10.2 exhibited very little effect on the adsorption capability. The perchlorate uptake onto Fe-CB obeyed Langmuir isotherm model. The adsorption process was rapid and the kinetics data obeyed the pseudo second-order model well. The eluent of 2.5% (W/V) NaC1 could regenerate the exhausted adsorbent efficiently. The adsorption mechanism was also discussed. 相似文献
228.
229.
岩土震害是指由于岩土体在地震时产生的不稳定所导致的场地和地基破坏,岩土震害的研究对减轻震后工程结构破坏具有重要的意义。简要回顾了岩土震害的研究历史,重点介绍了近年来这一领域的相关情况。分别介绍了砂土液化,软土震陷,砂土液化侧向位移,岩土震害引起的其他次生灾害这四个方面在形成机制、判别方法、防治措施、数值模拟、灾害预测等领域内的研究内容和成果。在论述研究进展的同时,对有关研究内容进行了评述和讨论,并对今后的研究工作提出了一些建议。 相似文献
230.
摘要:石油开发作业和储运过程,石油化工储运与排放都会产生含油废物,也叫石油污染土壤,其中含油高的称为含油污泥。它们的渗透一是直接污染地表水体,还随雨水冲刷和水体流动携带而污染“经流区域”生态水体;二是污染土地。它们都构成对生命健康的威胁,所以进行无害化环保治理是很有必要的。文章主要介绍了污泥的组成及处置工艺。 相似文献