Research on the Low-carbon-high-value Agriculture Technology in the Comprehensive Improvement of Intra-county Environment Pollution——Taking the Development of Cultivation and Breeding Industry in the Ecological Cyclic Agricultural Garden in Shaoshan Irri

The comprehensive improvement strategy of intra-county environment pollution in the city and countryside was searched.By the research method which combined the microscopic view,the macroscopic view with the dynamic perspective,the seriousness of rural water quality,soil and atmospheric pollution in Xiangxiang,Xiangtan and the surrounding areas in Shaoshan irrigated area was revealed.The control measure which was 'four-dimensional pollution in the city and countryside'—— low-carbon-high-value agriculture and the technology innovation was proposed.The low-carbon-high-value technology innovation industrialization demonstration in three parts which included the pre-production,mid-production and post-production deep-processing of cultivation and breeding industry in the ecological cyclic agricultural garden in Shaoshan irrigated area was the driving force.We tried to propel the low-carbon ecological cultivation and breeding industry which included the paddy rice,grass,tree,medicinal herbs and pig,cow,chick,duck,fish.We wanted to relieve the structural unbalance of previous cultivation and breeding industry,'cheap grain hurting the farmers' and the short-leg problem of social-economic-ecological benefit.The results showed that the low-carbon-high-value agricultural system was a poly-generation technology system which promoted the multi-level and grading utilization,saved the energy,reduced the consumption and cleaned the production based on the ecology.

The comprehensive evaluation of China＇s urbanization and effects on resources and environment

This paper constructs a comprehensive evaluation index system for the urbanization level in China in terms of four aspects of urbanization connotation： population, economy, society, and land. A comprehensive measurement is carried out for the Chinese urbanization between 1981 and 2006 based on the Entropy method. The results show that the comprehensive level of urbanization in China has a continuous increase with the major features of economic growth and a rapid evolution of the geographical landscape, followed by population urbanization and then social urbanization of health care standard; the distinguished evolutional characteristics can also be found in each of the subsystems. The integrated evolution of urbanization has a profound effect on the resources, energy and the environment, making the land resources and energy security situation under severe pressure. The environment pressure is also increased further.

Evolution of Industrial Competitiveness Based on Evaluation of Urban Competitiveness of Dongguan City:A Case Study of Songshan Lake High-tech Zone

Based on the theoretical system of urban competitiveness,the evaluation model of urban competitiveness from the perspective of competition and cooperation was established.According to the significance index and explanatory index,the urban competitiveness was divided into urban comprehensive competitiveness(UC),urban internal node competitiveness(NC)and external competitiveness of urban network(EC).The scores and rankings of UC,NC and EC in 2006,2010 and 2015 were obtained by conducting the comprehensive evaluation of the urban competitiveness of Dongguan City with integrated usage of the principal component analysis and Technique for Order Preference by Similarity to an Ideal Solution and the data of other 20 cities in Guangdong province,Hong Kong and Macao.The research showed that the competitiveness of Dongguan City has been greatly improved during the decade of 2006–2015,and the regional cities in Guangdong Province had significant differences,which are reflected in the two dimensions of urban internal node competitiveness(NC)and external competitiveness of urban network(EC).Based on this,this study further analyzed Dongguan’s urban competitiveness from two dimensions of NC and EC,and took Dongguan Songshan Lake High-tech Zone as an example to study how to promote Dongguan’s urban competitiveness from the industrial level.

Spatiotemporal characteristics and driving mechanism of the coupling coordination degree of urbanization and ecological environment in Kazakhstan

When viewed against the backdrop of globalization and the Belt and Road Initiative(BRI),Central Asia has ushered in new development opportunities.However,problems of ecological environment as a consequence of urbanization have begun to act as a constraint on the economic development of the region,the coupling coordination degree between the urbanization and ecological environment in Kazakhstan was analyzed by the coupling coordination degree model.The main controlling factors affecting its development were explored using a geographical detector.Several main conclusions can be drawn.(1)Kazakhstan's urbanization level,ecological environment level,and the coupling coordination degree between urbanization and ecological environment are all on the rise.(2)In terms of the comprehensive urbanization index,the western and eastern states have higher values than the southern and northern states.The spatial distribution pattern of the ecological environment index revealed high values in the eastern and western regions and low values in the central region.(3)The coupling coordination degree among the states of Kazakhstan is mostly at a low-moderate level.The spatial distribution shows that the coordination level of the east,middle,and west of the country is higher than that of south and north.(4)Indicators such as GDP per capita,social fixed asset investment per capita,employment in industry and services(% of total employment),and the number of college students per 10,000 people are important urbanization factors that affect the coupling coordination degree of urbanization and ecological environment.Indicators of farmland areas per capita,availability of water resources per capita,ecological land per capita and forest coverage in the ecological environment subsystem are important ecological environmental factors that affect the degree of coordination between urbanization and ecological environment in Kazakhstan.The interaction of the main elements in the two subsystems has a strong synergy.

全域土地综合整治促进城乡融合的机理与路径

全域土地综合整治促进城乡融合的机理体现为:全域土地综合整治的直接作用对象是土地,土地利用结构的改变会引发城乡产业、人口、基础设施和公共服务、生态资源等的空间分布的调整,进而影响城乡关系,而城乡关系调整的过程也是土地利用形态和结构发生变化的过程。全域土地综合整治首先应以土地为切入点,通过调整城乡空间结构,响应城乡社会、经济、生态环境融合发展的用地需求,然后通过土地要素流动引发城乡产业、人口、资本、技术等要素双向流动,为城乡融合发展提供动力。文章从空间融合、经济融合、社会融合、环境融合四个维度探索土地综合整治促进城乡融合发展的实现路径。

“针灸理论”下甘肃乡村人居环境畸零空间活力提升策略探讨

现阶段,我国乡村振兴战略不断推进,乡村人居环境的提升是实现农村现代化的重要一环。我国乡村建设之初,普遍缺乏具体且细致的规划,导致并未从微观的角度对空间的景观营造进行思忖,从而造成规划与实施之间不匹配,使得空间衔接出现了问题。本研究以此为背景,着眼于亟待解决的甘肃地区乡村规划建设中畸零空间的资源再利用问题,以“针灸式”策略为依据,提出甘肃乡村人居环境中点状、线状、面状畸零空间的活化提升策略,以期为甘肃乡村及其他相关地区畸零空间再利用提供具有理论和实践意义的指导。

城市小流域河道水环境综合治理工作中常见不足及应对建议

城市化进程的不断加快与成熟,也逐步暴露出环境污染严重、生态系统退化的问题。党的十九大提出“绿水青山就是金山银山”一系列重要部署,对城市水土治理提出了更严格的要求。各城市小流域河道水环境综合治理工作虽逐步推进,但受到诸多外界因素影响导致治理工作中仍然存在许多不足。本文采取文献资料法、实践调查法,并结合自身工作经验先简要阐述了城市小流域河道水环境综合治理的意义与原则,而后指出当前城市小流域河道水环境综合治理工作的常见不足,最终回归实际针对不足提出行之有效的建议。

水利工程中给排水施工技术的探讨

随着经济的快速发展,城市的基础设施建设也不断完善,城市给排水工程作为城市基础设施建设中的重要组成部分,在城市功能建设中起着至关重要的作用。在给排水工程施工中,其施工质量对整个工程具有决定性影响,因此施工单位应高度重视给排水工程施工,从多方面入手提高市政给排水施工质量。对市政给排水工程技术进行分析探讨,并提出了相关建议和对策,希望能对我国的市政给排水工程建设有所帮助。

高质量发展背景下首都“花园城市”建设的研究与探索

随着首都减量发展阶段的到来,为推动城市高质量发展、建设和谐宜居城市,北京市即将围绕“花园城市”理念开展建设。文章以花园式街区和街道建设专项为例论述实践经验。落实各级政府规划要求,系统地探索花园城市的建设。花园城市的建设促进城市功能空间与花园生态空间进行有机融合,形成和谐统一的城市形态,赋能首都城市空间多元价值。

海绵城市建设在城市水环境综合整治中的运用分析

为探析海绵城市建设对城市水环境综合整治的应用效果,通过分析海绵城市建设概念及技术方法,并借鉴国内外成功实例,论述海绵城市建设对改善城市水环境质量,推动生态可持续发展的促进作用。该研究通过文献综述、案例分析以及实地考察,梳理海绵城市建设技术路线及管理策略。结果发现,海绵城市建设能够有效地降低雨水径流、提高水资源利用率和城市水环境质量。同时,海绵城市建设面临着技术实施及管理上的难题,需要强化政策引导和公众参与。

武汉市主城区次浅层地下空间利用适宜性评价

随着武汉市主城区地铁以及大型地下综合体的兴建,次浅层(10~30 m)地下空间开发利用成为主城区提高综合承载能力的重点区域。基于武汉市主城区收集的大量钻孔数据,从岩土体条件、水文地质、地质结构与地震效应和不良地质灾害等四方面构建影响武汉市主城区次浅层地下空间开发利用适宜性评价指标体系。采用指数标度法及最优判断矩阵对层次分析法进行改进,确定各评价指标权重值。结合MapGIS平台进行二次开发,运用模糊综合评判法计算武汉市主城区适宜性评价结果值,结果表明:适宜性优、良、中及差区域的面积占比分别为7.14%、55.62%、26.69%及10.55%,该评价结果可为武汉市主城区地下空间开发利用前期规划提供参考。

城市内河入河污染物定量控制策略探讨

城市内河水环境与城市居民生活幸福指数息息相关。在幸福美丽河湖的背景下,水环境治理的目标已由消除黑臭水体提高至全方位水质保障,提升水体的水质稳定性成为新时代河湖治理面临的挑战之一。文章以南方某入江一级支流约17.0 km长的城市区间段为研究对象,以5条汇入的主要城市内河流域为边界划分控制单元,分析2020年研究河段化学需氧量、氨氮和总磷3个指标的全年时空变化特征,确定超标次数较多的氨氮为主要水质控制指标,在排水管网分析的基础上,发现主要污染源为雨天城市面源污染。在雨水径流实际水质监测数据的指导下,根据各控制单元内雨污混接比例,分解各单元污染贡献比,采用容量控制方法,以控制断面水质达标为目标计算水环境容量,反推最大允许排污量并计算分配各控制单元的污染物削减率。经计算,在对各控制单元内的存在雨污混接区域的雨水按照年径流总量控制率76%标准进行控制后,可满足研究区间河道水质稳定在地表Ⅲ类水的需求,为系统化治理措施的规模确定提供量化指导。

公园城市理念下的城市热环境改善与优化设计研究——以成都市为例

本研究以成都市为例,探讨了公园城市理念下的城市热环境改善与优化设计。首先分析了城市热环境的组成及形成原因,认识到城市化进程中人类活动、建筑热量排放和缺乏绿化空间等因素对城市热环境产生的重要影响,并指出存在的问题和不足。在充分理解土地利用关系与城市热环境之间的联系后,研究发现,通过合理规划城市空间结构、采用屋顶光伏板结合种植技术来增加屋顶绿化、增设城市公园以提高地面反照率,降低人类活动产生的热量,可以缓解城市的热岛效应,改善城市热环境。本研究提出了一系列改善城市热环境的方法和城市热环境优化设计策略,可以为城市规划和建设提供重要参考。通过优化城市热环境,可以提高人居环境的舒适度和城市生态环境的质量。展望未来,还需要进一步研究和探索,以推动城市发展与环境保护的协调发展。

简述城市水污染控制和水环境综合整治

随着经济社会的发展,我国各地城市化进程不断加快,发展形势一片良好。但与此同时,城市水环境污染问题也越来越突出,给城市形象带来了不良影响,也制约了城市的可持续发展。因此,各地应将水污染控制和水环境综合治理工作放在重要位置,针对城市水环境现状,有重点、有步骤地展开相关治理工作。本文对城市水环境现状和治理过程中存在的问题进行了详细分析,并探讨了有效的污染控制和综合整治措施,以促进城市生态平衡,为居民创造良好的生活环境。

沙田镇西太隆河流域综合整治工程设计方案研究

东莞市经济快速发展的同时,西太隆河流域内水环境建设滞后。为改善流域内生态环境,亟需实施流域综合整治工程,工程主要分为水安全、水环境、水景观和智慧水务4个部分。水安全方面因地制宜建设复合型生态护岸;水环境方面对淤积河道进行清淤疏浚;水景观方面通过打造节点景观和万里碧道来构建生态廊道;智慧水务方面着力构建流域立体水务信息采集系统。通过对不同子项工程的治理措施及设计方案进行研究,工程实践表明,项目的实施可有效改善流域环境,促进宜居水岸打造。

城市大气环境质量改善的途径与节能减排的思考

本文探讨了城市大气环境质量改善的重要性及途径,着重分析了节能减排策略的思考。通过对城市大气环境现状、质量改善的重要性以及实施节能减排策略的途径进行综合论述,旨在为相关决策者提供参考。尽管城市大气环境问题日益严峻,但通过加强法规政策落实、科技创新、城市规划和建设管理等手段,以及改善能源结构、工业生产、交通运输、建筑设计和公众参与等方面,有望有效推动城市环境质量的提升。

南四湖滕州片区生态环境保护管理经验

滕州市紧邻南四湖,为南四湖湖东重要区域,其生态环境保护对南四湖的“复苏河湖生态环境”意义重大。文章总结归纳滕州市在河湖生态环境保护方面的举措和管理经验,为提高河湖管护水平、进一步复苏南四湖生态环境,提供借鉴和参考。

住宅园林绿地系统对城市环境改善的影响分析

低碳城市发展是应对当前气候压力和提升城市可持续性的重要策略。本文采用案例分析、模型模拟和问卷调查等方法,通过分析绿地系统在减少温室气体排放、改善城市微气候、提升生物多样性及增强城市居民健康和福祉中的作用,揭示绿地系统对城市环境质量提升的积极影响。结果表明,系统性的绿地规划和管理是实现低碳城市发展的关键途径之一,对促进城市环境的持续改善具有显著效果。

长江流域典型城市水生态环境特征解析及综合整治对策

以长江流域典型城市为研究对象,估算长江干流、主要支流和通江湖城市COD、氨氮、TN和TP污染排放负荷,梳理典型城市水环境质量、水生态、水资源和水安全特征。结果表明,长江流域内56个城市COD、氨氮、TN、TP的排放量分别为193.78万、15.57万、31.01万和2.18万t/a,流域内大部分城市主要污染源为城市生活源,但工业源和城市面源不容忽视。近年来,流域内城市面源排放负荷占比升高,部分城市水生态系统遭到破坏,存在水质型和资源型缺水、水资源开发利用不合理、非常规水利用率低等问题,导致部分城市仍存在水生态环境安全风险。在此基础上提出了流域内城市“十四五”时期水生态环境综合整治对策建议。

长江流域湖北片区典型城市水生态环境问题解析及整治对策

为了改善长江流域湖北片区城市水生态环境,从水环境、水资源、水生态和水安全4个方面解析了片区内城市水生态环境特征及问题,并对主要污染源的污染负荷进行分析和估算。结果表明,生活源是片区内城市的主要污染源,对片区化学需氧量、氨氮、总氮和总磷的贡献率分别为68.75%、76.58%、75.82%和80.46%,片区内城市存在管网建设滞后,污水处理厂超负荷运行,工业磷化工、磷矿、磷石膏(“三磷”)污染问题突出,水资源供需矛盾显著,水体富营养化严重和水安全保障能力不足等问题。针对以上问题,结合片区内城市的实际情况,分别从以下几方面提出水生态环境综合整治对策:生活源治理需加大管网建设力度,对污水处理厂进行提质增效;工业源治理重点解决“三磷”问题;水资源方面,坚持以水定城、量水发展,构建节水型城市;水生态方面,加强河湖缓冲带建设,恢复生物多样性;水安全方面,加强风险管控,建立健全应急预警机制等。