Coordination of Urbanization and Water Ecological Environment in Shayinghe River Basin,China

During the rapid industrialization and urbanization of China,urban agglomeration in river basin areas raises the problems of over-use of water resources and pollution of the water environment.Related research in China has mainly focused on the conflicts among economic growth,urban expansion and water resource shortages within admin-istrative boundaries.However,water environments are much more dependent on their physical boundaries than their administrative boundaries.Consistent with the nature of water environment,this study aims at analyzing coordination relationships between urban development and water environment changes within physical river basin boundaries.We chose the Shayinghe River Basin,China,as our case study area which is facing serious challenges related to water en-vironment protection.Then we classified 35 county-level administrative units into upstream,midstream and down-stream regions based on their physical characteristics;analyzed the coordination degree of urban agglomeration using the Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) method;and constructed cooperative models using the Linear Programming (LP function) to simulate four scenarios of the coordination relationship be-tween urban population increase and water environment protection based on existing water resources and water pollu-tion data.The results show that the present coordinative situation in Shayinghe River Basin is not sustainable.In gen-eral,more than 50% administrative units are in the bad coordinative situation.In particular,the downstream region is under worse condition than the upstream and midstream regions.Cooperative models in scenario analyses indicate that the population scale set in existing urban master plannings is not coordinated with the water environment protection.To reach the goal of regional sustainable development,the total population needs to be controlled such that it will re-main at 4.5×10 7 or below by 2020 given the capacity of water environment.

The Research on Land-Use Change and Ecological Environment Effect of Urban Landscape in China

The rapid expansion of urban construction land has become the major characteristic of urban land-use change in China today. Meanwhile, the rapid urbanization process has led to the great changes of urban landscape in China, and it also has had certain impacts on environmental factors such as climate, soil, hydrology, biodiversity, etc., then it has made the overall ecological environment deteriorated. This study is based on the summary and analysis of research on land-use change and ecological environment effect of urban landscape in recent 20 years in China, and it aims at providing scientific bases and theoretical supports for the planning and construction of urban landscape, the sustainable land-use of city and the protection of ecological environment in China.

Evaluation of Coordinated Development of Urbanization and Ecological Environment in the Efficient Ecological Economic Zone of the Yellow River Delta

Based on the statistical data of urbanization development level and ecological environment in the Yellow River Delta during 2009-2014,a comprehensive index system for the coordinated development of urbanization and ecological environment was established to evaluate the coordinated development level. The results showed that the coordinated development level of urbanization and ecological environment in the Yellow River Delta was generally high during 2009-2014. The development level of urbanization was higher than that of ecological environment on the whole,that is,the development of ecological environment lagged behind. The development of urbanization in the region was relatively slow during 2009-2011 but rapid during 2012-2014. The development level of ecological environment was relatively stable and always increased.

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.

Analysis on Ecological Benefits of Urban Wetlands and Protection Measures with a Case of Nansha Wetland

Nansha wetland plays a crucial role in ecological balance of the Pearl River Delta or even Guangzhou. The research, based on researches available, analyzed ecological benefits of Nansha wetland and proposed protection measures in order to better protect urban wetlands and achieve sustainable development of ecological resources of Nansha wetland.

Research on Ecological Livable Urban Construction in Small and Medium Cities of China——A Case Study of Huaihua City

The paper has analyzed the concept of ecological livable city,considered that small and medium cities as the major pattern of China's urbanization are more likely to become ecological livable cities compared with large cities.Based on the actual situation of Huaihua City,it has pointed out its advantages in transport,ecology,foundation and national characteristic,and analyzed existing problems in the construction of ecological livable city from the perspective of urban eco-environment.It considers that its urban ecological planning is to be perfect,urban environment pollution is still serious and people's consciousness for environmental protection is to be improved.On this basis,relevant suggestions have been proposed for ecological livable urban construction in Huaihua City,emphasizing it should perfect urban ecological planning,enhance environmental pollution treatment,intensify environmental protection education,and improve people's consciousness for environmental protection.

Planning and Ecological Landscape Design of Urban Constructed Wetland

In addition to purifying water, constructed wetland has become an important ecological landscape in city. The characteristics and key design points of constructed wetland under the ecological principles were explored, taking the Jingyue Lake in Zhongxiang City, Hubei Province for example, treatment processes were designed for different infl ow waters on the basis of site analysis to facilitate the water environment control and ecological landscape construction, ecological theories were applied to explore functional layouts and landscape designs of wetland, to build a favorable ecological environment of urban wetland and design outstanding wetland ecological landscapes.

Impacts of Suburbanization on Urban Eco-environment of Xi'an in China

Suburbanization in large cities is an important phenomenon in the process of urbanization development in China in recent decades,which plays a very important role in promoting city development,whereas some side effects on the eco-environment appeared at the same time.This paper,taking Xi'an City in China as a case study site,analyzed the features of population suburbanization and industry suburbanization and pointed out the impacts of suburbanization on urban eco-environment.Based on the research,suggestions of countermeasures for urban planning and municipal management of Xi'an City in protecting urban eco-environment and conserving natural ecology were put forward in the end.

Characteristics and Trends of Urban Waterfront Human Settlements Based on CiteSpace

Urban waterfront human settlements have gradually become a hot topic for research in recent years.Using CiteSpace,597 publications from 2017 to 2023 that were retrieved from the Web of Science were analyzed and sorted out,and the following characteristics were found:(1)The research hotspots transitioned from thermal comfort evaluation to the functional mechanism of water bodies,and then to the impact on the environment and residents’behavior.(2)The integration of disciplines has promoted the diversification of perspectives on urban waterfront human settlements,and the content has become more concentrated in interdisciplinary fields.Research on corresponding technology and methods of urban waterfront human settlement has improved,and so has the extensiveness of the experiments.(3)The research on urban waterfront human settlement from the perspective of ecology has been improving.The research focuses more on the harmonious coexistence of ecological and cultural values and human beings.

A Bibliometric Analysis of Chinese Ecological and Environmental Research on Urbanization

Based on an urbanization research database,a bibliometric analysis of Chinese ecological environmental research on urbanization was conducted that examined output,focused fields,topics,theories and methods.Results show that research output in this field has been increasing since 2005.Land and industry fields in resource research,economics in ecological research,and climate and urban environments in environmental research have been studied from 1992–2011.Keywords analysis discovered that ＂Land Use＂ and ＂Heat Island Effect＂ were major keywords,making up 0.15% and 0.09% of the total frequency,respectively.＂Heat Island Effect＂ and ＂Climate Change＂ were the most recent popular keywords.Main theories were derived from ecology,mathematics,resource environmental economics and environmental science.Ecological footprint has been a core theory since 2002.The stochastic impacts by regression on population,affluence and technology model（STIRPAT）,Environmental Kuznets Curve（EKC）,and slope,land use map,excluded area,urban area,transportation map and hillside area model（SLEUTH） are the latest popular theories.During 1992–2011,the main research methods can be divided into four groups： statistics（65.17%）,systems（13.11%）,mechanisms（11.79%） and evaluation（9.93%）.Grey System Analysis from system methods and rescaled range（R/S） analysis from evaluation are the latest popular methods.Topics from macro subfields,including land use,heat island effects,water resources and the agricultural ecological environment received more attention than micro subfields such as urban environmental health problems.As urbanization problems evolve,resource environmental economic comprehensive models will advance with modeling progress and some models,such as STIRPAT and land use change simulation models,will be developed for evaluation and simulation of the ecological environmental impacts of Chinese urbanization.

Using Support Vector Machine to Predict Eco-environment Burden:A Case Study of Wuhan,Hubei Province,China

Objective The human socio-economic development depends on the planet＇s natural capital. Humans have had a considerable impact on the earth, such as resources depression and environment deterioration. The objective of this study was to assess the impact of socio-economic development on the ecological environment of Wuhan, Hubei Province, China, during the general planning period 2006-2020. Methods Support vector machine （SVM） model was constructed to simulate the process of eco-economic system of Wuhan. Socio-economic factors of urban total ecological footprint （TEF） were selected by partial least squares （PLS） and leave-one-out cross validation （LOOCV）. Historical data of socio-economic factors as inputs, and corresponding historical data of TEF as target outputs, were presented to identify and validate the SVM model. When predicted input data after 2005 were presented to trained model as generalization sets, TEFs of 2005, 2006,…, till 2020 were simulated as output in succession. Results Up to 2020, the district would have suffered an accumulative TEF of 28.374 million gha, which was over 1.5 times that of 2004 and nearly 3 times that of 1988. The per capita EF would be up to 3.019 gha in 2020. Contusions The simulation indicated that although the increase rate of GDP would be restricted in a lower level during the general planning period, urban ecological environment burden could not respond to the socio-economic circumstances promptly. SVM provides tools for dynamic assessment of regional eco-environment. However, there still exist limitations and disadvantages in the model. We believe that the next logical step in deriving better dynamic models of ecosystem is to integrate SVM and other algorithms or technologies.

Application of Earth Art in Landscape Reconstruction of Urban Industrial Wasteland

The ecological environment of industrial wasteland has been severely damaged,and problems such as environmental pollution,sharp decline in biodiversity,and ecological damage frequently occur.Therefore,reasonable renovation of industrial wasteland has become an urgent issue to be resolved.Earth art originates from nature and integrates with industrial wasteland,which plays a guiding role in promoting the upgrading and transformation of industrial wasteland landscapes,and is of great significance for the healthy development of urban environment,improving urban human settlements,and other issues.The combination of land art and urban industrial wasteland landscape transformation can guide the healthy development of urban environment.

基于CVM的城市河道改造生态环境价值评估

从城市河道改造的生态环境价值评估角度,分析了条件价值评估法(CVM)在城市河道改造生态环境价值评估中的应用原理和依据,构建了基于CVM的城市河道改造生态环境价值评估模型,并以上海市黄浦江加高堤防替代建闸方案为例对黄浦江河道改造的生态环境价值进行了评估。结果表明:期望均值法和三相定价法计算得到的总支付意愿分别为120.6亿元/a和118.5亿元/a,总受偿意愿为130.8亿元/a和151.2亿元/a,总受偿意愿与总支付意愿的比值大于1;仅从生态环境价值方面看,相对于加高堤防方案,民众更希望政府投资建闸。

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.

成渝城市群“三生”用地空间演化及其生态环境效应研究

运用土地利用转移矩阵、生态环境质量指数、生态贡献率和冷热点分析等对成渝城市群1990—2020年“三生”用地空间变化及其生态环境效应进行分析。结果表明:(1)生产用地和生态用地面积减少,生活用地面积增加,各地类之间的转型以生产用地和生态用地相互转型为主,其次是生产用地和生活用地之间的转型,生态用地和生活用地的相互转型最少;(2)城市群整体生态环境质量呈缓慢下降趋势,分布具有中部凹陷、两边凸起的特征;(3)人地关系的改变导致成渝城市群各时段冷热点分布空间差异较大,2000年前后生态环境质量变化的冷点区面积大于热点区面积。因此,要加大耕地保护力度,稳定现有生态用地面积,提高土地利用效率,以实现生态和经济发展双赢。

基于街区小气候环境冬夏协同优化的城市绿地生态网络精准修复

越来越多城市绿地生态网络建设进入存量更新和结构性优化并存发展的阶段,生态安全优先基础上如何进一步提升城市绿地生态网络的多种生态系统服务功能是当前风景园林实践研究的重要议题。应对全球气候变化、极端天气多发导致的人居环境宜居性下降问题,目前基于气候适应的城市绿地生态网络规划关注促进自然通风以缓解夏季热岛效应,尚忽视了其冬季可能带来的负效应。从气候调节视角切入,探讨城市绿地生态网络在协同冬夏季小气候环境中的低效空间识别与精准修复技术方法。以江苏省昆山市密集城区的189个街区单元为研究对象,通过遥感反演的方法对其冬、夏季小气候环境进行分析,聚类获得7类小气候特征街区。之后,叠加现状绿地生态网络与计算流体力学模拟风环境结果,提取现状适于通风的生态廊道,从宽度、方向、类型等方面分析其潜在通风效能,耦合街区冬夏小气候环境特征,识别研判现状绿地生态网络在冬夏温湿环境调节上存在的低效问题,并提出冬夏协同的精准修复策略,为优化人居环境宜居性、提升城市绿地生态网络生态系统服务综合效能提供技术参考。

长江经济带旅游业-新型城镇化-生态环境耦合协调的时空动态演进及影响因素研究

以长江经济带11省市为研究对象,借助熵权-TOPSIS法和耦合协调度模型计算其2010-2021年旅游业、新型城镇化、生态环境系统(简称TUE系统)的发展水平和耦合协调度,并用标准差椭圆、地理探测器等分析其演化特征和驱动因素。结果表明:各省区TUE系统发展水平波动上升且空间差异显著,大体呈“三级阶梯状”;TUE耦合状态处于不断变化中,时间上呈平稳上升趋势、空间上呈东部和西北部高、中部和西南部低的“U”型分布格局;标准差椭圆及重心呈“东北-西南”格局,紧缩态势明显;核密度曲线均向右移动,各省区协调逐渐趋优,但省际内部差异明显;TUE系统耦合协调的空间差异受对外开放、市场需求等因子共同影响,交互作用呈双因子增强和非线性增强特征。

黄河“几”字弯都市圈资源环境承载力与经济发展耦合协调研究

在生态文明建设理念下,如何实现生态脆弱区资源环境与经济的协调发展,已成为我国亟待解决的问题之一。以典型生态脆弱区黄河“几”字弯都市圈21个地级市为例,基于2005年、2010年、2015年、2020年的资源环境与经济发展数据,运用熵权TOPSIS法分析资源环境承载力状况,并引入耦合协调度模型揭示资源环境承载力与经济发展水平耦合协调关系及其时空演变特征,结果表明:黄河“几”字弯都市圈资源环境承载力呈波动上升趋势,区域差异显著;资源环境承载力与经济发展水平的耦合协调度整体逐渐趋向于更高程度的耦合;通过莫兰指数分析发现,黄河“几”字弯都市圈资源环境承载力与经济发展水平耦合协调度为显著空间正相关。

陕西省城镇化与生态环境质量时空交互关系研究

[目的]推进具有中国特色的城镇化,生态安全是必不可少的环节。同时城镇化是影响区域生态安全格局的重要因素,厘清城镇化与生态环境质量之间的关系,为陕西省城镇化开发和促进区域生态保护与高质量发展提供决策参考。[方法]以陕西省为研究对象,基于栅格尺度构建城镇化与生态环境质量评价体系,在分析2000—2020年每隔五年陕西省城镇化与生态环境质量时空格局演变的基础上,采用耦合协调度模型和双变量空间自相关模型剖析了二者耦合关系及时空变化特征。[结果](1)2000—2020年间,陕西省城镇化水平总体呈现稳步上升趋势,综合城镇化率提高了111.45%。整体RSEI均值呈稳步上升趋势,生态环境呈现出好转的态势,但地区间的差异依旧显著,整体呈现“北低南高”的分布格局。(2)陕西省城镇化与生态环境质量耦合协调度呈波动上升趋势,陕西省内部各县域的生态环境与城镇化耦合协调发展长期存在明显差距,但随着时间推移,发展协调的地区逐渐增多。空间格局上以关中地区为核心总体呈现“中部高两边低”的分布特征。(3)陕西省城镇化与生态环境质量的耦合协调存在一定短板,相比之下陕北地区城镇化与生态环境质量耦合协调呈现相对滞后的情况。[结论]2000—2020年陕西省城镇化与生态环境质量的耦合协调关系存在明显差距但整体呈变好趋势,建议在城镇化的道路上,陕西省能够强化绿色生态发展能力、补齐生态短板、因地制宜,优化区域发展空间布局,加快形成区域良性互动格局,制定出更加科学合理的乡村振兴政策。

2010—2020年中国市域城镇化与生态环境协调状态的空间分异及影响因素

城镇化与生态环境协调平衡是提升城市品质的重要举措,也是推进新型城市建设的内在要求。基于构建的城镇化与生态环境系统综合评价指标体系,引入耦合协调模型对2010—2020年中国市域城镇化与生态环境系统的耦合协调度进行测度并分析其影响因素。结果表明:(1)从空间分布格局来看,城镇化发展水平整体呈现京津冀、长三角、珠三角地区领先,成渝、中部地区中等,西南、西北地区相对落后的分布特征;生态环境建设水平呈现出“南高北低,多点开花”的分布特征。(2)从空间关联格局来看,城镇化发展水平和生态环境建设水平皆呈现明显的集聚现象,且以HH、LL区分布为主。其中城镇化发展水平显著LL区主要在西部地区集中分布,大范围低值集聚态势明显,反映出该地区城镇化有待进一步发展;生态环境建设水平显著HH区主要在东南地区集中分布,显著LL区主要在西部和东北地区,反映出广大西部和北方地区的生态环境欠佳。(3)从耦合协调度来看,两大系统之间的磨合作用持续向好,轻度失调及以下协调发展类型的城市数量不断下降,整体迈入转型发展阶段。在空间分布上东部沿海地区整体的耦合协调度水平高于内陆地区。从城镇化与生态环境耦合协调关系看,在研究期总体上呈均衡发展状态,但是有向生态环境滞后型发展趋势。在空间分布上呈南-北差异化格局,2020年生态环境滞后型南北方城市之比为4∶6。(4)从影响因素看,城镇化状态、城市和谐状态、城市总体生态状况、城市对生态环境治理投入程度、城市绿色低碳建设程度以及水资源利用情况这几个方面均有重要解释作用。