Coordination of urbanization and cultivated land resources in Guangdong-Hong Kong-Macao Greater Bay Area:A case study of Guangzhou City

Guangzhou,a significant hub city in the Guangdong-Hong Kong-Macao Greater Bay Area,has seen fast social and economic growth as well as steady progress in the degree of urbanization.This research,taking Guangzhou city as an example,aims to provide an understanding of how land resources,urbanization,and spatial planning are coordinated in the study area.It also aims to explore how the coordination degree of land resources,urbanization,and spatial planning changes over time.It seeks to provide effective suggestions for land resource protection,national spatial planning,and urban transformation development to promote the coordinated development of the Guangdong-Hong Kong-Macao Greater Bay Area into a world-class Bay Area.

A Study of Coupling Coordination between Marine Economy and Land Economy Based on Gear Model

Based on the construction of evaluation index system of marine-land economy system,this paper analyzes the coupling coordination between marine economy and land economy. The coupling coordinative model is used to analyze the coupling coordinative degree of the marine economy and land economy. The results show that from 2002 to 2012,the marine economy and land economy coupling degree was high and it achieved coordination from disorder gradually,resulting in mutual promotion and common development of marine economy and land economy.

Evaluation of Overall Coordination of Urban and Rural Land Use in Xiangtan City

Based on regional characteristics of Xiangtan City and in line with relevant principle of overall coordination of urban and rural land use,this paper builds an evaluation system for overall urban and rural land use in Xiangtan City. With weight of each index determined by Analytic Hierarchy Process,it makes quantitative analysis of overall urban and rural land use of Xiangtan City in recent 8 years. Finally,it proposes feasible recommendations for overall coordinated development of urban and rural land use in Xiangtan City according to current land use situations.

The Coordination Effect of Marine and Land Resources Carrying Capacity of Coastal Areas in China

The carrying capacity of marine and land resources is one of the indicators to measure the sustainable development level of coastal areas,reflecting the supporting capacity of the ecological environment for human activities and the impact of human activities on the regional environment.This paper establishes an evaluation index system to determine the evaluation value of the carrying capacity of marine and land resources in China’s coastal areas,the evaluation index of marine and land resources supply capacity(economic and social development demand)subsystem,and the degree of coordinated development of the subsystems in 11 coastal areas from 2006 to 2017.The results showed that the average supply and demand capacity of the two subsystems in each region is not high;the average demand level of economic and social development is higher than the supply capacity of marine and land resources;the carrying capacity of marine and land resources is slightly overloaded in most areas;the collaborative development between the supply and demand subsystems is barely coordinated with moderate imbalance;most regions need to move in the direction of green development to ensure the supply capacity of marine and land resources.

Coordinated Development of Land Use and Ecological Environment in Hefei Economic Circle

From the land use and ecological environment of Hefei Economic Circle,this paper established two sets of subsystem evaluation indicator system. It separately determined the weight coefficient of indicators in two indicator system. Using the coordination degree model,it made a scientific evaluation and analysis of coordinated development of land use and ecological environment in Hefei Economic Circle. Finally,on the basis of analysis results,it came up with pertinent recommendations for coordinated development of land use and ecological environment in Hefei Economic Circle.

Research on the coordinated utilization of land resource in the intergrated economic region of industry, farming and grazing-a case study of Baotou city in Inner Mongolia

Baotou City is an industrial city developed in the farming-grazing transitional zone in northern China. The development of industry, farming and grazing is very fast. It has become a typical intergrated economic region of industry, farming and grazing. Based on the analysis of utilization of land resources, this paper points out the main conflicts and problems on the utilization of land resources in the city, and puts forward a corresponding proposal.

Application of Case-Based Reasoning to Intelligent Support System for Coordinating Land Conflicts

To establish the institutional mechanism for land conflict coordination in China, a case-based reasomng system is developed as an intelligent support and effective manner to resolve such issues. The establishment of the case library is discussed, previous land conflict cases are archived in a structural representation format for retrieval, and the similarity algorithm is adopted to compare the case features. Group tests show a good classification performance, which reveals that the system is feasible.

Coordinative Development Between Land Use Change and Regional Population-Resources-Environment-Development System—A Case Study of Jiangsu Province

Land use change has significant influence on the operation of the PopulationResources-Environment-De-velopment (PRED) System. Moderate land use is the key factor to ensure the coordinative and sustainable development between land use and PRED system. Based on the internal relationship between land use and PRED system, a PRED evaluation index system and a Press-Status-Response (PSR) model were established in this study. According to the expounding on the mechanism of the PSR model, we investigated the coordinative development between the changes of regional land use and PRED system taking Jiangsu Province as an example. The results showed that the orders of the Synthetic Index of Land Use (SILU) and the Variation of PRED Index (VPI) in Jiangsu are both the southern Jiangsu>the central Jiangsu>the northern Jiangsu. A cubic curve model was used to fit the relationship between the VPI and SILU. The inflection point of VPI was situated in 5.0 of SILU. When SILU was below 5.0, VPI increased with SILU, which will be helpful to the coordinative development between land use and PRED system. Based on those results, it is suggested that the land use degree of the southern Jiangsu, especially that of Nanjing City, should be moderately controlled at present, while land resources of the central Jiangsu and the northern Jiangsu should be further exploited.

Evaluation and Driving Force Analysis of Cultivated Land Quality in Black Soil Region of Northeast China

Cultivated land is an important natural resource to ensure food,ecological and economic security.The cultivated land quality evaluation(CQE)is greatly significant for protecting and managing cultivated land.In this study,320 counties in the black soil region of Northeast China(BSRNC)represent the research units used to construct the CQE system measuring the soil properties(SP),cultivated land productivity(CLP),ecological environment(EE)and social economy(SE).The total of 19 factors were selected to calculate the integrated fertility index(IFI)and divided into grades.Simultaneously,we used the coupling coordination degree model to comprehensively analyze the spatial pattern of the cultivated land quality(CLQ)in the BSRNC,and use the structural equation model(SEM)to analyze the driving mechanism.The results show the following:1)The CLQ of 262 counties in the BSRNC is in a state of coupling and coordination,and the coupling and coordination degree presents a spatial distribution pattern of‘high in the southwest and northeast,low in the northwest and southeast’.The coordinated development degree of 271 counties is between 0.4 and 0.6,which is in a transitional state between coordination and disorder.2)The CLQ in the BSRNC is generally good,with an average grade of 3.High-quality cultivated land accounts for 58.45%of all counties,middle-and upper-quality cultivated land accounts for 27.05%,and poor-quality cultivated land accounts for 14.49%.3)The SEM analysis shows that the SP,CLP,EE,and SE all influence the CLQ.Among them,the SP has the largest driving force on the CLQ,while the SE has the smallest driving force on it.The results confirm that the main factors affecting the evaluation results are crop productivity level,normalized difference vegetation index,ratio vegetation index,difference vegetation index,and organic carbon content.When implementing protection measures in counties with a low CLQ,considering a balanced coordination of multiple systems and reasonably controlling the quality degradation are important.This study provides the current situation and driving factors of the CLQ in the BSRNC and will play an important role in black soil governance and utilization.

Evaluating rural sustainable land use from a system perspective based on the ecosystem service value

Rural sustainable land use(RSLU) is important to China’s implementation of the UN 2030 Agenda for Sustainable Development Goals and the goals of rural revitalization strategy in China. Research on RSLU is key to understanding the impact of human activities on rural sustainability. This paper explored the evaluation method of RSLU from a system perspective based on the ecosystem service value(ESV). Three systems were proposed for consideration when conducting this evaluation method. One was the sustainability of the land system, the other was the sustainability of the ecoeconomic system, and the rest was the sustainability of the land-eco-economy system. Indicators including(1) land use intensity and land system stability,(2) gross domestic production(GDP), ESV, and the eco-economic harmony degree(EEHD), and(3) coupling degree and coupling coordination degree were used to analyze the sustainability of the land, eco-economic, and landeco-economic systems, respectively. An empirical research on Yanhe ecovillage was conducted and the study period extended from 2008 to 2020. The results showed that forest land had always accounted for more than 81.20% of the total area in Yanhe eco-village from 2008 to 2020, which greatly influenced land system stability and restricted economic development. This feature contrasted with RSLU. The total ESV of Yanhe eco-village declined by 1.60×106CNY during 2008–2020 because of land use changes. The EEHD was –0.01, which presented that there was a very slight unharmonious between ecology and economy. The coupling degree and coupling coordination degree showed that the development between the land and ecoeconomic systems exhibited a coupling coordination relationship. The results indicated that ecology and economy in Yanhe eco-village will change significantly in response to land use changes in rural areas, which further revealed the dynamic linkage between human beings and nature. Moreover, opposite variation tendencies in land system stability and ESV revealed that the contradiction between the high stability of the land system and well development of the eco-economic system. The results of this study implied that it is necessary and useful to integrate ESV into land management to achieve RSLU.

黄河“几字弯”都市圈土地利用效率与土地生态安全耦合协调研究

通过分析黄河“几字弯”都市圈土地利用效率与土地生态安全的时空演变特征,探索黄河流域土地利用与生态安全协同发展路径。利用Super-SBM模型、投影寻踪模型和耦合协调模型,以2002-2021年黄河“几字弯”都市圈15个城市作为研究对象,分别评估其土地利用效率、土地生态安全水平和二者之间的耦合协调度。结果表明:研究期内土地利用效率良好,平均值0.991,整体呈现逐年下降趋势,空间上以鄂尔多斯为高水平集聚中心;土地生态安全整体水平稳定,平均值为2.012,空间上以鄂尔多斯、榆林为高水平集聚中心;二者耦合协调均值为0.616,整体处于低度协调水平,大部分城市处于濒临失调状态,呈现“中心高,四周低”的空间分布特征。土地利用效率与土地生态安全存在较为明显的矛盾,因此,“几字弯”都市圈内各城市间应优化土地配置,提高土地利用效率,加强城市之间的经验共享与联动发展,共建差异化产业格局,协同推进黄河“几字弯”高质量发展。

考虑协作度的双人异步并行拆卸序列规划

为降低飞机运营中维修成本,减少拆卸时间,使双人拆卸更加灵活、高效,提出协作度概念,建立了考虑协作度的双人异步并行拆卸序列规划模型。使操作者在优先约束下产生的闲置时间加入另一操作者进行协作。设计适用的算子编码、解码方案以及进化规则,提出了适用于模型求解的遗传-粒子群算法;最后以起落架拆卸为例,在MATLAB软件上进行算例验证,与文献方法进行对比,计算结果表明采用考虑协作度的双人异步并行拆卸序列耗时更短,本文建立的模型可有效减少民航业大量的维修工作在拆卸中所耗时间,降低人力成本。

江苏省农用地整治项目实施的时空特征及其协调性研究

基于2011—2020年江苏省农用地整治项目数据,采用GIS空间计量和耦合协调度分析等方法探究了江苏省农用地整治项目时空格局特征,评估了农用地整治项目实施的协调度。结果显示:2011—2020年江苏省农用地整治项目数量、建设规模、新增耕地规模和投资金额的标准差和变异系数总体呈现波浪式变化。江苏省农用地整治项目的空间集聚特征呈现不均衡性,农用地整治项目的重心移动轨迹变化显著。2011—2020年江苏省农用地整治项目实施的协调度总体较低,处于严重失调向中度失调过渡的状态,空间格局呈现中部协调度略高、南北两侧协调度偏低。未来应强化农用地整治规划编制,明确农用地整治项目实施过程的资金要素配置,有效增加耕地面积,提升农用地整治项目区的综合效益。

黄河流域城市水土资源利用效率的耦合协调时空特征研究

论文利用2009—2020年黄河流域69个城市的面板数据,采用Windows-DEA模型测度城市土地资源利用效率与水资源利用效率,采用耦合协调度模型分析水土资源利用效率之间的协同与冲突,利用莫兰指数模型与空间杜宾模型分析水土资源利用效率协调度的时空演变特征与空间溢出效应,结论如下:(1)黄河流域城市土地资源与水资源利用效率呈现缓慢上升态势,但土地资源利用效率为下游>上游>中游,水资源利用效率为中游>上游/下游。(2)不同城市的水资源利用综合效率出现两极分化现象,但土地资源利用效率则逐步趋于稳态,而且,城市土地资源利用效率始终存在空间邻接的正相关特性。(3)研究时期内大部分城市处于高水平耦合阶段与协调过渡阶段,协调度水平相对较低,2018年前土地资源利用效率与水资源利用效率之间协调度也存在空间邻接的正相关特性。(4)经济增长对本地水土资源利用效率协调度具有促进作用,但对其他城市水土资源利用效率具有抑制作用;三产比重对本地与其他城市的水土资源利用效率协调度也具有相反作用。建议流域内各城市从严从细规划和集约利用水土资源,注重提升整个流域的三产比重与产业升级,保证流域内水土资源利用效率的协同发展。

破解海岸带环境司法困境:基于陆海统筹原则

我国海岸带环境案件存在管辖权冲突、法律适用有争议、原告资格不明确、诉讼性质认定有争鸣、诉讼程序衔接未确定、司法执行机制不完善等环环相扣的问题,造成海岸带环境司法困境。究其根源,主要在于陆海“二分法”的分类思维影响较大,其与陆海统筹合为表里的内涵尚未得到全面、深入的理解。为破解海岸带环境司法困境,既要重视海岸带环境案件的特殊性,将其确立为类型化案件并由海事法院专门管辖,又要贯彻陆海统筹原则,实现司法规则内在融贯、法治环节协调一致。

陆海统筹下海岸带生态环境修复法律制度研究

近些年,中国各沿海地区在海岸带生态环境保护和修复方面开展了一些实践,陆续出台了相关的政策文件,但中国海岸带生态环境修复的结果仍不理想。文章主要以陆海统筹为研究背景,全面分析海岸带生态环境修复存在的问题与发展趋势,梳理中国现行政策与制度存在的修复立法尚不健全、环境主体范围较窄、修复标准不明确等问题。从而根据中国海岸带生态环境发展现状,提出有利于海岸带环境修复的意见和建议。

福建省生态系统健康程度耦合评估及其时空演化分析

为了探究近15 a福建省生态优良的成因,以5 a为时间间隔选取2005—2020年福建省MODIS影像和土地利用数据等为数据源,构建土地利用强度体系,采用遥感生态指数(remote sensing ecological index,RSEI)作为分析方法,并利用耦合协调模型分析RSEI与土地利用强度的耦合关系,最后对福建省2005—2020年的生态健康进行时空演化分析。结果表明:①2005—2020年间,福建省全省生态环境发展呈“改善—退化—退化”的趋势,RSEI均值2020年为0.7048,生态环境等级均为良好;②福建省全省土地利用强度呈增长趋势,增长率为26.00%,其中三明市土地利用强度增长最多,增长160.91%;③福建省全省耦合协调度上升0.7290,达到良好协调;省内各市除厦门市耦合协调度下降0.1310,耦合协调度为轻度失调外,耦合协调度趋势均为上升。本研究填补了生态系统健康程度与土地利用强度互动研究机制的空白,也为福建省乃至全国的生态文明建设和生态系统健康程度评估研究提供了新的视角。

哈长城市群人口与建设用地协调度时空演变特征及影响因素研究

基于人口普查数据和土地利用数据,运用冷热点分析模型、离差系数和耦合协调模型,分析2000-2020年哈长城市群人口与建设用地的时空演变特征,然后分析人口与建设用地的规模变化协调和系统耦合协调特征,并划分类型,最后利用地理加权模型分析协调度变化的影响因素。结果发现:(1)哈长城市群各县(市)均有不同程度的人口流失,人口与建设用地发展不同步,总体呈“人减地增”的发展趋势;(2)研究期内,规模变化协调度持续下降,以中度失调为主。耦合协调度呈小幅上升趋势,以中度失调为主,哈长城市群东南部协调度高于西北部,地级市市辖区协调度高于县(市);(3)人均GDP、第三产业产值比重、人均财政支出对哈长城市群人口与建设用地协调变化具有显著影响。

双管武器弹丸同时着靶坐标测量方法研究

针对双线阵CCD交汇立靶系统测量双管武器弹丸同时着靶时会产生虚假弹着点且无法排除的问题,研究基于三线阵CCD相机交汇的双弹丸同时着靶坐标测量方法。当双弹丸同时着靶时,通过左侧和右侧CCD相机计算获得2个真实的弹着点和2个虚假的弹着点坐标,通过中间线阵CCD相机来排除2个虚假弹丸图像,以中间CCD相机探测器件的中心像元位置为原点建立直角坐标系,基于直线相交原理对弹丸的着靶坐标测量公式进行推导,对弹丸着靶坐标测量误差进行仿真和分析。仿真结果显示,在测量靶面为2 m×2 m时,横坐标测量误差的标准差小于1.5 mm,纵坐标测量误差的标准差小于2.0 mm,满足靶场对弹丸着靶坐标测量精度的要求。

中国海洋空间规划演进、特征及机制创新

海洋空间规划是海洋高质量发展的空间蓝图,为建设海洋强国提供要素保障。分析中国海洋空间规划的演进历程,海洋空间规划大致经历了初步探索阶段、“多规并举”阶段和“多规合一”阶段;剖析中国海洋空间规划特征,认为海洋空间规划具有推动陆海统筹、融入基于生态系统的管理、关注兼容性用海需求、拓展保护利用空间等特征;在海洋强国战略和海洋高质量发展驱动下,提出实施海洋空间规划机制创新,建立基于生态系统的管理机制、精细化管控机制和用途管制机制,以期为国土空间规划体系下海洋空间规划编制与实施提供决策支撑。