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Evaluation of suitability,adaptability,and reserve potential of construction land on the Qinghai-Tibet Plateau

Journal of Geographical Sciences 2024年第1期34卷 41-61页

作者： YANG Hua XU Yong zhou kan WANG Lijia XU Lin Key Laboratory of Regional Sustainable Development Modeling Institute of Geographic Sciences and Natural Resources ResearchCASBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China

Construction land is the leading carrier of human activities such as production and living.Evaluating the construction land suitability(CLS)on the Qinghai-Tibet Plateau(QTP)holds significant implications for harmonizing the relationship between ecological protection and human activity and promoting population and industry layout optimization.However,no relevant studies provide a complete CLS assessment of the QTP.In this study,we developed a model-based CLS evaluation framework coupling of pattern and process to calculate the global CLS on the QTP based on a previously developed CLS evaluation model.Then,using the land-use data of 1990,2000,2010,and 2020,we examined the adaptability of existing construction land(ECL)to the CLS assessment result through the adaptability index and vertical gradient index and further analyzed the limitations of maladaptive construction land.Finally,we calculated the potential area of reserve suitable construction land.This article includes four conclusions:(1)The highly suitable,suitable,moderately suitable,marginally suitable,and unsuitable CLS classes cover areas of 0.33×10^(4)km^(2),10.42×10^(4)km^(2),18.06×10^(4)km^(2),24.12×10^(4)km^(2),and 205.29×10^(4)km^(2),respectively.Only approximately 11%of the study area on the QTP is suitable for large-scale permanent construction land,and approximately 79.50%of the area is unsuitable under current economic and technological conditions.(2)The ECL adaptability index is 85.16%,85.93%,85.18%,and 78.01%during 1990–2020,respectively,with an average adaptability index exceeding 80%on the QTP.The ECL distribution generally conforms to construction land suitable space characteristics but with a significant spatial difference.(3)From 1990 to 2020,the maladaptive ECL was dominated by rural settlement land,transport land,and special land,with a rapidly increasing proportion of urban and other construction land.The maladaptive ECL is constrained by both elevation and slope in the southern Qinghai Plateau,the Hengduan Mountains,and the Qilian Mount

关键词： land resource construction land suitability existing construction land adaptability human activity Qinghai-Tibet Plateau

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农牧交错带村镇生活垃圾逆向物流模式的分异机制及空间优化

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地理学报 2024年第2期79卷 299-320页

作者：张健周侃中国科学院地理科学与资源研究所中国科学院区域可持续发展分析与模拟重点实验室北京100101 中国科学院大学资源与环境学院北京100049

生活垃圾逆向物流是村镇生活垃圾治理的关键纽带。揭示生活垃圾逆向物流模式的空间分异机制、构筑经济高效的生活垃圾逆向物流体系,对农牧交错带生态安全格局稳定、村镇人居环境品质提升具有重要意义。以青海省海东市为实证对象,构建149... 详细信息

生活垃圾逆向物流是村镇生活垃圾治理的关键纽带。揭示生活垃圾逆向物流模式的空间分异机制、构筑经济高效的生活垃圾逆向物流体系,对农牧交错带生态安全格局稳定、村镇人居环境品质提升具有重要意义。以青海省海东市为实证对象,构建1499个村镇居民点的多源异构数据集,多尺度刻画垃圾治理效能地域非均衡性,应用多项逻辑斯蒂回归模型定量解析垃圾逆向物流模式空间分异的影响因素,并基于改进潜能模型的设施空间可达性评价,提出逆向物流模式空间优化方案。结果显示:海东市生活垃圾呈“局部集聚、总体分散”分布,垃圾治理效能滞后于原住居民生活需求,由湟水谷地中心向周边农区村镇、牧民定居点呈水平递减;农牧交错带地理环境高寒性与村镇聚落分散性,是阻碍集中式物流模式配置的根本原因;常住人口规模小、社会经济发展状态较差的村镇居民点是集中式物流模式配置的薄弱区域;充足的基层管理人员数量和年轻化干部群体,有利于落实村分散物流模式管理要求;海东市村镇居民点垃圾处理设施空间可达性偏低,应以城镇集中式、乡镇传导式、农牧分散式3类路径为遵循,采用集中式与分散式物流并举的调适策略进行逆向物流模式全局优化。建议以物流成本最小化、垃圾治理零胁迫为导向,兼顾各级物流节点功能特性分类施策,发挥县域垃圾逆向物流软硬件设施统筹职能,激活乡镇垃圾协同治理效能,强化村庄源头分类与就地消纳功能,营造减量化、资源化、无害化的生活垃圾逆向物流体系。

关键词：生活垃圾逆向物流空间分异形成机制农牧交错带青海省海东市

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Drivers of Regional Environmental Pollution Load and Zoning Control:A Case Study of the Yangtze River Economic Belt,China

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Chinese Geographical Science 2022年第1期32卷 31-48页

作者： zhou kan WU Jianxiong FAN Jie LIU Hanchu Key Laboratory of Regional Sustainable Development Modeling Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China College of Resources and Environment University of Chinese Academy of SciencesBeijing 100049China Institute of Science and Development Chinese Academy of SciencesBeijing 100190China

The high environmental pollution load caused by the massive pollutant emissions and the accumulation of endogenous and cross-regional pollution has become an important obstacle to the current ecological civilization construction in the Yangtze River Economic Belt(YREB)in China.Taking the YREB as an example,by using four environmental pollutant emission indicators,including chemical oxygen demand(COD),ammonia nitrogen(NH_(3)-N),sulfur dioxide(SO_(2)),and nitrogen oxides(NO_(x)),this paper established an environmental pollution load index(EPLI)based on the entropy-based measurement.Moreover,the Spatial Durbin Model was used to quantitatively analyze the drivers and spatial effects of environmental pollution load.Finally,specific scientific references were provided for formulating environmental regulations of pollution source control in the YREB.The results showed that:1)During2011-2015,the EPLI in the YREB was reduced significantly and the environmental pollution load increased from upstream to downstream.Among them,the pollution load levels in the Upper Mainstream subbasin,Taihu Lake subbasin,and Lower Mainstream subbasin were the most prominent.2)The environmental pollution load situation in the YREB was generally stable and partially improved.High load level areas were mainly concentrated in the Yangtze River Delta Region and the provincial borders in upstream,midstream,and downstream areas.The high load level areas already formed in Chengdu and Chongqing were also the key regulatory points in the future.3)The degree of local environmental pollution load was apparently affected by the adjacent cities.The population size,industrialization level,and the fiscal decentralization not only drove the increase of the local environmental pollution load level,but also affected the adjacent areas through the spatial spillover effects.The land development intensity mainly drove the increase in the local EPLI in the YREB.While factors such as economic development level and agricultural economic share could only act on the en

关键词： environmental pollution load drivers spatial effects Spatial Durbin Model Yangtze River Economic Belt

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The functional evolution and system equilibrium of urban and rural territories

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Journal of Geographical Sciences 2022年第7期32卷 1203-1224页

作者： FAN Jie LI Sisi SUN Zhongrui GUO Rui zhou kan CHEN Dong WU Jianxiong Key Laboratory of Regional Sustainable Development Modeling Institute of Geographic Sciences and Natural Resources ResearchCASBeijing 100101China College of Resources and Environment University of Chinese Academy of SciencesBeijing 100049China Institute of Science and Development CASBeijing 100190China

The coordinated development of urban and rural territorial systems has long been a scientific issue of concern in geography and socioeconomic development in China.Based on Territorial Function Theory,this paper establishes a theoretical framework to support the coordinated development of urban and rural territorial systems,analyzes the trend of functional evolution,discusses the impact of efficient allocation and orderly element flow on system equivalence development,and puts forward approaches and policy suggestions for equilibrium development in the future.The main conclusions are as follows:(1)The evolution of urban and rural territorial functions has experienced four stages:rural to rural,rural to urban transition,rural to urban,and urban to urban.In this process,territorial functions have been developed to be hierarchical and advanced.(2)Functional evolution enables urban and rural comparative advantages to be transformed from value difference to value equivalence.Increasing the flow intensity and reconstructing the flow space have become the necessary conditions for the coordination of development.(3)Land is the most important resource in China,and land system reform is the key to achieving equivalence development of urban and rural territorial systems,thereby determining the future equilibrium development of the two systems.

关键词： urban territorial function rural territorial function urban territorial system rural territorial system system equilibrium urban and rural equivalence development land system reform

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Evaluation and Analysis of Provincial Differences in Resources and Environment Carrying Capacity in China

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Chinese Geographical Science 2016年第4期26卷 539-549页

作者： CHENG Jingyao zhou kan CHEN Dong FAN Jie Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China Key Laboratory of Regional Sustainable Development Modeling Chinese Academy of Sciences Beijing 100101 China University of Chinese Academy of Sciences Beijing 100049 China State Information Center Beijing 100045 China

Resources and environment carrying capacity is central to not only regional sustainable development but also major function-oriented zoning. This paper presents an evaluation index system for resources and environment carrying capacity based on four aspects of carrying capacity(i.e., water resources, land resources, the environment, and ecosystems) by using a square deviation decision-making method, and on the basis of above effort evaluates the resources and environment carrying capacity across 31 provincial regions in China(not including Hong Kong, Macao and Taiwan regions of China). In addition, this paper evaluates the current state of socio-economic development, and analyzes the spatial distribution of resources and environment pressure. The results showed that distinct spatial differences in resources and environment carrying capacity and pressure across provincial regions. Resources and environment pressure is affected by both comprehensive resources and environment carrying capacity and socio-economic development. Regions subjected to lower degrees of resources and environment pressure will be restricted by resources and environmental problems through future courses of development owing to excessively low carrying capacities. By contrast, regions with higher comprehensive resources and environment carrying capacity will be subjected to excessively high levels of resources and environment pressure because of rapid socio-economic development. Both of resources and environment carrying capacity and pressure must therefore be considered in the allocation of country-binding targets to provincial regions.

关键词：评价指标体系环境承载力水资源中国环境承载能力社会经济发展区域可持续发展环境压力

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Major Function Oriented Zone: New Method of Spatial Regulation for Reshaping Regional Development Pattern in China

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Chinese Geographical Science 2012年第2期22卷 196-209页

作者： FAN Jie SUN Wei zhou kan CHEN Dong Key Laboratory of Regional Sustainable Development Modeling Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China

Newest planning methods implemented by Chinese government are promoting a coordinated regional development and shaping an orderly spatial structure by applying the regulation of territorial function. This article analyzes the problems of spatial planning and regional strategy caused by the wrongly-set primary goal of economic development; it states that the three-fold objective of competitiveness, sustainability, and welfare fairness shall be the principal for China to implement the spatial regulation in the new era; it discusses about theoretical thoughts and technology framework of conducting the ′Major Function Oriented Zone′ based on their different major functions that each region plays in urbanization and industrialization, ecological constructions, grain productions, and protection of natural and cultural heritages; it introduces the new concept of ′Major Function Oriented Zone′ that include the major functions category, the stereo regional equilibrium mode, the two-level zoning specification, and the territorial development intensity; it offers a zoning scheme that defines development-optimized and development-prioritized zones as regions with massive urbanization and industrialization, development-restricted zones as ecological constructing or grain producing regions, development-prohibited zones as natural and cultural heritage protecting regions; and finally it addresses the main obstacle for implementing ′Major Function Oriented Zone′, which is the institutional arrangement of the supreme goal of high GDP growth rate that is currently being implemented.

关键词：区域经济发展空间结构中国政府功能区文化遗产保护规例区域协调发展 GDP增长率

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“十五五”时期我国生态地区的战略格局与优化

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中国科学院院刊 2024年第4期39卷 676-688页

作者：周侃樊杰周道静钱者东虞虎刘汉初张健中国科学院地理科学与资源研究所中国科学院区域可持续发展分析与模拟重点实验室北京100101 中国科学院大学资源与环境学院北京100049 中国科学院科技战略咨询研究院北京100190 生态环境部南京环境科学研究所南京210042

自主体功能区规划实施以来,重点生态功能区生态空间持续扩张、植被覆盖显著增加,人口呈总量减少、城镇人口增加双向变化,经济社会发展取得显著成效,生态安全屏障功能稳步提升、人地关系紧张状态总体缓解。“十五五”时期,坚持以提供生... 详细信息

自主体功能区规划实施以来,重点生态功能区生态空间持续扩张、植被覆盖显著增加,人口呈总量减少、城镇人口增加双向变化,经济社会发展取得显著成效,生态安全屏障功能稳步提升、人地关系紧张状态总体缓解。“十五五”时期,坚持以提供生态服务或生态产品为主的功能定位,稳固生态系统供给、调节、支持及文化服务规模;同时,更加注重其服务质量提升,形成更具多样性、稳定性、可持续性的生态基底,并兼容绿色化、低碳化的生态产品开发利用功能,形成推进人与自然和谐共生现代化的包容性保护方式。“十五五”时期,生态地区不仅是国土空间新安全格局的重要组成,还将是国土空间新发展格局的关键支撑。优化建议:从战略格局层面,增强生态安全屏障与国土空间开发格局的空间联系与供需互动,筑牢国家生态安全屏障,优化重点生态功能区格局,整合自然保护地体系,严守生态保护红线;以分类提升生态系统服务功能质量、深入实施山水林田湖草沙一体化保护修复、积极培育绿色发展新动能、加快形成精细化分区管控体系、协同推进体制机制改革创新为重点,以高水平保护支撑生态地区高质量发展。

关键词：生态地区重点生态功能区 “十五五”时期战略格局生态文明

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基于自然与人文耦合视域的高寒生态功能区宜居性评价及阻滞因子诊断--以青海省为例

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生态学报 2024年第3期44卷 992-1008页

作者：殷悦周侃湛东升陈妤凡中国科学院地理科学与资源研究所区域可持续发展分析与模拟重点实验室北京100101 中国科学院大学资源与环境学院北京100049 浙江工业大学管理学院杭州310023 宁波大学地理与空间信息技术系宁波315211

宜居性是自然生态环境和人文社会环境的有机统一体,厘清高寒生态功能区宜居性及其阻滞因子,是精准提升生态安全屏障内宜居水平并促进其人与自然和谐共生的重要前提。基于城乡宜居性评价基本范式、顾及高寒生态功能区人居系统的独特性,... 详细信息

宜居性是自然生态环境和人文社会环境的有机统一体,厘清高寒生态功能区宜居性及其阻滞因子,是精准提升生态安全屏障内宜居水平并促进其人与自然和谐共生的重要前提。基于城乡宜居性评价基本范式、顾及高寒生态功能区人居系统的独特性,从自然与人文耦合视域构建由自然环境、居住环境、设施环境、社会环境4个维度、8个一级指标及24个二级指标组成的高寒生态功能区宜居性指标体系,以青海省45个县域单元为例定量评价其宜居性及阻滞因子,并探讨宜居性与生态重要性、社会经济发展状态的交互关系。结果显示:(1)青海省总体宜居水平偏低,并呈现由河湟谷地生态区、柴达木盆地生态区、环青海湖生态区、三江源生态区依次递减的地域分异;(2)宜居水平和生态重要性的空间耦合不协调,三江源生态区等生态重要区的宜居水平低,宜居水平与人口规模、经济发展均成正比;(3)青海省宜居性主要受到居住环境和社会环境的阻滞,生态地理分区层面,在自然因子的主要制约下,三江源生态区、环青海湖生态区、柴达木盆地生态区分别受设施、居住、社会环境的强约束;(4)针对不同生态地理分区宜居性特征提出未来人口引导及宜居性优化模式,即按宜居性及社会经济生态引力明确人口集聚型、疏散型和稳定型3种空间集疏类型,通过人口城镇化、就业移民、教育移民等跨区域移民及就近生态移民增强宜居性与人口分布的空间适配性,以三江源生态区等弱势区域以及饮水设施、道路设施、物流配送、网络通讯等基础设施阻滞因子为重点,提升高寒生态功能区人居系统的设施配置与供给能力。

关键词：宜居性阻滞因子自然与人文耦合生态地理分区高寒生态功能区

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Enhance Information Flow Tracking with Function Recognition

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China Communications 2010年第6期7卷 24-29页

作者： zhou kan Huang Shiqiu Huang Shan Qi Zhengwei Gu Jian Guan Haibing School of software Shanghai Jliao Tong University Shanghai 200240 P. R. China Key Lab of Information Network Security Ministry of Public Security Department of Computer Science ＆ Engineering Shanghai Jiao Tong University Shanghai 200240 P. R China Shanghai Key Laboratory of Scalable Computing ＆ System Shanghai P. R. China

With the spread use of the computers, a new crime space and method are presented for criminals. Thus computer evidence plays a key part in criminal cases. Traditional computer evidence searches require that the computer specialists know what is stored in the given computer. Binary-based information flow tracking which concerns the changes of control flow is an effective way to analyze the behavior of a program. The existing systems ignore the modifications of the data flow, which may be also a malicious behavior. Thus the function recognition is introduced to improve the information flow tracking. Function recognition is a helpful technique recognizing the function body from the software binary to analyze the binary code. And that no false positive and no false negative in our experiments strongly proves that our approach is effective.

关键词：信息跟踪识别功能二进制代码功能识别计算机推广使用组成部分刑事案件

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多尺度聚丙烯纤维混凝土弯曲疲劳寿命试验及数值模拟

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材料导报 2024年第4期38卷 95-102页

作者：梁宁慧毛金旺游秀菲刘新荣周侃重庆大学土木工程学院重庆400045 库区环境地质灾害防治国家地方联合工程研究中心重庆400045

为研究多尺度聚丙烯纤维混凝土的弯曲疲劳性能,开展基准混凝土、聚丙烯粗纤维混凝土及多尺度聚丙烯纤维混凝土的静载试验及不同应力水平(0.75、0.80、0.85)下的弯曲疲劳试验,建立弯曲疲劳寿命方程,并结合ABAQUS与FE-SAFE软件建立纤维混... 详细信息

为研究多尺度聚丙烯纤维混凝土的弯曲疲劳性能,开展基准混凝土、聚丙烯粗纤维混凝土及多尺度聚丙烯纤维混凝土的静载试验及不同应力水平(0.75、0.80、0.85)下的弯曲疲劳试验,建立弯曲疲劳寿命方程,并结合ABAQUS与FE-SAFE软件建立纤维混凝土梁的三点弯曲疲劳有限元模型。结果表明:聚丙烯纤维的掺入,尤其是多尺度聚丙烯纤维混掺显著增强了混凝土基体的抗折、抗疲劳性能。双对数lgS-lgN疲劳方程能够较好地描述多尺度聚丙烯纤维混凝土的应力水平与疲劳寿命的相关性,使用lgS-lgN疲劳方程计算得到200万次循环荷载作用下多尺度聚丙烯纤维混凝土的疲劳强度最高,为3.91 MPa。三组试件疲劳寿命的数值模型预测值均介于实测疲劳寿命的最大值与最小值之间,并接近于疲劳寿命平均值,该模型为多尺度聚丙烯纤维混凝土的疲劳寿命预测提供了理论依据。

关键词：多尺度聚丙烯纤维混凝土弯曲疲劳疲劳寿命预测数值模拟

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