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Extraction of Basic Trends of Urban Expansion in China over Past 40 Years from Satellite Images

chinese {1.al Science 2016年第2期26卷 129-142页

作者： WEN Qingke ZHANG Zengxiang SHI Lifeng ZHAO Xiaoli liu Fang XU Jinyong YI Ling liu {2. wang Xiao ZUO Lijun HU Shunguang LI Na LI Minmin institute of Remote Sensing and Digital Earth Chinese Academy of Sciences Beijing 100101 China University of chinese academy of sciences Beijing 100049 China

If urban sprawl is to be avoided in China in the next ten years, it is not only crucial to understand the overall history, current status, and future trends of urban expansion there, but also these differences, and this is presently lacking. In this study, remotely sensed images with approximately 30 m spatial resolution were used to quantitatively assess the spatial and temporal patterns of urban expansion of 60 chinese cities(1.73–{1.1.). Urban-expansion-process curves of the cities studied were drawn using annual expansion area as an indicator. Curve similarity analysis generated four basic process modes of urban expansion in China. These included cities that: 1. peaked around {1.04 and then decelerated; {1. peaked around {1.1. and then decelerated; 3) showed sustained acceleration, and 4) showed continued deceleration. Four basic process modes represented cities under different levels of development stage. geographic location was found to be the most related characteristic to urban expansion process. Regional development policies at the national level in each region also showed highly temporal consistency with fluctuation characteristics of urban expansion process. Urban characteristic such as population size and administrative level were not found to be significantly related to urban expansion-process modes. Understanding the basic process-mode categories well is extremely important for future regional-balance planning and development of macroeconomic policies.

关键词： urban expansion urbanization expansion-process mode long term urban development stage curve similarity urban characteristic

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新质生产力赋能自然资源高质量管理:逻辑与路径

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自然资源学报 2024年第9期39卷 2011-2028页

作者：金晓斌沈镭黄贤金邓祥征胡守庚柯新利吴志峰赵多平刘晶南京大学地理与海洋科学学院南京210023 中国科学院地理科学与资源研究所北京100101 中国地质大学(武汉)公共管理学院武汉430074 华中农业大学公共管理学院武汉430070 广州大学地理科学与遥感学院广州510006 宁夏大学地理科学与规划学院银川750021 中国矿业大学公共管理学院徐州221116

中国社会经济已由高速增长阶段转向高质量发展阶段,推动自然资源高质量管理已成为关乎国家发展全局的重大问题。加快构建和培育新质生产力,赋能自然资源高质量管理,对于推动实现中国式现代化具有重大现实意义。围绕新质生产力赋能自然... 详细信息

中国社会经济已由高速增长阶段转向高质量发展阶段,推动自然资源高质量管理已成为关乎国家发展全局的重大问题。加快构建和培育新质生产力,赋能自然资源高质量管理,对于推动实现中国式现代化具有重大现实意义。围绕新质生产力赋能自然资源高质量管理的逻辑与路径,邀请来自不同学科领域的相关学者,就“新质生产力”与自然资源管理的逻辑关系、在自然资源管理中的定位与功能、对自然资源管理的启示与要求、促进自然资源高质量管理的重点领域,以及新质生产力应对气候变化与践行“双碳”目标、赋能国土空间治理现代化建设、重塑城乡协调发展新形态、保障粮食安全与助推农业强国建设路径等前沿议题发表观点。旨在深入解析这一议题及相关关键问题的解决路径,探索新质生产力在自然资源管理中的具体应用,为推动自然资源高质量管理、助力中国式现代化建设提供科学参考。综合各位专家的主要观点,以新质生产力推动自然资源高质量管理目标的实现,应特别关注以下关键问题:(1.面向全域、全要素、全过程、多部门协同的自然资源系统管理与机制创新;(2.面向综合保障自然资源安全与强化关键资源供给稳定的新质生产力培育重点领域与路径;(3)面向自然资源高效利用与精准管理的“数智化”新质生产力培育体系建设与实践创新。

关键词：新质生产力自然资源高质量管理机制创新 “数智化”转型

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Preliminary Estimation of Soil Carbon Sequestration of China’s Forests during 1.99–2.08

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Journal of resources and Ecology 2022年第1期13卷 17-26页

作者： wang {1. {2. Moucheng ZHOU Zhichun research {1. of Subtropical Forestry Chinese Academy of ForestryFuyangZhejiang 311400China institute of {1.{2. and natural resources research Chinese Academy of SciencesBeijing 100101China

The National Forest Inventory(NFI)is an important resource for estimating the national carbon balance(These data were unpublished data,and we could only obtain the data before 2.08 through data search by now).Based on the data from sample plots,the literature,and NFI,as well as the relationships between volume,biomass,annual litterfall and soil respiration of different forest types,the net ecosystem production(NEP),changes in forest biomass carbon storage(△Cbiomass)and non-respiratory losses(NR)of China’s forests during 1.99-2.08 were estimated,and the forest soil carbon sequestration(△Csoil)was assessed according to the carbon balance principle of the forest ecosystem(△Csoil=NEP-NR-△Cbiomass).The results showed that the total NEP,△Cbiomass,NR and△Csoil values for China’s forests were 1.7.530,48.704,31.033 and 77.793 Tg C yr^(-1. respectively,and average NEP,△Cbiomass,NR,and△Csoil values were 1.1.2.7,31.303,1..945 and 49.999 g C m^(-2. yr^(-1. *** were large spatial differences in forest soil carbon sequestration in different parts of *** forest soil in Jiangxi,Hunan,Zhejiang,Fujian,Anhui,Shanxi,Shaanxi,Guangxi and Liaoning served as carbon sources and the carbon released was about 2..507 Tg C yr^(-1..The other 2. provinces served as carbon sinks and the average carbon sequestration by forest soil came to 1.3.300 Tg C yr^(-1..This research established a method for evaluating soil carbon sequestration by China’s forests based on the NFI,which is a useful supplement to current statistical data-based studies on the forest ecosystem carbon cycle,and can promote comparable studies on forest soil carbon sequestration with consistent research methods at the regional scale.

关键词： carbon balance forest ecosystem national forest inventory soil carbon sequestration

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A Domestication-Associated Gene GmPRR3b Regulates the Circadian Clock and Flowering Time in Soybean

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Molecular Plant 2020年第5期13卷 745-759页

作者： Cong Li Ying-hui Li Yanfei Li Hongfeng Lu Huilong Hong Yu Tian Hongyu Li Tao Zhao Xiaowei Zhou Jun liu Xinan Zhou Scott A.Jackson {1. liu Li-juan Qiu The National Key Facility for Crop Gene resources and Genetic Improvement(NFCRI) Institute of Crop ScienceChinese Academy of Agricultural SciencesBeijingP.R.China Novogene Bioinformatics institute BeijingP.R.China Key Laboratory of Oil Crop Biology(MOA) Oil Crops Research Institute of Chinese Academy of Agriculture SciencesWuhanChina Center for Applied Genetic Technologies University of GeorgiaAthensGAUSA

Improved soybean cultivars have been adapted to grow at a wide range of latitudes,enabling expansion of cultivation ***,the genetic basis of this broad adaptation is still not ***,we report the identification of GmPRR3b as a major flowering time regulatory gene that has been selected during domestication and genetic improvement for geographic *** a genome-wide association study of a diverse soybean landrace panel consisting of {1.9 accessions,we identified 1. candidate quantitative loci associated with flowering time and maturity *** strongest signal resides in the known flowering gene E{1.verifying the effectiveness of our *** detected strong signals associated with both flowering and maturity time in a genomic region containing *** analysis revealed that GmPRR3bH6 is the major form of GmPRR3b that has been utilized during recent breeding of modern *** profiling analysis showed that GmPRR3bH6 displays rhythmic and photoperiod-dependent expression and is preferentially induced under long-day *** of GmPRR3bH6 increased main stem node number and yield,while knockout of GmPRR3bH6 using CRISPR/Cas9 technology delayed growth and the floral ***3bH6 appears to act as a transcriptional repressor of multiple predicted circadian clock genes,including GmCCAIa,which directly upregulates J/GmELF3a to modulate flowering *** causal SNP(Chr1.1.55{1.945)likely endows GmPRR3bH6 a moderate but appropriate level of activity,leading to early flowering and vigorous growth traits preferentially selected during broad adaptation of landraces and improvement of cultivars.

关键词： flowering time soybean landrace domestication genome-wide association study GmPRR3b circadian clock

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中国碳收支:1.80~2.2.年

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Science Bulletin 2024年第1期69卷 114-124页

作者：夏晓圣任培阳王旭辉刘丹陈修治丹利何斌何洪林居为民梁敏琪陆星劼彭静覃章才夏江周郑博魏静乐旭于贵瑞朴世龙袁文平 School of Atmospheric sciences Guangdong Province Data Center of Terrestrial and Marine Ecosystems Carbon CycleSun Yat-sen UniversityZhuhai 510245China Sino-French institute for Earth System Science College of Urban and Environmental SciencesPeking UniversityBeijing 100091China State Key Laboratory of Tibetan Plateau Earth System Resources and EnvironmentInstitute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China Key Laboratory of Regional Climate-Environment for Temperate East Asia Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China State Key Laboratory of Earth Surface Processes and Resource Ecology College of Global Change and Earth System ScienceBeijing Normal UniversityBeijing 100875China Synthesis research Center of China’s Ecosystem research Network Key Laboratory of Ecosystem Network Observation and ModelingInstitute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China International institute for Earth System Science Nanjing UniversityNanjing 210023China Tianjin Key Laboratory of Water resources and Environment Tianjin Normal UniversityTianjin 300387China institute of Environment and Ecology Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055China Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Collaborative Innovation Center of Atmospheric Environment and Equipment TechnologySchool of Environmental Science and EngineeringNanjing University of Information Science&TechnologyNanjing 210044China

As one of the world's largest emitters of greenhouse gases,China has set itself the ambitious goal of achieving carbon peaking and carbon ***,it is crucial to quantify the magnitude and trend of sources and sinks of atmospheric carbon dioxide(CO_(2.),and to monitor China's progress toward these *** state-of-the-art datasets and models,this study comprehensively estimated the anthropogenic CO_(2.emissions from energy,industrial processes and product use,and waste along with natural sources and sinks of CO_(2.for all of China during *** recognize the differences among various methods of estimating greenhouse emissions,the estimates are compared with China's National Greenhouse Gas Inventories(NGHGIs)for 1.94,2.05,2.1.,2.1.0}and *** CO_(2.emissions in China have increased by 7.39 times from 1.80 to 1.0}77 Gt CO_(2.a^(-1.in *** benefiting from ecological projects(e.g.,Three Norths Shelter Forest System Project),the land carbon sink in China has reached 1.65 Gt CO_(2.a^(-1.averaged through 2.1.-2.2.,which is almost 1..81.times that of the carbon sink in the *** average,China's terrestrial ecosystems offset 1..69%±2.49%of anthropogenic CO_(2.emissions through *** provincial-level administrative regions of China,Xizang and Qinghai,have achieved carbon neutrality according to our estimates,but nearly half of the administrative regions of China have terrestrial carbon sink offsets of less than 1.%of anthropogenic CO_(2.*** study indicated a high level of consistency between NGHGIs and various datasets used for estimating fossil CO_(2.emissions,but found notable differences for land carbon *** estimates of the terrestrial carbon sinks of NGHGIs urgently need to be verified with process-based models which integrate the comprehensive carbon cycle processes.

关键词： CO_(2.emission Land carbon sink China Carbon neutrality Carbon budget

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Effect of climate change and land use on stream flow in the upper and middle reaches of the Taoer River,northeastern China

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Forestry Studies in China 2010年第3期12卷 107-115页

作者： LI Li-juan LI bin LIANG Li-qiao LI Jiu-yi {1. Yu-mei institute of {1.{2. and natural resources research Chinese Academy of Sciences Beijing 100101 P. R. China Graduate University of the chinese academy of sciences Beijing 100039 P. R. China

The upper and middle reaches of the Taoer River, a representative ecologically sensitive area, has experienced great climate change and rapid agricultural and industrial development since 1.61. There is therefore an urgent need to evaluate the impact of climate change and human activities on stream flows to serve better the water resource management in this region. The nonparamet- ric Mann-Kendall test and moving t-test were used to identify trends and change points in stream flow, precipitation and potential evapotranspiration data series. A significant upward trend has been found in annual stream flow, with an abrupt change identified in 1.85 at the Taonan station which is the station that controls the entire study area. The stream flow data was divided into a baseline period and a period of change. Both Fu and Zhang＇s functions were employed to evaluate the impacts of variation in climate and human activities on mean annual stream flow, based on precipitation and potential evaporation. Analysis of the increase in mean annual stream flow between the baseline and the period of change indicated that climate change accounted for about 45% of the total increase and human activities were responsible for about 55%.

关键词： stream flow climate change human activity Budyko curve abrupt change

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2.00—2.1.年中蒙俄经济走廊东段冻土时空变化及植被响应

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地理学报 2021年第5期76卷 1231-1244页

作者：刘侦海王绍强陈斌中国地质大学(武汉)地理与信息工程学院武汉430074 中国科学院地理科学与资源研究所生态系统网络观测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

中蒙俄经济走廊东段位于欧亚大陆多年冻土区东南缘及森林线南界接近区,冻土及生态环境脆弱。本文基于MERRA-Land陆面模式离线运行产品分析了中蒙俄经济走廊东段2.00—2.1.年间冻土冻融的时空变化模式,以及冻土变化对返青期和全年不同阶... 详细信息

中蒙俄经济走廊东段位于欧亚大陆多年冻土区东南缘及森林线南界接近区,冻土及生态环境脆弱。本文基于MERRA-Land陆面模式离线运行产品分析了中蒙俄经济走廊东段2.00—2.1.年间冻土冻融的时空变化模式,以及冻土变化对返青期和全年不同阶段植被生长状态的影响。研究表明:2.00—2.1.年间研究区多年冻土及季节冻土均持续退化,时间上主要表现为冻土提前解冻、延迟冻结;空间上主要表现为多年冻土南界的多年冻土退化和季节冻土下限抬升,及连续多年冻土南界的活动层加厚。解冻始日是森林地区植被返青的主控要素,林下冻土解冻对土壤含水量的增加及沼泽湿地的隔热蓄水功能影响了森林地区植被的生长。但随着多年冻土南界森林及林下泥炭地演替为草甸和农田,多年冻土退化,进一步促进林下沼泽湿地的消失。探讨冻土退化与生态环境之间的协同关系,有助于识别气候变暖和人类活动叠加影响下的冻土退化脆弱区以及生态环境敏感区。

关键词：中蒙俄经济走廊东段冻土退化植被生长灰色关联分析

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Clinical features and linkage analysis for a chinese family with autosomal dominant central areolar choroidal dystrophy

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chinese Medical Journal 2009年第22期122卷 2686-2690页

作者： MA Kai YANG Xiu-fen HAN Cui ZHANG Ning XU Jun liu Shou-{1. LU Hai Torkel Snellingen {2. Ning-li liu Ning-pu beijing Tongren Eye Center Beijing Tongren Hospital Capital Medical University Beijing Ophthalmology and Visual Sciences Key Laboratory Beijing 100730 China institute of Orbital Diseases Armed Police General Hospital Beiiin~ 100039 China Department of Ophthalmology Tsinghua University First Hospital Beijing 100016 China Sekwa Eye Hospital Beijing 100088 China

Background A chinese family with autosomal dominant central areolar choroidal dystrophy （CACD） was identified. The purpose of this study was to collect the clinical findings from the family and to identify the genetic entity by linkage analysis.Methods Forty-three individuals from 3 generations of the family underwent ophthalmologic examinations, including best-corrected visual acuity, examination of the anterior segments, and inspection of the ocular fundus after pharmacologic mydriasis. Affected family members further underwent color vision test, color fundus photography, fluorescein angiography, automated perimetry, and electroretinography. The family was followed up for 30 months. Peripheral venous blood or buccal swabs were collected from each family member and genomic DNA was extracted. Linkage analysis was performed for candidate genes or loci using microsatellite markers.Results Seven family members in 3 continuous generations were diagnosed as having autosomal dominant CACD. The family showed progressive development of the disease, affecting both male and female. Age of onset of visual disturbances varied between 1. and 50 years. Phenotypic variability among affected individuals was apparent and ranged from relatively normal-appearing fundus with mild parafoveal pigment mottling to {1. atrophy of the macula. Fluorescein angiography showed hyperfluorescent parafoveal changes in early stage or well-demarcated area of chorioretinal atrophy with enhanced visibility of the residual underlying choroidal vessels in the late stage. Peripheral retina and visual fields were normal in affected individuals. Electroretinogram showed normal or mild reduction in the photopic amplitude. Eight candidate genes （STGD4, RCD1. peripherin/RDS, GUCA 1., RIMS1. UNC1.9, GUCY2., and AIPL1. and two genetic loci （{2.5.2.1..3, and 1.p1.） were excluded to be responsible for the disease by linkage analysis.Conclusions The clinical findings Of this chinese family with CACD sh

关键词： central areolar choroidal dystrophy clinical features linkage analysis chinese

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FDI、环境规制与黄河流域城市绿色全要素生产率

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经济地理 2020年第4期40卷 38-47页

作者：赵明亮刘芳毅王欢孙威山东财经大学国际经贸学院中国山东济南250002 中国科学院地理科学与资源研究所中国北京100101 中国科学院大学资源与环境学院中国北京100049

文章利用黄河流域65个重点城市2.01.2.1.年的面板数据,基于非径向、非角度SBM方向性距离函数的ML指数,测度城市绿色全要素生产率的动态变化情况,并在此基础上考虑区位、时期差异特征,实证研究外商直接投资(FDI)、环境规制对城市绿色全... 详细信息

文章利用黄河流域65个重点城市2.01.2.1.年的面板数据,基于非径向、非角度SBM方向性距离函数的ML指数,测度城市绿色全要素生产率的动态变化情况,并在此基础上考虑区位、时期差异特征,实证研究外商直接投资(FDI)、环境规制对城市绿色全要素生产率的影响。结果显示:①2.01.2.1.年,上游城市增长动力源于绿色技术效率,中下游城市源于绿色技术进步,2.1.年以来绿色全要素生产率普遍呈现增长趋势。②从全样本回归结果看,FDI全时段、第二阶段对绿色全要素生产率的影响为负,第一阶段正向影响源于绿色技术进步。环境规制具有显著的正向影响,第二阶段的影响系数略小,且对绿色技术效率的影响为负。③上游城市FDI在全时段、第一阶段影响为正,中下游城市在全时段、第二阶段影响为负,环境规制有正向影响,绿色技术效率提升仍是短板。相应提出以下政策建议:优化要素配置,注重规模效应,着力提升绿色技术效率;以"一带一路"倡议为引领,制定差异化引资战略,提高FDI质量和水平;健全生态环境与经济发展协同监控机制,保障经济绿色、健康、高质量发展;加强绿色科技研发、提高投资成效和金融服务水平。

关键词：外商直接投资(FDI) 环境规制黄河流域绿色全要素生产率“ 一带一路”倡议绿色技术金融服务

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基于出租车用户出行的功能区识别

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地球信息科学学报 2018年第11期20卷 1550-1561页

作者：刘菊许珺蔡玲孟斌裴韬中国科学院地理科学与资源研究所资源与环境信息系统国家重点实验室北京100101 中国科学院大学资源与环境学院北京100049 北京联合大学应用文理学院北京100191 江苏省地理信息资源开发与利用协同创新中心南京210023

出租车数据作为城市大数据重要来源,其上车行为和下车行为直接反映城市人群出行行为特征,帮助城市规划者发现城市人群出行规律和城市功能结构。但是出租车数据隐含多维度信息,一维或者二维模型不足以表达和挖掘其蕴含的多维信息,因此本... 详细信息

出租车数据作为城市大数据重要来源,其上车行为和下车行为直接反映城市人群出行行为特征,帮助城市规划者发现城市人群出行规律和城市功能结构。但是出租车数据隐含多维度信息,一维或者二维模型不足以表达和挖掘其蕴含的多维信息,因此本文选择可以承载多维数据的张量模型对出租车OD(上车/下车)数据进行时空模式挖掘。本文将北京六环区域划分为500 m×500 m格网,采用北京市2.1.0}1.月1.1.日的出租车OD数据,分别构建O点和D点张量,利用张量分解模型从日尺度、时段尺度揭示出租车用户出行时间模式,同时获取不同时段对应的出租车用户出行空间模式,并推测空间模式包含的语义属性。本文结合城市兴趣点(Point of Interest, POI)数据,提高空间模式语义属性推测的准确性,识别出租车用户出行功能区。结果表明:出租车用户出行时间符合工作日和休息日的早高峰、日间、晚高峰以及夜间模式;对应8种时间模式,出租车用户出行包含8种空间模式,每一种空间模式都是对应时间模式下的上下车热点区域,因此空间模式的变化表明城市人群在不同的时间点,到达不同的场所,进行不同的活动,间接表达空间功能的动态变化;区域的功能不是单一静态的,而是随着时间在不断地变化,是不同时段功能的组合。本文揭示出租车OD数据中隐含的出租车用户出行模式和空间功能动态变化,对利用人类行为时空模式研究区域空间功能结构具有科学参考价值。

关键词：出租车数据起始点张量分解时空规律功能区

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