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Heat Health Risk and Adaptability Assessments at the Subdistrict Scale in Metropolitan Beijing

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International Journal of Disaster Risk Science 2022年第6期13卷 987-1003页

作者： Xiaokang Su Fang Wang demin zhou Hongwen Zhang Key Laboratory of Land Surface Pattern and Simulation Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China College of Resource Environment and Tourism Capital Normal UniversityBeijing 100048China Beijing Meteorological Disaster Prevention Center Beijing 100089China

Against the background of global climate change, the increasing heat health risk from the combined effect of changes in high temperature, exposure, vulnerability, and other factors has become a growing *** the low number of temperature observation stations is insufficient to represent the complex changes in urban heatwaves, and subdistrict-scale(town, township, neighborhood committee, and equivalent) heat health risk and adaptability assessments are still limited. In this study, we built daytime and nighttime high-temperature interpolation models supported by data from 225 meteorological stations in *** models performed well at interpolating the cumulative hours of high temperature and the interpolation quality at night was better than that during the day. We further established a methodological framework for heat health risk and adaptability assessments based on heat hazard, population exposure, social vulnerability, and adaptability at the subdistrict scale in Beijing. Our results show that the heat health risk hotspots were mainly located in the central urban area,with 81 hotspots during the day and 76 at night. The average value of the heat health risk index of urban areas was 5.60 times higher than that of suburban areas in the daytime,and 6.70 times higher than that of suburban areas in the night. Greater population density and higher intensity of heat hazards were the main reasons for the high risk in most heat health risk hotspots. Combined with a heat-adaptive-capacity evaluation for hotspot areas, this study suggests that 11high-risk and low-adaptation subdistricts are priority areas for government action to reduce heat health risk in policy formulation and urban development.

关键词： Beijing Heat health risk Heat adaptability High-temperature interpolation models Subdistrict scale

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基于零件族的数控编程实例

机械工程师 2024年第3期 77-79,84页

作者：方振红方春华孙健周德民张伟中国兵器工业集团江山重工研究院湖北襄阳441100

成组技术与数控技术都能提高多品种小批量零件的生产效率。针对归并成组的零件族进行编程,能减少重复劳动、提高生产效率。基于零件族编程可采用自动编程和手工宏程序两种方式。基于零件族的CAM编程,UG软件可采用部件族工具和加工模板... 详细信息

成组技术与数控技术都能提高多品种小批量零件的生产效率。针对归并成组的零件族进行编程,能减少重复劳动、提高生产效率。基于零件族编程可采用自动编程和手工宏程序两种方式。基于零件族的CAM编程,UG软件可采用部件族工具和加工模板定制两种途径。宏程序可克服CAM软件无法共享程序的缺陷,是零件族特征编程的无二选择。

关键词：零件族成组技术数控编程 UG 加工模板宏程序

Spatial distribution patterns of wetland plants in relation to environmental gradient in the Honghe National Nature Reserve, Northeast China

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Journal of Geographical Sciences 2012年第1期22卷 57-70页

作者： zhou demin LUAN Zhaoqing GUO Xiaoyu LOU Yanjing Key Lab of Wetland Ecology and Environment Northeast Institute of Geography and Agricultural Ecology CAS Institute of Water Resources and Environment Jilin University College of Resources Environment and GIS Capital Normal University

Quantifying correlation between the spatial patterns of natural wetland plants and environmental gradient gives better understanding of wetland habitats, which is the fundamental for the strategy making on the protection and restoration of natural wetlands. In this study, the spatial patterns of wetland plants and the environmental gradient of wetland habitats were assessed in the Honghe National Nature Reserve （HNNR） in Northeast China, a wetland of international importance on the Ramsar list. Biophysical parameters’ values of wetland plants were obtained by field sampling methods, and wetland mapping at the community scale was completed using remote sensing techniques. Digital delineation of the surface water system, hydrological zoning and wetness index were produced by spatial analysis methods in Geographic Information System. An ecological ordination method and two clustering methods were used to quantify the relationship between the spatial distribution patterns of wetland plants and the corresponding environmental gradients. Such quantitative analyses also present the specific diversity of different types of wetland plants based on the environmental attributes of their habitats. With the support from modern geo-information techniques, the experimental results indicate how four ecotypes of wetland plants spatially transit from forest swamp, shrub wetland and meadow into marsh wetland with increasing wetness index and water table. And they also show how wetland spatial distribution patterns are controlled by an environmental gradient of wetness. Another key finding of this research work is that our results present the exact fundamental differences between marsh and non-marsh plants of 11 wetland plant communities within the core study area. Hence, this case study gives a good sample for better understanding of the complex correlation between the spatial patterns of wetland plants and their environmental attributes using advanced digital analysis methods. It is

关键词： wetland plant ecology spatial pattern environmental gradient Honghe National Nature Reserve

Valuation of Lake and Marsh Wetlands Ecosystem Services in China

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Chinese Geographical Science 2014年第3期24卷 269-278页

作者： ZHANG Yiran zhou demin NIU Zhenguo XU Fengjiao Base of the State Key Laboratory of Urban Environmental Processes and Digital Modeling College of Resource Environment and Tourism Capital Normal University Institute of Remote Sensing and Digital Earth Chinese Academy of Sciences

Wetlands are highly productive natural ecosystems, providing valuable goods and services. There is growing interest in transferring ecosystem service value from the existing wetlands studied to other wetlands ecosystems at a large geographic scale. The benefit transfer method uses the known values from wetlands to predict the value of other wetland sites. This methodology requires only limited time and resources. The present study calculated the value of the ecological services provided by lake and marsh wetlands in China in terms of biodiversity indices, water quality indices and economic indices. Basic data on wetlands were obtained through remote sensing images. The results show that: 1) The total ecosystem service value of the lake and marsh wetlands in 2008 was calculated to be 8.1841 × 1010 United States Dollars(USD), with the marsh and lake wetlands contributing 5.6329 × 1010 and 2.5512 × 1010 USD, respectively. Values of marsh ecosystem service were concentrated in Heilongjiang Province(2.5516 × 1010 USD), Qinghai Province(1.2014 × 1010 USD), and Inner Mongolia Autonomous Region(1.1884 × 1010 USD). The value of the lakes were concentrated in Tibet Autonomous Region(6.223 × 109 USD), Heilongjiang(5.810 × 109 USD), and Qinghai(5.500 × 109 USD). 2) Waste treatment and climate regulation services contributed to 26.29% and 24.74% respectively, of the total ecosystem service value of the marsh wetlands. Hydrological regulation and waste treatment contributed to 41.39% and 32.75%, respectively, of the total ecosystem service value of the lake wetlands. 3) The total ecological service value of the lake and marsh wetlands was 54.64% of the total service value of natural grassland ecosystems and 30.34% of the total service value of forests ecosystems in China.

关键词：生态系统服务价值沼泽湿地中国森林生态系统服务功能生态服务价值生物多样性指数湖泊湿地估值

Numerical Modeling of Shallow Water Table Behavior with Lisse Effect

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Chinese Geographical Science 2011年第2期21卷 249-256页

作者： ZHANG Jinga GONG Huili Mark A ROSS LI Xiaojuan zhou demin Key Laboratory of Resource Environment and GIS of Beijing Capital Normal University Beijing 100048 China Department of Civil and Environmental Engineering University of South Florida 4202 E. FowlerAve ENB 118 Tampa FL 33620 USA

Air entrapment is an important consideration in environments with shallow water tables and sandy soil, like the condition of highly conductive sandy soils and flat topography in Florida, USA. It causes water table rises in soils, which are significantly faster and higher than those in soils without air entrapment. Two numerical models, Integrated Hydrologic Model (IHM) and HYDRUS-1D (a single-phase, one-dimensional Richards′ equation model) were tested at an area of west central Florida to help further understanding the shallow water table behavior during a long term air entrapment. This investigation employed field data with two modeling approaches to quantify the variation of air pressurization values. It was found that the air pressurization effect was responsible at time up to 40 cm of water table rise being recorded by the observation well for these two models. The values of air pressurization calculated from IHM and HYDRUS-1D match the previously published values. Results also indicated that the two numerical models did not consider air entrapment effect (as the predictive parameters remain uncertain) and thus results of depth to water table from these models did not compare to the observations for these selected periods. Incorporating air entrapment in prediction models is critical to reproduce shallow water table observations.

关键词：地下水位数值模拟行为浅层美国佛罗里达州沙质土壤数值模型中西部地区

Quantitative Simulation on Soil Moisture Contents of Two Typical Vegetation Communities in Sanjiang Plain,China

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Chinese Geographical Science 2011年第6期21卷 723-733页

作者： LI Shanghua zhou demin LUAN Zhaoqing PAN Yun JIAO Cuicui Base of the State Key Laboratory of Urban Environmental Process and Digital Modeling Capital Normal UniversityBeijing 100048 Chinc~ Key Laboratory of 3D Information Acqu＆ition and Application Ministry of EducationCapital Normal University Beifing 100048 Chin~ Northeast Institute of Geography and Agroecology Chinese Academy of Sciences Changchun 130012 China）

Different types of vegetation occupy different geomorphology and water gradient environments in the San-jiang Plain,indicating that the soil moisture dynamics and water balance patterns of the different vegetation communi-ties might differ from each *** this paper,a lowland system,perpendicular to the Nongjiang River in the Honghe National Nature Reserve(HNNR),was selected as the study *** area was occupied by the non-wetland plant forest and the typical wetland plant *** Microsoft Windows-based finite element analysis software package for simulating water,heat,and solute transport in variably saturated porous media(HYDRUS),which can quantita-tively simulate water,heat,and/or solute movement in variably-saturated porous media,was used to simulate soil moisture dynamics in the root zone(20-40 cm) of those two plant communities during the growing season in *** simulation results for soil moisture were in a good agreement with measured data,with the coefficient of determi-nation(R2) of 0.44-0.69 and root mean square error(RMSE) ranging between 0.0291 cm3/cm3 and 0.0457 cm3/cm3,and index of agreement(d) being from 0.612 to *** the study period,the volumetric soil moisture content of meadow increased with the depth and its coefficient of variation decreased with the depth(from 20 cm to 40 cm),while under the forest the soil moisture content at different depths varied *** calculated result of water budget showed that the water budget deficit of the meadow was higher than that of the forest,suggesting that the meadow is more likely to suffer from water stress than the *** quantitative simulation by HYDRUS in this study did not take surface runoff and plant growth processes into *** root water uptake and surface runoff models will be needed for higher accuracy in further researches.

关键词：土壤水分含量定量模拟三江平原植被群落洪河国家级自然保护区 Microsoft 土壤水分动态饱和多孔介质

Impact of Land Use Change on Groundwater Recharge in Guishui River Basin,China

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Chinese Geographical Science 2011年第6期21卷 734-743页

作者： PAN Yun GONG Huili zhou demin LI Xiaojuan NAKAGOSHI Nobukazu Base of the State Laboratory of Urban Environmental Processes and Digital Modeling Capital Normal University Beijing 100048Chind Beijing Key Laboratory of Resources Environment and GIS Capital Normal University Beijing 100048 China Graduate School for International Development and Cooperation Hiroshima University Higashi-Hiroshima 739-8529 Japan）

It is important to understand how land use change impacts groundwater recharge,especially for regions that are undergoing rapid urbanization and there is limited surface *** this study,the hydrological processes and re-charge ability of various land use types in Guishui River Basin,China(in Beijing Municipality) were *** impact of land use change was investigated based on water balance modeling,WetSpass and *** results indicate that groundwater recharge accounts for only 21.16% of the precipitation,while 72.54% is lost in the form of *** annual-lumped groundwater recharge rate decreases in the order of cropland,grassland,urban land,and *** use change has resulted in a decrease of 4 × 106 m3 of yearly groundwater recharge in the study area,with a spatially averaged rate of 100.48 mm/yr and 98.41 mm/yr in 1980 and 2005,*** variation has primarily come from an increase of urban area and rural settlements,as well as a decrease of cropland.

关键词：土地利用变化地下水补给流域中国土地利用类型快速城市化地下水回灌区域地下水

circPVT1 promotes silica-induced epithelial-mesenchymal transition by modulating the miR-497-5p/TCF3 axis

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Journal of Biomedical Research 2024年第2期38卷 163-174,I0011-I0015页

作者： Siyun zhou Yan Li Wenqing Sun Dongyu Ma Yi Liu demin Cheng Guanru Li Chunhui Ni Department of Occupational Medical and Environmental Health Key Laboratory of Modern Toxicology of Ministry of EducationCenter for Global HealthSchool of Public HealthNanjing Medical UniversityNanjingJiangsu 211166China Biomedical Publications Center Nanjing Medical UniversityNanjingJiangsu 211166China Gusu School Nanjing Medical UniversityNanjingJiangsu 211166China

Epithelial-mesenchymal transition(EMT)is a vital pathological feature of silica-induced pulmonary ***,whether circRNA is involved in the process remains *** present study aimed to investigate the role of circPVT1 in the silica-induced EMT and the underlying *** found that an elevated expression of circPVT1 promoted EMT and enhanced the migratory capacity of silica-treated epithelial *** isolation of cytoplasmic and nuclear separation assay showed that circPVT1 was predominantly expressed in the *** immunoprecipitation assay and RNA pull-down experiment indicated that cytoplasmic-localized circPVT1 was capable of binding to ***,we found that miR-497-5p attenuated the silica-induced EMT process by targeting transcription factor 3(TCF3),an E-cadherin transcriptional repressor,in the silica-treated epithelial ***,these results reveal a novel role of the circPVT1/miR-497-5p/TCF3 axis in the silica-induced EMT process in lung epithelial *** validated,this finding may provide a potential theoretical basis for the development of interventions and treatments for pulmonary fibrosis.

关键词： silicosis epithelial-mesenchymal transition circPVT1 miR-497-5p TCF3

Ecohydrology from Concepts to On-ground Actions: Report of Special Side Event on Ecohydrology—An Interdisciplinary Challenge, January 5–7, 2009 in Bangkok, Thailand

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Chinese Geographical Science 2009年第2期19卷 194-194,F0003页

作者： zhou demin Shahbaz KHAN Northeast Institute of Geography and Agroecology Chinese Academy of Sciences Changchun 130012 China Sustainable Water Resources Development and Management Section Division of Water Sciences UNESCO 1 rue Miollis 75015 Paris France

International Hydrological Programme VII (IHP-VII) directs the research objectives of hydrologists all over the world from 2008 to 2013. As a key programme contributed to the IHP VII, UNESCO's Ecohydrology Programme (EHP) has evolved into a trans-disciplinary scientific programme to analyze dynamic relationships between hydrological, social and ecological systems. Twenty international experts from 12 countries were invited

关键词：生态水文学跨学科曼谷泰国联合国教科文组织地面生态系统综合知识