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SPATIAL ANALYSIS ON ECOSYSTEM DEGRADATION OF GRASSLAND IN XILINGUOLE WITH RS AND GIS

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SPATIAL ANALYSIS ON ECOSYSTEM DEGRADATION OF GRASSLAND IN XI...

博斯腾湖流域山区地表径流对近期气候变化的响应

第三世界生态高峰会

作者： Feng X.M.~(*1. Zhao Y.S.~2 ~1.state {1. laboratory of Urban and Regional Ecology,Research Center for Eco-Environmental sciences.chinese academy of sciences.Beijng 1.0085,China ~2 College of Resources and Environment,Graduate School of the chinese Academ of sciences,Beijing 1.0049,China

Grassland in Inner Mongolia is vulnerable *** is an important belt to protect North China from sandy weather,but it has been degraded in recent decades for the climate variety and human *** this paper,CENTURY model was introduced to describe dynamic of grassland in Xilinguole,which lays in the middle of Inner *** model was validated with field data from 1.91.to 1.95 of Xilinhaote and Zhenglanqi observation *** relation between the modeled aboveground biomass （AGB） and the field data in Xilinhante is y=0.8783x,with R=*** is y=1.0854x in Zhenglanqi,with R=*** shews CENTURY is applicable in *** order to get the dynamic of the whole research area,a spatial database was built based on *** included data such as temperature,precipitation,AGB,soil water content （SWC）,vegetation cover and land use map,with AGB and SWC inversed from remote {1. *** AGB from 2001.to 2002 was *** modeled value on August,2002 was compared with the remote {1. investigated *** think difference between them was mainly caused by failing in considering the human *** the spatially grazing distribution of the research area was got with an iterative adjusting *** shows that there is grazing on south of Xilinhaote, southwest of Xiwuzhumuqin and northwest of Keshiketengqi;while grazing in Abagaqi is *** can be concluded that remote {1. investigated surface characters work at two points in this ***,it was input parameters of CENTURY,acting as driving factor of the ***,it was the compared value of the modeled one,acting as the calculating control factor.

关键词： AGB SPATIAL ANALYSIS ON ECOSYSTEM DEGRADATION OF GRASSLAND IN XILINGUOLE WITH RS AND GIS SWC

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山地学报 2010年第2期28卷 206-211页

作者：孙占东 Christian Opp 王润高前兆中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室马尔堡大学地理系中国科学院城市环境研究所中国科学院寒区与旱区环境与工程研究所

近年来,在全球和区域气候变化影响下,新疆博斯腾湖主要产流区开都河出山径流呈现异常波动,引起气候变化研究的关注。鉴于产流区复杂地形和径流补给特征以及传统观测资料的不足,借助雷达、微波及可见光等多源遥感数据从山区降水、积雪和... 详细信息

近年来,在全球和区域气候变化影响下,新疆博斯腾湖主要产流区开都河出山径流呈现异常波动,引起气候变化研究的关注。鉴于产流区复杂地形和径流补给特征以及传统观测资料的不足,借助雷达、微波及可见光等多源遥感数据从山区降水、积雪和冰川等方面与出山径流变化关系进行比较来揭示径流突变原因。结果表明,产流区平均径流深与降水量关系的转变是引起出山径流异常波动直接原因;进一步的冰川变化分析显示,径流深的波动主要由冰川融水径流变化引起:20世纪80年代中期后的温度上升加速了山顶冰川消融,导致1.87～2002年的径流增加和湖泊水位升高;1.84～2000年间,流域山顶冰川面积消退近40%,随着分布在较低海拔,对温度升高最敏感的中小冰川的消失,冰雪消融带来的径流增加效应开始减弱;2002年后,在流域气温、降水等变化并不显著的情况下,出山径流量却急剧降低,反映了特定冰川分布条件地区在气候变暖中融水径流先升后降的现象。

关键词：天山博斯腾湖气候变化地表径流水文响应

A contrast of two typical LUCC processes and their driving forces in oases of arid areas: A case study of Sangong River Watershed at the northern foot of Tianshan Mountains

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science China Earth {1. 2007年第S1期 65-75页

作者： TANG FaShu1.2, CHEN Xi1. LUO GePing1. LIN Qing1.2 & LIU HaiLong1.2 1.Xinjiang institute of Ecology and Geography, {1., ürümqi 83001., China 2 Graduate University of {1., Beijing 1.0049, China

Aerial photographs taken in 1.78 and 1.87, Landsat TM images in 1.98 as well as soil, hydrology and socio-economic data for the oases in Sangong River Watershed were processed by remote {1. (RS) and Geographic Information System (GIS). There are two typical agricultural land uses in oases, Farm-based Land Use with large-scale intensified agricultural activities (FLU) and Household Respon-sibility-based Land Use with small-scale activities (HRLU). The Index Model of Land Use/Land Cover Change (LUCC), Weighted Index Sum (WIS) and logistic stepwise regression model were estab-lished to contrast the two typical LUCC processes and their driving forces. The land use patterns were dominated by cropland and grassland for the entire region, and cropland, residential and industrial land were increasing stably. In the HRLU areas, woodland and grassland declined dramatically, but in the FLU areas, grassland decreased only by 12.0%, whereas woodland increased by 1..7%. LUCC was stronger in the earlier stage (1.78-1.87) than in the later stage (1.87-1.98) for the entire region. LUCC was more intense in the HRLU areas than in the FLU areas during the entire period (1.78-1.98). Policy was a key factor in the land use change, and water resources were a precondition in land use. Under the control of policy and water resources, the main human driving factors included population and economy, and the main natural restrictions were soil fertility and groundwater depth. Human driving factors controlled the land change in the HRLU areas, but natural restriction factors dominated in the FLU areas. In the mean time, intensification of LUCC in the region had some spatiotemporal implications with a fluctuation of impact factors.

关键词： oases land use driving forces Sangong River logistic

Spatial distribution analysis of landslides triggered by 2008.5.12.Wenchuan Earthquake,China

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Spatial distribution analysis of landslides triggered by 200...

Advances in carbon flux observation and research in Asia

中国科学院地质与地球物理研究所第十届(201.年度)学术年会

作者： Shengwen Qi~(a,b,*),Qiang Xu~b,Hengxing Lan~c,Bing Zhang~d,Jianyou Liu~(a,1) a key Lab.of Engineering Geomechanics,institute of Geology and Geophysics,chinese academy of sciences,Beijing,China,P.O.Box 9825,Chaoyang area,Beijing,100029,China b state key Lab.of Geo-hazard Prevention and Geo-environment Protection,Chengdu University of Technology,Chengdu,610059,China c state key laboratory of Resources and Environmental System,institute of Geographic sciences and Natural Resources Research,chinese academy of sciences,Beijing,1.01.1.China d Centre for Earth Observation and Digital Earth,chinese academy of sciences,Beijing,100190,China

The 2008.5.12.Wenchuan Earthquake(seismic magnitude M 7.9 according to the USGS)triggered a great number of landslides.A spatial database of landslides is built by interpreting the {1. sensing(RS)data which covers 1. counties severely damaged by the earthquake with area of about 31.686.12.*** geological settings of the study area are detailed mapped including geologic structure and *** digital elevation model(DEM)of the study area with resolution of 30 m×30 m is presented to address the topographic *** between the occurrence of landslides with geological settings i.e. active faults(the coseismic surface ruptures),geological unit,slope gradient,slope elevation as well as slope aspect are analyzed using spatial modeling in GIS with the aids of field *** can be concluded that the distance to the causative faults and slope gradient are much more important than other factors. Landslides are clustered distributed along the causative faults of F2 and F3,and landslides incidence are dramatically decreasing with the increasing of the distance to the causative *** landslides incidence has an obvious increase near the active faults *** concentration(LC,landslides/km)has an obvious exponent increase with slope ***,LC has no obvious relationship with geological unit and slope elevation;the difference of LC value in each geological unit(each slope elevation category)maybe have been the result affected by slope gradient for each geological unit(each slope elevation category)and distance of each geological unit(each slope elevation category)to causative fault *** map reflects the incidence of landslides in some degree,and LC increases dramatically with Intensity increasing, almost all landslides occurred in the region aboveⅥdegree. Statistics result also indicates that in the near field of causative faults,landslides tend to have the initial sliding direction similar to the movement

关键词： 2008.5.12.Wenchuan Earthquake Slope Landslide Spatial analysis

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science China Earth {1. 2005年第Z1期48卷 1-16页

作者： YU Guirui, ZHANG Leiming, SUN Xiaomin, FU Yuling & LI Zhengquan Synthesis Center of chinese Ecosystem Research Network (CERN), {1. of Geographic sciences and Natural Resources Research, chinese academy of sciences, Beijing 1.01.1. China Graduate School of the chinese academy of sciences, Beijing 1.0039, China Synthesis Center of chinese Ecosystem Research Network CERN Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China Synthesis Center of chinese Ecosystem Research Network (CERN) Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China Graduate School of the chinese academy of sciences Beijing 100039 China

As an important component of FLUXNET, Asia is increasingly becoming the hotspot in global carbon research for its vast territory, complex climate type and vegetation diversity. The present three regional flux observation networks in Asia (i.e. AsiaFlux, KoFlux and ChinaFLUX)have 54 flux observation sites altogether, covering tropic rainforest, evergreen broad-leaved forest, broad-leaved and coniferous mixed forest, shrubland, grassland, alpine meadow and cropland ecosystems with a latitudinal distribution from 2°N to 63°N. Long-term and continuous fluxes of carbon dioxide, water vapor and energy between the biosphere and atmosphere are mainly measured with eddy covariance technique to (1. quantify and compare the carbon, water and energy budgets across diverse ecosystems; (2) quantify the environmental and biotic controlling mechanism on ecosystem carbon, water and energy fluxes; (3) validate the soil-vegetation-atmosphere model; and (4) serve the integrated study of terrestrial ecosystem carbon and water cycle. Over the last decades, great advancements have been made in the theory and technology of flux measurement, ecosystem flux patterns, simulation and scale conversion by Asian flux community. The establishment of ChinaFLUX has greatly filled the gap of flux observation and research in Eurasia. To further promote the flux measurement and research,accelerate data sharing and improve the data quality, it is necessary to present a methodological system of flux estimation and evaluation over complex terrain and to develop the integrated research that combines the flux measurement, stable isotope measurement, remote {1. observation and GIS technique. It also requires the establishment of the Joint Committee of Asian Flux Network in the Asia-Pacific region in order to promote the cooperation and communication of ideas and data by supporting project scientists, workshops and visiting scientists.

关键词： terrestrial ecosystem, flux observation and research, carbon flux, eddy covariance, Asia.

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南海卫星遥感海表湍流热通量资料的评估

气候与环境研究 2018年第3期23卷 332-340页

作者：封宝鑫刘海龙林鹏飞王启中国海洋大学海洋和气象学院山东青岛266100 中国科学院大气物理研究所大气科学和地球流体力学数值模拟国家重点实验室北京100029

利用现场观测资料、OAFlux的湍流热通量,评估了JOFURO(Japanese Ocean Flux Data Sets with use of remote {1. Observations)、HOAPS-2(Hamburg Ocean Atmosphere Parameters and Fluxes from Satellite data version 2)、GSSTF-2(Goddard Satellite-Based Surface Turbulent Fluxes version 2)3种卫星资料在南海区域的表现。3套卫星资料可以说各有千秋,总体而言JOFURO和GSSTF-2资料的空间分布和时间变化与OAFlux资料整体上较一致,但是这两套资料都在很大程度上低估了海盆平均的潜热和感热,前者低估约1.%~20%,后者则可以达到50%以上。HOAPS-2资料与现场观测资料有较好的一致性,但在时间变化上和其他资料的差异则较大,特别是感热方面,季节变化振幅、年际变化位相等都与其他资料不一致。通过比较我们发现,海南岛周边以及南海南部区域估算的潜热和感热释放偏小是造成整体偏小的主要原因。

关键词：卫星遥感湍流热通量潜热通量感热通量南海

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The Application of remote {1. Monitoring Method and Groundwater Model for Water Rights Management in Haihe River basin

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地学前缘 2009年第S1期16卷 26-26页

作者： Lijuan Xue~1.Xinjun Zhu~(1.2),Songqiu Bo~3,Jianxin Li~3,Wei Li~3,Wei Yang~1.1.Tianjin Lonwin Network science & Technology Development Co.Ltd,Tianjin 3001.1.China. 2.{1. laboratory of Water Cycle and Related land Surface Processes,institute of Geographic sciences and Natural Resources Research,chinese academy of science,Beijing 1.01.1.China 3.Haihe River Water Conservancy Commission of Ministry of Water Resources,Tianjin 3001.0,China

Groundwater is an important water resource in Haihe River basin,North *** number of aquifers that appear to be declining under conditions of groundwater overdraft is *** effectively manage the water resources,there is a strong scientific need to analyze the net use of this important water resource and to quantify the water rights allocation for improved understanding of the future water

关键词： remote sensing monitoring groundwater model water rights net groundwater use Haihe River basin

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Loess Deposition Rate in the Holocene in Northern Shaanxi,China

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Loess Deposition Rate in the Holocene in Northern Shaanxi,Ch...

Temporal-spatial characteristics of vegetation cover and desertification of China by using remote {1. data

201. Second IITA International Conference on Geoscience and {1. sensing (IITA-GRS 201.)

作者： Gang Liu key {1. of Geological Hazards on Three Gorges Reservoir Area,Ministry of Education,China Three Gorges University,Yichang,China state key {1. of Soil Erosion and Dryland Farming on the Loess Plateau,institute of Soil and Water Conservation,chinese academy of science and Ministry of Water Resources,Yangling,China Puling Liu state key {1. of Soil Erosion and Dryland Farming on the Loess Plateau,institute of Soil and Water Conservation,chinese academy of science and Ministry of Water Resources,Yangling,China Qiong Zhang Biotechnology Research Center of China Three Gorges University,Yichang,China

Soil loss tolerance should consider the conservation of the soil as a natural *** rates greater than loess deposition rate will cause soil depth ***,loess deposition rate must be determinable or predictable before they can be used as criteria for setting soil loss tolerance *** this study,radiocarbon dating was used to quantitatively study loess deposition rate in the Holocene in the Loess Plateau in northern *** average loess deposition rate of LC,YC1.and HS profile at three locations（Luochuan,Yanchang,and Hengshan） was 0.01.9 cm/a,0.01.3 cm/a,and 0.021. cm/a,***,a slope landform where LC2 profile located was reconstructed at about 12.00 a *** using radiocarbon age of soil,loess deposition rate and paleoclimate which was determined with magnetic susceptibility of soil ***,loess deposition rate was applied on assessment of soil erosion risk in study area and Yan’gou ***,this study could provide theoretical basis for determination of soil loss tolerance and assessment of soil erosion risk,also a new method for quantificational research on landform reconstruction.

关键词： loess deposition rate radiocarbon age soil loss tolerance landform reconstruction soil erosion risk paleoclimate

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Progress in Natural science:Materials International 2002年第1期 47-51+83页

作者： XU Xingkui , LIN Zhaohui, LI Jianping and ZENG Qingcun(LASG, institute of Atmospheric Physics, {1., Beijing 1.0029, China) LASG Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China

Based on the NOAA advanced very high resolution radiometer (NOAA-AVHRR) remote {1. data of 1.82 - 1.99, the normalized difference vegetation index (NDVI) reflecting the surface vegetation cover has been obtained. Using the empirical orthogonal function analysis, the temporal-spatial eigenvectors of NDVI are given, and the characteristics of the spatial distribution of vegetation cover and its temporal variation together with the desertification of China are analyzed. It is found that the surface vegetation cover has seriously deteriorated in most part of China since 1.95, along with the intensified desertification. All these are mainly caused by human activities although the climate change is responsible for the damage of surface vegetation cover to some extent.

关键词： remote {1. surface vegetation cover empirical orthogonal function normalized difference vegetation index.