| 基于改进光能利用率模型呼伦贝尔植被净初级生产力时空格局 |
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| 引用本文： | 于勇,冯朝阳,陈艳梅,叶生星.基于改进光能利用率模型呼伦贝尔植被净初级生产力时空格局[J].干旱区资源与环境,2013(3):154-159. |
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| 作者姓名： | 于勇 冯朝阳 陈艳梅 叶生星 |
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| 作者单位： | 北京师范大学水科学研究院;地下水污染控制与修复教育部工程研究中心;中国环境科学研究院国家环境保护区域生态过程与功能评估重点实验室;河北师范大学资源与环境科学学院河北省环境演变与生态建设重点实验室;北京林业大学水土保持学院 |
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| 基金项目： | 国家环境保护公益性行业科研专项(200909021)资助 |
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| 摘 要： | 呼伦贝尔作为全球气候变化的敏感区域,分析其植被生产力时空格局具有重要科学意义。简化光能利用率模型的水分胁迫系数,基于E0S/MODIS卫星遥感资料,研究呼伦贝尔地区植被净初级生产力(NPP)时空格局。结果表明:1)研究区内大兴安岭林区单位面积NPP为高值区,呼伦贝尔草原西部NPP为低值区,林草交错区和农牧交错区NPP介于林区和草原区之间;2)2000年-2008年4类土地覆被类型单位面积NPP为下降趋势;3)呼伦贝尔西部草原、呼伦贝尔林草交错区单位面积NPP主要受降水量的影响,而大兴安岭林区和岭东农牧交错区主要受生长季气温的影响。
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| 关 键 词： | 光能利用率模型 净初级生产力 时空格局 |
The spatial and temporal patterns of vegetation net primary productivity(NPP) in Hulunbeier based on improved light utilization model |
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| YU Yong,FENG Chaoyang,CHEN Yanmei,YE Shengxing.The spatial and temporal patterns of vegetation net primary productivity(NPP) in Hulunbeier based on improved light utilization model[J].Journal of Arid Land Resources and Environment,2013(3):154-159. |
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| Authors: | YU Yong FENG Chaoyang CHEN Yanmei YE Shengxing |
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| Institution: | 1.College of Water Sciences,Beijing Normal University,Beijing 100875,P.R.China; 2.Engineering Research Center of Groundwater Pollution Control and Remediation,Ministry of Education,Beijing 100875,P.R.China; 3.State Environmental Protection Key Laboratory of Regional Eco-process and Function Assessment,Chinese Research Academy of Environmental Sciences,Beijing 100012,P.R.China; 4.College of Resource and Environment Sciences,Hebei Key Laboratory of Environmental Change and Ecological Construction,Hebei Normal University,Shijazhuang 050016,P.R.China;5.School of Soil and Water Conservation,Beijing Forestry University,Beijing 10083,P.R.China) |
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| Abstract: | The Hulunbeier region is the sensitive area to global climate change.It has great scientific significance to study on spatial and temporal pattern variations of vegetation NPP.Simplified the water stress coefficient of the light utilization model was used to study the spatial and temporal pattern variations of vegetation NPP in Hulunbeier based on EOS/MODIS satellite remote sensing data.The results showed that:(1)NPP per unit area Daxinganling forest region of belongs to the high value area,that of the west of Hulunbeier grassland is of value area,and that of the area between forest and grassland is of between the obove two.(2) NPP per unit area of 4 types land-use show downward trends from 2000 to 2008.(3) NPP per unit area is mainly affected by the precipitation in the Hulunbeier western grasslands and the ecotone of grass and forest in the western of Daxinganling,and affected mainly by the growing season temperature in in Daxinganling forest region and pastoral area in the eastern of Daxinganling. |
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| Keywords: | improved light utilization model net primary productivity(NPP) the Spatial and temporal pattern |
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