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| 内蒙古半干旱草原土壤－植被－大气相互作用综合研究 | |
| 引用本文： | 吕达仁,陈佐忠,陈家宜,王庚辰,季劲钧,陈洪滨,刘钟龄.内蒙古半干旱草原土壤－植被－大气相互作用综合研究[J].气象学报,2005,63(5):571-593. |
| 作者姓名： | 吕达仁 陈佐忠 陈家宜 王庚辰 季劲钧 陈洪滨 刘钟龄 |
| 作者单位： | 1. 中国科学院大气物理研究所,LAGEO,北京,100029 2. 中国科学院植物研究所,北京,100093 3. 北京大学物理学院大气科学系,北京,100871 4. 内蒙古大学资源研究所,呼和浩特,010021 |
| 基金项目： | 国家自然科学基金重大项目(49790020),中国科学院重大项目(BKZ951) |
| 摘 要： | 为深化对中纬度半干旱草原气候-生态相互作用过程、机制及其对全球变化的响应与贡献的认识,一项名为“内蒙古半干旱草原土壤-植被-大气相互作用(IMGRASS)”的基金重大项目于1997~2001年在内蒙古锡林郭勒草原执行。IMGRASS计划在1998年草原生长季节在所选定的以典型草原为主,包括草甸草原、稀疏沙地草原等在内的中尺度试验区开展了多点、多要素的综合观测。观测内容包括土壤、植被、大气的相关要素和发生于地-气界面的潜热、感热通量,还包括N2O,CH4,CO2等微量气体交换量、辐射与降水分布。除1998年中尺度观测试验外,1999~2001年在代表性地点进行了微量气体收支、遥感和沙尘天气相关的专项观测,结合草原站已进行的长期监测资料,分析气候-生态长期相互作用,特别是人类活动干预的影响。在分析观测结果的基础上,对该地区的气候-生态相互作用进行了数值模拟研究。文章简要介绍IMGRASS计划目标和初步成果,包括:计划目标与实验区背景;半干旱草原不同地表陆气相互作用特征;浑善达克沙地及其沙尘气溶胶特征;半干旱草原温室气体收支与碳循环测量分析;人类活动干预下半干旱草原生态退化与恢复演替规律;半干旱草原的遥感测量。 |
| 关 键 词： | 陆气相互作用 IMGRASS 半干旱草原 沙漠化 温室气体 中尺度模拟 BAHC 气候-生态相互作用。 |
| 收稿时间： | 8/8/2005 12:00:00 AM |
| 修稿时间： | 2005年8月8日 |
STUDY ON SOIL-VEGETATION-ATMOSPHERE INTERACTION IN INNER-MONGOLIA SEMI-ARID GRASSLAND |
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| Lu Daren,Chen Zuozhong,Chen Jiayi,Wang Gengchen,Ji Jinjun,Chen Hongbin and Liu Zhongling.STUDY ON SOIL-VEGETATION-ATMOSPHERE INTERACTION IN INNER-MONGOLIA SEMI-ARID GRASSLAND[J].Acta Meteorologica Sinica,2005,63(5):571-593. | |
| Authors: | Lu Daren Chen Zuozhong Chen Jiayi Wang Gengchen Ji Jinjun Chen Hongbin and Liu Zhongling |
| Institution: | Institute of Atmospheric Physics(LAGEO), CAS, Beijing 100029;Institute of Botany, CAS, Beijing 100093;Dept. of Atmospheric Science, Peking Univ. Beijing 100871;Institute of Atmospheric Physics(LAGEO), CAS, Beijing 100029;Institute of Atmospheric Physics(LAGEO), CAS, Beijing 100029;Institute of Atmospheric Physics(LAGEO), CAS, Beijing 100029;Institute of Natural Resources, Inner Mongolia Univ. Huhhot, Inner Mongolia 010021 |
| Abstract: | To understand the processes and mechanisms of soil-vegetation-atmosphere interaction in Inner Mongolia semi-arid grassland,a project named "Inner Mongolia Semi-arid Grassland Soil-Vegetation-Atmosphere Interaction(IMGRASS)",which is supported by the National Natural Science Foundation of China(NSFC) as a major project,has been conducted in 1997-2001.Within IMGRASS,a coordinated meso-scale field observation was conducted in growing season of 1998.The experimental sites are located in Xilingol semi-arid grassland.The surface types include Xilingol typical steppe and Sandy Land Hunshandake,a kind of mid-latitude savanna. The topography is Mongolia plateau with mild complex terrain.The coordinated observation is consisted of related parameters as surface and boundary layer meteorological parameters,surface sensible and latent heat flux,N_2O,CH_4,and CO_2 flux of the surface,radiation flux and precipitation at four core stations and other sites with simultaneous vegetation and soil parameters.In addition, remote sensing observation and GHG flux observation were made in certain sites during 1999-2003,including specific observation for dust aerosols in spring 2001.Based on field observation and regional climate data,process analysis and numerical simulations were made for various characteristics of land surface-atmosphere coupling of mid-latitude semi-arid grassland,long-term variation of grassland ecological-climate interaction,impact of human activities to ecology and desertification were and made.Short summary about the project and the preliminary results are presented. |
| Keywords: | Land surface-atmosphere interaction IMGRASS Semi-arid grassland Green house gases Desertification Inner Mongolia |
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