陆地生态系统碳循环及其机理研究的地球信息科学方法初探

doi:10.11821/yj2003040001

地理研究 ›› 2003, Vol. 22 ›› Issue (4): 397-405.doi: 10.11821/yj2003040001

• 论文 • 下一篇

陆地生态系统碳循环及其机理研究的地球信息科学方法初探

刘纪远, 于贵瑞, 王绍强, 岳天祥, 高志强

中国科学院地理科学与资源研究所, 北京 100101

收稿日期:2003-05-26 修回日期:2003-06-18 出版日期:2003-08-15 发布日期:2003-08-15
作者简介:刘纪远(1947-),男,广东惠州人,中国科学院地理科学与资源研究所所长,研究员,博士生导师, 国家973计划“中国陆地生态系统碳循环及其驱动机制研究”项目首席科学家。主要从事资源环境遥感与土地利用/覆被变化研究。
基金资助:
国家973计划(2002CB412500);中科院地理科学与资源研究所知识创新工程主干科学计划(IOGCXE0202)

A method of geo-information science for studying carbon cycle and its mechanism of terrestrial ecosystems

LIU Ji-yuan, YU Gui-rui, WANG Shao-qiang, YUE Tian-xiang, GAO Zhi-qiang

Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China

Received:2003-05-26 Revised:2003-06-18 Online:2003-08-15 Published:2003-08-15

摘要/Abstract

摘要：

针对陆地生态系统碳汇/源的时空格局、碳循环过程的驱动机制及未来情景等前沿科学问题,提出陆地碳循环研究的地球信息科学方法,采用陆地生态系统碳通量/储量与碳循环过程的综合网络观测、生物过程的适应性实验研究以及河流碳输运过程研究为支撑系统的自下而上途径、与以土地利用/土地覆被变化和对地观测数据生态参量反演为基础的自上而下研究途径、经相互验证和尺度转换模型实现有机结合的研究方法,开展综合观测、调查、比对分析、模拟和评价研究,把握陆地生态系统碳循环的格局与过程规律,辨析自然和人为因素对陆地生态系统碳循环过程的影响,探讨全球气候变化条件下陆地生态系统碳循环过程的演变趋势。

关键词: 陆地生态系统, 碳循环, 地球信息科学, 全球变化

Abstract:

There exists about 1.4～1.7GtC missing sink in the global carbon budgets. The missing sink might happen in terrestrial biosphere and coastal continental shelf. However, this guess is lack of support from scientific observation data and research methods. Progress in geo-information science is paving way for studying carbon cycle and its mechanisms of terrestrial ecosystems. To address the scientific issues such as temporal and spatial pattern of terrestrial ecosystem carbon sink, and driving mechanism and scenarios of carbon cycle, this paper proposes a method of geo-information science for studying carbon cycle of terrestrial ecosystems.Bottom-up approach and top-down approach are combined by means of scaling models. The bottom-up approach is based on observations of comprehensive network of carbon storage and carbon cycle process of terrestrial ecosystems, adaptive experiments of biological processes, and researches on carbon transportation processes of rivers. the top-down approach is based on detecting land cover change and retrieving ecological parameters by using satellite data. Retrieval models of carbon budgets are developed by means of the capacity of satellite remote sensing that can frequently supply surface information of geographical processes and ecological processes. On the basis of analyzing data-at-points collected by stations of Chinese Ecosystem Research Network, stations of Chinese Forest Ecosystem Research Network, and observation stations of HINAFLUX, combined with the retrieval models, a numerical simulation model of terrestrial ecosystem carbon cycle is constructed by means of surface theorem, grid generation method and grid computing technique. Pattern and process of carbon cycle are to be simulated; natural and human impacts on carbon cycle of terrestrial ecosystems are to be analyzed; and evolution trends of carbon cycle process of terrestrial ecosystems are to be discussed under the condition of global climate change.

Key words: terrestrial ecosystem, carbon cycle, geo-information science, global climate change

PACS:

X171.1

刘纪远, 于贵瑞, 王绍强, 岳天祥, 高志强. 陆地生态系统碳循环及其机理研究的地球信息科学方法初探[J]. 地理研究, 2003, 22(4): 397-405.

LIU Ji-yuan, YU Gui-rui, WANG Shao-qiang, YUE Tian-xiang, GAO Zhi-qiang. A method of geo-information science for studying carbon cycle and its mechanism of terrestrial ecosystems[J]. GEOGRAPHICAL RESEARCH, 2003, 22(4): 397-405.

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陆地生态系统碳循环及其机理研究的地球信息科学方法初探

A method of geo-information science for studying carbon cycle and its mechanism of terrestrial ecosystems

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