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Land-Cover Observations as Part of a Global Earth Observation System of Systems (GEOSS): Progress, Activities, and Prospects

机译:作为全球地球观测系统(GEOSS)一部分的土地覆盖观测:进展,活动和前景

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摘要

The international land-cover community has been working with GEO since 2005 to build the foundations for land-cover observations as an integral part of a Global Earth Observation System of Systems (GEOSS). The Group on Earth Observation (GEO) has provided the platform to elevate the societal relevance of land cover monitoring and helped to link a diverse set of global, regional, and national activities. A dedicated 2007-2009 GEO work plan task has resulted in achievements on the strategic and implementation levels. Integrated Global Observations of the Land (IGOL), the land theme of the Integrated Global Observation Strategy (IGOS), has been approved and is now in the process of transition into GEO implementation. New global land-cover maps at moderate spatial resolutions (i.e., GLOBCOVER) are being produced using guidelines and standards of the international community. The Middecadal Global Landsat Survey for 2005-2006 is extending previous 1990 and 2000 efforts for global, high-quality Landsat data. Despite this progress, essential challenges for building a sustained global land-cover-observing system remain, including: international cooperation on the continuity of global observations; ensuring consistency in land monitoring approaches; community engagement and country participation in mapping activities; commitment to ongoing quality assurance and validation; and regional networking and capacity building.
机译:自2005年以来,国际土地覆被界一直与GEO合作,为土地覆被观测奠定基础,作为全球地球观测系统系统(GEOSS)的组成部分。地球观测小组(GEO)提供了一个平台来提高土地覆盖监测的社会意义,并有助于将一系列全球,区域和国家活动联系起来。 2007-2009年的GEO专门工作计划任务取得了战略和实施方面的成就。全球综合土地观测战略(IGOS)的土地主题全球土地综合观测(IGOL)已经获得批准,目前正在过渡到GEO实施。正在使用国际社会的指导方针和标准制作具有中等空间分辨率的新的全球土地覆盖图(即GLOBCOVER)。 2005-2006年的全球十年中期Landsat调查正在扩展1990年和2000年以前针对全球高质量Landsat数据所做的工作。尽管取得了这些进展,但建立可持续的全球土地覆盖观测系统仍然面临着重大挑战,包括:全球观测连续性方面的国际合作;确保土地监测方法的一致性;社区参与和国家参与制图活动;对持续的质量保证和确认的承诺;以及区域网络和能力建设。

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