首页> 外文会议>International Conference on Agro-Geoinformatics >Regional drought monitoring using phenologicallytuned biomass production estimates from SPOTVEGETATION FAPAR
【24h】

Regional drought monitoring using phenologicallytuned biomass production estimates from SPOTVEGETATION FAPAR

机译:利用Spotveitation Fapar的PhotogicaltiveTuny生物量产生估计的区域干旱监测

获取原文
获取外文期刊封面目录资料

摘要

Monitoring the impact of drought on vegetation conditions is a critical activity for assessing food security in semi-arid and arid countries in Africa. Remote sensing from space offers a unique opportunity to obtain consistent and timely information over large and inaccessible areas where field observations are scattered, inhomogeneous or frequently unavailable. In this study we outline a remote sensing method to estimate the probability of experiencing a biomass production deficit during the on-going season based on the statistical analysis of Earth Observation data. The method is based on the extraction of vegetation phenology from SPOT-VEGTATION time series of the Fraction of Absorbed Photosynthetically Active Radiation (FAPAR) and the subsequent computation of seasonally cumulated FAPAR as a proxy of vegetation gross primary production. Forecast of the overall seasonal performances, expressed in terms of probability of experiencing a critical deficit, are updated regularly whenever a new satellite observation is made available. Examples of application in the Sahel are discussed in this contribution.
机译:监视干旱对植被状况的影响是在半干旱和干旱国家评估非洲粮食安全的重要活动。从空间提供遥感一个独特的机会,以获得在那里实地观察分散,不均匀或经常得不到大,交通不便地区一致的和及时的信息。在这项研究中,我们概述了基于估计地球观测数据的统计分析正在进行的赛季中经历了生物量生产赤字的概率的遥感方法。该方法是基于植被物候从SPOT-VEGTATION时间序列吸收光合有效辐射(FAPAR)和季节性累积FAPAR的植被总初级生产力的一个代理的后续计算的分数的提取。预测的整体季节性演出,在经历了一个关键的赤字概率表示,每当有新的卫星观测提供定期更新。萨赫勒应用的例子在这方面的贡献进行讨论。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号