Scale considerations in vegetation monitoring using AVHRR data
Scale considerations in vegetation monitoring using AVHRR data
复制标题
使用 AVHRR 数据进行植被监测时的尺度考虑
DOI：
10.1080/01431169208904269
复制
发表时间：
1992
影响因子：
3.4
通讯作者：
A. Belward
中科院分区：
文献类型：
--
作者：
J. Malingreau;A. Belward
摘要 先进甚高分辨率辐射计（AVHRR）是目前唯一能够提供全球日常数据可用于植被监测的可运行遥感系统。这些数据的分辨率单元尺寸范围为每侧约 1 到 20 公里，但每个分辨率的覆盖时间和空间范围是可变的。本文比较了农业和自然热带植被类型在不同分辨率下从 AVHRR 得出的归一化植被指数时间曲线。对于农业地区，生长季节的长度和与关键作物发育事件相关的主要坡度断裂在粗分辨率和精细分辨率下都同样清晰地显示出来。对曲线的详细检查揭示了景观结构随时间变化造成的差异。从不同空间分辨率的 AVHRR 数据得出的时间曲线表明，农业和自然景观的空间组织...
Abstract The Advanced Very High Resolution Radiometer (AVHRR) is currently the only operational remote sensing system capable of providing global daily data which can be used for vegetation monitoring. These data are available with resolution cell sizes ranging from around one to 20 km on a side, though the temporal and spatial extent of cover at each resolution is variable. In this paper Normalized Difference Vegetation Index temporal curves derived from AVHRR at different resolutions are compared over both agricultural and natural tropical vegetation types. For the agricultural regions the length of growing season and major breaks of slope associated with key crop development events are equally well shown at coarse and fine resolution. Detailed examination of the curves reveals differences thought to result from temporal changes in landscape structure. Temporal curves derived from AVHRR data at dilTerent spatial resolutions shows that the spatial organization of both agricultural and natural landscapes,...