Monitoring of soil moisture and vegetation water content variations in boreal forest from C-band SAR data

被引：0

作者：

Pulliainen, J ^{[1
]}

Hari, P ^{[1
]}

Hallikainen, M ^{[1
]}

Patrikainen, N ^{[1
]}

Perämäki, M ^{[1
]}

Kolari, P ^{[1
]}

机构：

[1] Helsinki Univ Technol, Lab Space Technol, FIN-02015 Helsinki, Finland

来源：

IGARSS 2004: IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM PROCEEDINGS, VOLS 1-7: SCIENCE FOR SOCIETY: EXPLORING AND MANAGING A CHANGING PLANET | 2004年

关键词：

forest remote sensing; soil moisture;

D O I：

暂无

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The response of ERS-2 SAR to changes in soil and forest canopy moisture is investigated at a boreal forest test region in Finland. An inversion approach to estimate moisture characteristics from SAR data is applied. The method requires that a priori information on forest biomass (stem volume) and soil type distribution is available. The inversion technique provides estimates that are here, in addition to backscattering signatures, directly compared with daily in situ moisture values. The results indicate that time-series of C-band radar observations can be used for the monitoring of boreal forest moisture variations. Especially, the detection of the driest and the wettest conditions on mineral soil sites appears to be a feasible application even for single channel radar. The obtained SAR-based soil moisture estimates showed an RMSE level of 6 %-units against the in situ data for pine-dominated mineral soil sites.

引用

页码：1013 / 1016

页数：4

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