Analyzing the relationship between land surface temperature and vegetation cover: a case of typical grassland in North China

Wenjiang Zhang; Zhiqiang Gao

doi:10.1117/12.730665

9 October 2007 Analyzing the relationship between land surface temperature and vegetation cover: a case of typical grassland in North China

Wenjiang Zhang, Zhiqiang Gao

Author Affiliations +

Proceedings Volume 6679, Remote Sensing and Modeling of Ecosystems for Sustainability IV; 66790T (2007) https://doi.org/10.1117/12.730665
Event: Optical Engineering + Applications, 2007, San Diego, California, United States

Abstract

Land surface temperature (LST) is widely thought to closely relate with vegetation cover (often expressed with VI, i.e. vegetation index), and the negative LST/VI relationship is often used to estimate LST. However, this issue hasn't reached academic agreement yet as the LST/VI relation isn't linear, static and independent of other factors. This study examined the temporal variation of LST/VI relation and its link with soil moisture with multi-phase MODIS products. The result indicates that in the regions of high latitude where the condition of thermal energy is among ecologic limiting factors, the negative LST/VI relation doesn't hold true. The study also proves that the LST/VI association depends on soil moisture, which further complicates their relationship. This examination underlines that when the LST/VI slope is used to estimate LST, the uncertainty of LST/VI relation and the influence of soil moisture should both be carefully take into accounts.

Citation Download Citation

Wenjiang Zhang and Zhiqiang Gao "Analyzing the relationship between land surface temperature and vegetation cover: a case of typical grassland in North China", Proc. SPIE 6679, Remote Sensing and Modeling of Ecosystems for Sustainability IV, 66790T (9 October 2007); https://doi.org/10.1117/12.730665

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KEYWORDS

Vegetation

MODIS

Climatology

Near infrared

Soil science

Short wave infrared radiation

Temperature metrology

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