Spatial Analysis of Terrain-Impacted Photosynthetic Active Radiation (PAR) Using MODIS Data

    Authors

    Z. Q. Gao; X. P. Xie; W. Gao;N. B. Chang

    Comments

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    Abbreviated Journal Title

    GISci. Remote Sens.

    Keywords

    NET PRIMARY PRODUCTION; DIGITAL ELEVATION MODELS; REMOTELY-SENSED DATA; SOLAR-RADIATION; SATELLITE ESTIMATION; ATMOSPHERE PRODUCTS; PHYSICAL; MODEL; EARTHS SURFACE; IRRADIANCE; VALIDATION; Geography, Physical; Remote Sensing

    Abstract

    This paper presents the spatial distribution of photosynthetic active radiation (PAR) using an atmospheric radiative transfer model under terrain impacts. The potential of the model for improved understanding of PAR impacts on ecosystem dynamics is demonstrated with the aid of MODIS (Moderate-resolution Imaging Spectroradiometer) data, using the Haihe Plain of China as a case study. Various types of MODIS data were aggregated in support of the modeling work at the regional scale. Findings clearly indicate that terrain factors do affect the estimation of instantaneous PAR significantly. Different relationships between PAR and elevation may be classified based on positive correlation, negative correlation, and no correlation. In addition, while there are different relations between PAR and slope, there is no significant correlation between PAR and aspect.

    Journal Title

    Giscience & Remote Sensing

    Volume

    48

    Issue/Number

    4

    Publication Date

    1-1-2011

    Document Type

    Article

    Language

    English

    First Page

    501

    Last Page

    521

    WOS Identifier

    WOS:000296921300003

    ISSN

    1548-1603

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