Variation in top soil temperature on multiple temporal scales and its influencing factors for an urban riparian zone in summer

doi:10.7523/j.issn.2095-6134.2016.06.007

Abstract

Abstract:

This study investigated the variation in the soil temperature in the top 5 cm of the soil on multiple temporal scales and its driving factors for an urban riparian zone in summer. Wavelet analysis showed that the top soil temperature varied within multiple domains of temporal scale. The variation in the top soil temperature on small temporal scales (daily, ten-day, and twenty-day) was mainly due to the variation in total solar radiation, while on large temporal scales (monthly and seasonal) it was mainly influenced by vegetation composition and configuration. Firstly, plant growth had significant effects on top soil temperature. Vegetation coverage and height and tree leaf biomass played different roles in variation in the top soil temperature when vegetation types were different. Secondly, the top soil temperature was also influenced by vegetation type and canopy structure as vegetation coverages were similar. In addition, compared with the broad-leaved trees, the coniferous trees had more noticeable cooling effect.

Key words: domain of temporal scale, wavelet analysis, aboveground plant growth, vegetation type, canopy structure

CLC Number:

X821

ZHENG Xiaorou, ZHANG Na. Variation in top soil temperature on multiple temporal scales and its influencing factors for an urban riparian zone in summer[J]. , 2016, 33(6): 758-768.

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