Study on spectral absorption characteristics of vegetation in Nanhui Wetland of Yangtze River Estuary

doi:10.3969/j.issn.1001-909X.2018.02.007

Abstract

Abstract: The spectral absorption characteristics of vegetation are not only closely related to the growth of vegetation, but also affected by soil moisture and other factors. In this study , Phragmites australis, Spartina anglica and Scirpus mariqueter were taken as the research objects, which are the typical vegetation in Nanhui Wetland of Yangtze River Estuary. Based on the calculation of spectral characteristic parameters, their spectrum of absorption and deformation of PSDI values were analyzed. Finally, combining with the measured soil moisture, the correlation between PSDI values of three kinds of vegetation and soil moisture values were analyzed. The results show that the PSDI value of Spartina anglica is maximum, the PSDI value of Scirpus mariqueter is minimum, and that of Phragmites australis is somewhere in between. It indicates that Spartina anglica is most affected by environment. The correlation between PSDI of Spartina anglica and soil moisture is maximum, the correlation between PSDI of Phragmites australis and soil moisture is minimum, while that of Scirpus mariqueter is somewhere in between.This points that Spartina anglica has stronger adaptability to wetland environment.

Key words: spectral absorption characteristics, vegetation, wetland, soil moisture

CLC Number:

TP79

ZHANG Xue-wei, HAN Zhen, LIU Mei-jun, DING Ru-yi. Study on spectral absorption characteristics of vegetation in Nanhui Wetland of Yangtze River Estuary[J]. Journal of Marine Sciences, 2018, 36(2): 50-54.

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