Temporal and spatial variations in the stable carbon isotope composition and carbon and nitrogen contents in current-season twigs of Tamarix chinensis Lour. and their relationships to environmental factors in the Laizhou Bay wetland in China
作者： Likun Sun , Wanqiu Liu , Guangxiu Liu , Tuo Chen , Wei Zhang
DOI: 10.1016/J.ECOLENG.2016.01.041
关键词:
摘要: Coastal wetlands are highly vulnerable ecosystems exposed to tidal and storm events soil alkalinization. Tamarix chinensis, adapted flooded salty conditions, is an important pioneer foundation species of riparian habitats, ensuring the ecological stability wetlands. To better understand physiological responses environmental conditions across T. chinensis community in Laizhou Bay wetland China, we analysed δ13C, C N 108 samples current-season twigs at three different density levels (dense, sparse fringe) light intensities (shade, sun top) from September 2011 August 2012. The results showed that δ13C changed with seasonal variations C:N ratio were mainly affected by sunlight. Whereas, did not affect any C, GLM (generalized linear model) analysis. Then was correlated no relationships existed N. In addition, contents influenced factors. primarily salinity, air temperature relative humidity. Air temperature, precipitation humidity key contributors content. weakly wind speed. Above all, our provide valuable information on eco-physiological under stress
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