Informations et ressources scientifiques
sur le développement des zones arides et semi-arides

Titre : Leaf Functional Trait Variations of Desert Plants Respond to Different Soil Moisture and Salinity in the Ebinur Lake Area

Auteur : 叶丽克·吐斯甫江

Grade : Master 2021

Université : Xinjiang University

Résumé partiel
The response mechanism and adaptation strategies of plants to the environment have been the core of ecological research.Leaves are the largest and most sensitive organ for plants responding to the environmental changes.They are the main place for photosynthesis and material production.It is an important basis for understanding plant environmental adaptation mechanisms and predicting community structure changes.However,there were currently few relevant studies in desert areas.This experiment was conducted in Ebinur Lake National Wetland Nature Reserve in Xinjiang.We established three transects perpendicular to the Aqikesu River channel.The plant composition,leaf functional traits and soil factors in each plot were investgated.At species and community levels,principal component analysis（PCA）,variance decomposition,one-way ANOVA,redundancy analysis（RDA）,correlation analysis and linear mixed-effect models were used to explore the inter-and intraspecific variations in leaf functional trait under high and low water-salt environments.Then we quantified the relative contribution of inter-and intraspecific variations to community trait variation,and comprehensively discuss the driving mechanism of interspecific and intraspecific variation of desert plant leaf traits from the perspective of soil property and species’ own attributes.

Mots clés : plant functional trait ;interspecific trait variation ;intraspecific trait variation ;soil water and salt content ;desert plant ;

Présentation (CNKI)