Dynamic of sandy alpine grasslands affect the progress and reversal desertification in source regions Yangtse Rivers. To understand geomorphic driving mechanism species distribution pattern, we examined compositions delineated most important landform factors influencing grassland using two-way indicator analysis (TWINSPAN), detrended correspondence (DCA), canonical (CCA). Field survey were cond...

2 Forest Advisor, University of California, Cooperative Extension, Eureka, California Abstract: Data on riparian community composition and environmental conditions were collected on over 20 streams in the Sierra Nevada as part of hydropower licensing studies. Over 1,000 samples were analyzed using two-way indicator species analysis (TWINSPAN), to determine riparian dominance types. Ordination t...

In temperate forests, herbs comprise up to 90% of species richness yet received less attention, and their community structure, diversity patterns, driving mechanisms still remain understudied. We provide a phytosociological overview herb stratum develop vegetation model characterize designate groups interpret distribution patterns. Multivariate analyses – classification (TWINSPAN) ordination (i...

biodiversity plays a crucial role in stability and productivity of natural ecosystem. the main goal of this research was to classify ecological groups in steppe rangeland and investigate their relationships with plant diversity indices. therefore, fifty different land unit tracts (lut) were identified in khod-neuk basin, yazd province, iran, in 2010. vegetation and soil samples were taken in th...

growth and productivity of plants are mainly affected by various environmentalfactors in different ecosystems and natural habitat in the world. this research aims to studythe existing relationships between the phytosociology characteristics of thymuskotschyanus and environmental factors in order to find the most important factorsgoverning development of the species in middle taleghan rangelands...