Dynamic Variation of Seedling Bank under Different Erosion Environments in the Hill-gully Loess Plateau Region
Seedling is an indispensable stage in plant life cycle and important in natural vegetation restoration.To explore dynamic variation of seedling characteristics under different erosion environments(sunny gully slope,sunny Mao slope,Mao top,shady Mao slope,shady gully slope) in the hill-gully Loess Plateau region,five different erosion environments and 15 plots were investigated monthly,and One-Way ANOVA was used to analyze seedling species number,seedling density,species diversity.The results showed that:(1) the number of seedling species decreased from shady gully slope to shady Mao slope,Mao top,sunny Mao slope,sunny gully slope in different erosion environments and seedling species composition existed differences; in different months,seedling species number increased volatility first and then decreased,the maximum appeared in early September; (2) the difference of seedling density in different erosion environments was significant,shady Mao slope was maximum,sunny gully slope was minimum; in different months,seedling density had obvious dynamic variation characteristics of increasing first and then decreasing.Maximum appeared in early July,minimum appeared in early April or middle November; (3) in different erosion environments,seedling species was rich in shady Mao slope,relatively single in sunny gully slope; in different months,diversity index and richness index increased gradually to the peak from April to September,and then reduced slightly in early October and middle November.
the hilly-gully Loess Plateauseedling bankseedling densityspecies diversitydynamic variation
国家科技期刊平台
NSTL
万方数据
维普
