Caragana korshinskii, Caragana tibetica, Caragana stenophylla and Oxytropis aciphylla were studied in the northern foothills of Yinshan Mountains, and the environmental factors of four leguminous desert vegetation groups were investigated. The quadrata survey method was used to reveal the biomass changes of different desert shrubs and their relationships with community characteristics and soil factors. The re-sults showed that in different shrub communities, the aboveground biomass of constructive species is influenced by inter plant competition with-in the community, as well as the thickness of soil calcium and wet soil layers,the main manifestation was that the better the growth of the ac-companying species, the lower the biomass of the constructive species, and as the thickness of the wet soil layer increased and the thickness of the calcium layer decreased, the aboveground biomass of the constructive species increased.At the same time, the power function model was used to determine the optimal prediction model for aboveground biomass of the constructed species in the Caragana koraiensis and Oxytropis aciphylla group, while the polynomial function model was used to determine the optimal prediction model for aboveground biomass of the Cara-gana tibetica, Caragana stenophylla group.
关键词
阴山北麓/豆科/荒漠灌木群系/地上生物量/环境因子/预测模型
Key words
North foot of Yinshan Mountain/Legumes/Desert shrub group/Aboveground biomass/Environmental factors/Prediction model
维普
万方数据