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- Title
贺兰山不同海拔植被生物量与土壤分形特征 和土壤水分的相关关系.
- Authors
黄业芸; 邱开阳; 朱亚超; 谢应忠; 刘王锁; 杨壹; 王思瑶; 崔璐瑶; 鲍平安
- Abstract
This research investigated the vertical variation of vegetation biomass, soil fractal characteristics and soil moisture content in arid and semi-arid mountain ecosystems, and investigated the correlation between vegetation biomass, fractal characteristics and soil moisture, in typical vegetation zones at different elevations in the Helan Mountains. Vegetation biomass, soil fractal characteristics and soil moisture content and the vertical variability of these parameters were analyzed by one-way ANOVA and Pearson correlation analysis. It was found that:1) The herb biomass and shrub biomass did not show a linear trend with elevation; The maximum value for shrub vegetation biomass occurred at a shallow mountain scrub sampling site designated QSGC and the maximum value for herbaceous vegetation biomass occurred at a subalpine scrub sampling site designated YGSGC, with better vegetation conditions and higher vegetation productivity. 2) The soils in Helan Mountains were comprised mainly of powder-sized and very fine sand particles, and the soil texture became finer as the elevation increased. 3) Soil moisture content increased significantly with elevation, but was slightly lower at a sampling site designated QHYS and characterized by presence of Qinghai spruce. 4) Correlation analysis showed that annual precipitation and soil clay content were the factors most strongly associated with vegetation biomass. Overall, vegetation biomass, soil fractal characteristics, and soil moisture content in the vegetated Helan Mountains were found to be affected by the combined effects and influences of several environmental factors, showing obvious spatial heterogeneity. This study provides important information about the spatial variation patterns of vegetation biomass in Helan Mountains and apparent causative factors. Such information will assist planning of the restoration of degraded vegetation in the Helan Mountains and will provide reference data for planning the rational use of vegetation and soil resources in the Helan Mountain ecosystem.
- Publication
Acta Prataculturae Sinica, 2023, Vol 32, Issue 12, p24
- ISSN
1004-5759
- Publication type
Article
- DOI
10.11686/cyxb2023050