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黄柳在浑善达克沙地多数生境均有分布,但何种土壤因子决定其生物量变化尚不清楚。本研究于丘间凹地、半固定沙丘和固定沙丘调查,运用相关分析和多元回归分析探究黄柳地上生物量与土壤因子的关系。丘间凹地的黄柳植株最高(~2.2m),枝条数最多(~17.9),比叶面积最大(~113.9cm2g-1),地上生物量最高(~2533g/株),半固定沙丘次之。在土壤含水量、p H值、有机质、氮、磷和钾含量等因子中,土壤含水量是影响黄柳地上生物量的关键因子。
Huangliu is distributed in most habitats in the Hunshandake Sandy Land, but it is unclear what soil factors determine its biomass. In this study, we investigated the depression, semi-fixed sand dunes and fixed sand dunes, and used correlation analysis and multiple regression analysis to explore the relationship between aboveground biomass and soil factors. The plantlets with concave mound had the highest (~ 2.2m), the highest number of shoots (~ 17.9), the highest specific leaf area (~ 113.9cm2g-1) and the highest aboveground biomass (~ 2533g / plant) . Among soil moisture content, p H value, organic matter, nitrogen, phosphorus and potassium content, the soil water content is the key factor affecting the aboveground biomass of the yellow willow.