武功山退化草甸养分分布格局及相关性

发布时间：2018-06-04 14:18

本文选题：武功山 + 退化草甸　；参考：《江苏农业科学》2017年03期

【摘要】：以江西省武功山山地草甸为研究对象,分析不同海拔高度(1 600~1 900 m)、不同土壤深度(0~20 cm、20~40 cm)、不同退化程度草甸下土壤养分分布特征以及有机碳、土壤其他养分间的相关关系,结果表明:(1)武功山不同土壤养分相同海拔不同土层间整体差异显著,呈现出表聚性特征,相同土层不同海拔间整体呈垂直分布规律;(2)土壤有机碳与土壤全氮、碱解氮和速效钾之间存在极显著正相关。土壤有机碳与土壤全磷、速效磷和p H值间则无明显的相关性。明确了武功山山地草甸土壤不同海拔间有机碳和各养分间的分布规律,揭示了土壤有机碳与其他土壤养分间的相关关系,研究结果为武功山山地草甸的植被和生态修复提供了理论依据。
[Abstract]:Taking the mountain meadow of Wugong Mountain in Jiangxi Province as the research object, the relationship between soil nutrient distribution characteristics and organic carbon and other nutrients in different degraded meadows was analyzed under different altitude and different soil depths of 1 900 mb, 20 cm ~ 20 cm ~ (-1) and 20 ~ 40 cm 路m ~ (-1), respectively. The results showed that there were significant differences among different soil layers at the same altitude and different soil levels in Wugong Mountain, and there was a vertical distribution of soil organic carbon and soil total nitrogen in the same soil layers at different elevations. There was a significant positive correlation between alkali-hydrolyzed nitrogen and available potassium. There was no significant correlation between soil organic carbon and total phosphorus, available phosphorus and pH. The distribution of soil organic carbon and nutrients at different elevations in mountain meadow of Wugong Mountain was clarified, and the correlation between soil organic carbon and other soil nutrients was revealed. The results provide theoretical basis for vegetation and ecological restoration of mountain meadow in Wugong Mountain.
【作者单位】：江西农业大学林学院;江西农业大学江西省森林培育重点实验室;江西农业大学国土与资源学院;
【基金】：国家科技支撑计划(编号:2012BAC11B06) 国家自然科学基金(编号:30960312、31560150)
【分类号】：S812

【相似文献】