徐华君;

• 1:新疆大学资源与环境科学学院

摘要(Abstract)：

本文以中天山北坡乌鲁木齐河流域作为研究区,讨论了土壤有机碳在流域垂直带中受水热条件影响形成的分布特征.研究采用实地采样、室内分析,并结合周边14个气象台站的气象数据,将回归拟合数值得到的气象数据与实测的土壤有机碳进行了相关分析,得到年平均降水量随海拔高度的变化与土壤有机碳含量的变化为正相关显著,而与平均地表温度指标的变化呈负相关显著.多年冻土层以上的地带土壤有机碳含量与分布的影响有异于非冻土地带.不同地带大陆度的不同也对土壤有机碳的分布产生一定影响,大陆度对于表层有机碳的含量以及KOS值影响较大.用回归拟合数值进行的偏相关分析显示,在控制地表温度的条件下,随降水量的增加,有机碳的含量可能会减少;控制降水量的条件下,随地表温度的升高,有机碳含量可能会增加.如果未来气候朝着暖湿方向发展,对土壤有机碳分布的影响不大.

关键词(KeyWords)： 土壤有机碳;地表温度;大陆度;控制水热条件

Abstract:

Keywords:

基金项目(Foundation): 新疆大学博士科研基金(BS100117)

作者(Authors): 徐华君;

DOI: 10.13568/j.cnki.651094.651316.2020.04.11.0002

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