长汀县红壤侵蚀区土壤生态化学计量学特征

发布时间：2018-04-30 16:13

本文选题：生态化学计量学 + 红壤侵蚀区　；参考：《四川师范大学学报(自然科学版)》2017年05期

【摘要】：土壤碳氮磷生态化学计量比可以很好地体现土壤肥力特征和微生物生命活动特征.福建省长汀县朱溪小流域是我国南方红壤侵蚀区的典型代表,通过对朱溪小流域土壤碳、氮和磷养分的数据分析,发现朱溪小流域侵蚀区的土壤有机质质量分数变化范围为0.29~67.38g/kg,平均值(±标准偏差)为(22.40±17.28)g/kg,低于全国平均水平.不同样地之间有机质质量分数差异较大;氮的变化范围为0.04~1.30g/kg,平均值(±标准偏差)为(0.42±0.34)g/kg;磷的变化范围为0.04~0.80g/kg,平均值(±标准偏差)为(0.24±0.23)g/kg.计算土壤生态化学计量比,发现侵蚀区土壤C/N、C/P和N/P的变化范围分别为3.31~91.80、1.65~248.23和0.31~6.06;平均值(±标准偏差)分别为(34.94±13.17)、(69.60±52.06)和(2.02±1.30).
[Abstract]:The ecological stoichiometric ratio of soil carbon, nitrogen and phosphorus can well reflect the characteristics of soil fertility and microbial life activity. Zhuxi small watershed in Changting County, Fujian Province is a typical representative of red soil erosion area in southern China. The soil carbon, nitrogen and phosphorus nutrients in Zhuxi small watershed are analyzed. It was found that the variation range of soil organic matter mass fraction was 0.2967.38 g / kg, and the mean value (卤standard deviation) was 22.40 卤17.28 g / kg, which was lower than the national average level. The variation range of nitrogen is 0.04n1.30g / kg, the mean value (卤standard deviation) is 0.42 卤0.34g / kg, and the range of phosphorus is 0.04 ~ 0.80g / kg, the mean value (卤standard deviation) is 0.24 卤0.23g / kg 路kg ~ (-1), and the variation range of phosphorus is 0.04 ~ 0.80 g / kg and 0.24 卤0.23 g 路kg ~ (-1) 路kg ~ (-1), respectively. By calculating the soil ecological stoichiometric ratio, it was found that the range of soil C / N P and N / P were 3.31 ~ 91.80 ~ 1.65 ~ 248.23 and 0.31 ~ 6.06, respectively, and the mean values (卤standard deviation) were 34.94 卤13.17 ~ 0.17 ~ 69.60 卤52.06 and 2.02 卤1.30m respectively.
【作者单位】：福建师范大学地理科学学院;
【基金】：国家自然科学基金(41371512)
【分类号】：S153

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