期刊论文

Spatial Heterogeneity and Impact Factors of Soil Organic Carbon in a Choerospondias axillaris Deciduous Broad-leaved Forest

中文

广西林业科学

1006-1126

2016

45

2

143-148

10.3969/j.issn.1006-1126.2016.02.005

国家自然科学基金项目（41503081）；

本校为第一机构

采用地统计学方法分析了南酸枣(Choerospondias axillaris)落叶阔叶林不同土层(0～ 10 cm、10～ 20cm、20～ 30 cm)土壤有机碳含量的空间异质性特征及其影响因素.结果表明:不同层次土壤有机碳含量范围为4.67～ 46.34 g/kg,变异程度为27.09％～43.75％,属于中等程度变异,且变异程度随土层深度加深而变大.半方差函数分析显示土壤有机碳含量表现出强烈的空间自相关关系,表明土壤有机碳空间异质性主要由结构性因素引起;土壤有机碳含量变程(A0)范围为12.3～28.8 m.空间插值(Ordinary Kriging)结果显示土壤有机碳含量的高值分布在低海拔或洼地,呈现出明显的条带状和斑块状分布.海拔、凋落物、凹凸度、...

Geostatistics and Geographical Information System（ GIS） were applied to investigate the spatial heterogeneity and impact factors of soil organic carbon content at different soil depths（ 0 – 10 cm,10 – 0 cm and 20 – 30 cm） in a deciduous broad-leaved forest（ Choerospondias axillaris） in Changsha City,Hunan Province. The results showed that soil organic carbon content ranged from 4. 67 g/kg to46. 34 g/kg at different soil depths with variation coefficients varying from 27. 09% to 43. 75%,revealing a moderate degree of variation. The spat...