摘要
对吉林西部盐碱化土壤的物理性状进行了实地调查，并对不同土地利用类型的土壤碳酸盐碳稳定同位素作了系统的测定。结果表明，研究区内盐碱地土壤碳酸盐的δ^13C值的变化趋势可以反映本区土壤盐碱化的进程。盐碱化土地在0～50cm的深度范围内，土壤碳酸盐的δ^13C值变化规律为：0～30cm深度内，土壤碳酸盐的δ^13C值随深度的增加而逐渐减小；在30～50cm范围内，如果有盐积层或碱积层的存在，则土壤碳酸盐的δ^13C值迅速增加。
Through the field investigation of physical properties of the salini-alkani soil in West Jilin Province and the stable carbon isotopic analysis of carbonates in salini-alkani soil, the results show that the δ^13C value of the soil carbonates can reflect the developing tendency of the soil saliniation. In the shallow soil with the depth of 0-50 cm below the ground surface,the extent from 0 to 50 centimeters, the change of the δ^13C of the soil carbonate is positively related with the depth in the upper soil profile from 0-30 cm, but it will increase rapidly in the lower soil profile as the result of the existence of salined and alkali soil layer.
出处
《吉林大学学报（地球科学版）》
EI
CAS
CSCD
北大核心
2006年第2期245-249,273,共6页
Journal of Jilin University：Earth Science Edition
基金
国家自然科学基金项目(40201052)
关键词
吉林西部
盐碱化土壤
土壤碳酸盐
碳稳定同位素
West Jilin Province
salini-alkani soil
soil carbonate
stable carbon isotope
