蚌湖表层土壤有机碳的分布特征

发布时间：2018-04-27 20:13

本文选题：土壤有机碳 + 梯度　；参考：《湿地科学》2017年01期

【摘要】：于2016年1月21~23日,以蚌湖为研究区,在高程10~17 m区间,以1 m为落差,设置7个采样带,分别采集7个采样带0~20 cm深度的土壤样品,分析其有机碳含量。结果表明,蚌湖0~20 cm深度土壤有机碳含量具有较为明显的梯度特征,0~10 cm深度土壤有机碳含量最高值出现在高程14~15 m采样点,最低值出现在高程16~17 m采样点,变化范围为6.36~23.32 g/kg;10~20 cm深度土壤有机碳含量最高值出现在高程14~15 m采样点,最低值出现在高程15~16 m采样点,变化范围为4.74~8.88 g/kg;0~10 cm深度土壤有机碳含量比10~20 cm深度土壤有机碳含量的梯度分布更明显。0~10 cm深度土壤有机碳含量与地上生物量显著正相关(p0.05),与其它因子不相关;10~20 cm深度土壤有机碳含量与土壤含水量显著正相关(p0.05),与其它因子不相关。
[Abstract]:From January 21 to 23, 2016, taking the clam lake as the study area, in the range of 10m and 17m of elevation, 7 sampling bands were set up to collect soil samples with 0 ~ 20 cm depth, and their organic carbon contents were analyzed. The results showed that the soil organic carbon content at the depth of 0 ~ 20 cm in the clam lake had obvious gradient characteristics. The highest value of soil organic carbon content at the depth of 0 ~ 10 cm appeared at the sampling site of 1415 m in height, and the lowest value appeared at the sampling point of 1617 m in height. The range of variation was 6.36 ~ 23.32 g / kg ~ (-1) ~ (10) ~ (20) cm depth soil organic carbon content, the highest value appeared at the sampling point of 14 ~ 15 m height, and the lowest value appeared at a sampling point of 1516 m height. The variation range is 4.74 ~ 8.88 g / kg ~ (-1) ~ (10) cm depth soil organic carbon content is more obvious than that of 10 ~ (20) cm depth soil organic carbon content gradient distribution. 0 ~ (10) ~ (10) cm depth soil organic carbon content and aboveground biomass have a significant positive correlation (p 0.05), and have no correlation with other factors (10 ~ (20) cm). There was a significant positive correlation between soil organic carbon content and soil moisture content, but no correlation between soil organic carbon content and other factors.
【作者单位】：江西科技师范大学;江西师范大学地理与环境学院;
【基金】：国家自然科学基金地区项目(31360120;41561105;71473113) 江西省自然科学基金项目(20132BAB203030) 江西省科技支撑计划项目(20151BBG70014) 江西省教育厅科技项目(GJJ150794) 江西省对外科技合作项目(20151BDH80022) 江西科技师范大学青年拔尖人才项目(2015QNBJRC008);江西科技师范大学科研创新团队项目(2016CXTD002)资助
【分类号】：S153.6

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