期刊论文

中文

湖南农业科学

1006-060X

2015

7

27-29+33

10.16498/j.cnki.hnnykx.2015.07.009

国家科技支撑计划项目（2012BAD14B17）；

本校为第一机构

水稻是永州零陵区的优势作物,采用土壤类型法对零陵区水稻土有机碳密度和储量进行了估算研究。结果表明,零陵区水稻土有机碳储库约为1 683 003.35 t,平均有机碳密度为55.42 t/hm^2,空间分布上总体呈现为东、西部地区土壤有机碳储量较高,中部地区较低。相比第二次土壤普查数据,零陵区水稻土有机碳密度总体呈现上升趋势,不同土壤亚类的表层土壤有机碳密度介于49.70-56.01 t/hm^2之间。不同地形的水稻土表层土壤有机碳密度有明显的差异,最高的达到57.79 t/hm^2,最低的仅47.03 t/hm^2。

Rice is the dominant crop in Lingling district, Yongzhou municipal, Hunan province. Yongzhou municipal, The study estimates the organic carbon storage and carbon density of paddy soils in Lingling district with soil taxonomy method. The results showed that organic carbon storage in paddy soil of Lingling district was approximately 1 683 003.35 t, and average organic carbon density was 55.42t/hm^2. The spatial distribution of carbon density was higher in eastern and western regions than that in the central region. Organic carbon densities in paddy soils of Lingling district showed an overall up...