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中国农学通报

中国农学通报 ›› 2009, Vol. 25 ›› Issue (14): 173-177.

所属专题： 水稻

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

区域稻田土壤碳储量的空间分布特征

唐晓红,吕家恪,魏朝富,谢德体,潘根兴,曾希柏   

  • 收稿日期:2009-03-12 修回日期:2009-04-25 出版日期:2009-07-20 发布日期:2009-07-20

Distribution of Organic Carbon Storages in Purple Paddy Field Basined on Region Scale

tangxiaohong_00@yahoo.com jianglj_00@.com   

  • Received:2009-03-12 Revised:2009-04-25 Online:2009-07-20 Published:2009-07-20

PDF (PC)

1938

摘要： 基于土壤类型法估算重庆市巴南区稻田土壤有机碳储量及其空间分布特征，结果表明：研究区稻田土壤有机碳总储量约为6.48×106 t，平均土壤有机碳密度为8.31 kg m-2，略高于全国平均水平。重庆市巴南区稻田0-20 cm土壤有机碳密度介于1.73~3.70 kg m-2 之间，剖面土壤有机碳密度介于5.13~14.07 kg m-2之间。0-20 cm和100 cm土壤有机碳储量分别为1.18×106 t和4.39×106 t，0-20 cm土壤有机碳储量为0-100 cm碳储量的27.50%，说明碳储量主要富集在表层土壤。土壤有机碳密度呈带状分布，且具有高度的不均匀性，同类土壤具有相似的有机碳蓄积量。

关键词: 榛子, 榛子, 过氧化物酶, 亲缘关系

Abstract: Basined on soil type methods and region scale, the distribution of soil organic carbon storages in purple paddy soil of Chongqing were investigated. The results showed that the storage of SOC in Banan district of Chongqing was 6.48×106 t and average SOC density in Banan district with 8.31 kg m-2 was higher than that of China. Carbon density of paddy soil in Banan district ranged from 1.73 kg m-2 to 3.70 kg m-2 at the depth of 0-20 cm, while that in profile ranged from 5.13 kg m-2 to 14.07 kg m-2. Storages of SOC at the depth of 0-20 cm and at the depth of 100 cm were 1.18×106t and 4.39×106 t, respectively. The whole distribution trend of SOC density with strip was high heterogeneous characters and the similar accumulation of SOC storages was observed among the same type of soils.