期刊论文

中文

南方农业学报

2095-1191

2015

46

7

1200-1205

10.3969/j:issn.2095-1191.2015.7.1200

国家科技支撑计划项目（2012BAD14B17）；

本校为第一机构

[目的]研究湘西山区农田耕层土壤有机碳储量及分布特征,为有效地促进山区农田资源的科学利用与保护,减缓农业生产造成的有机碳损失和温室气体排放提供依据。[方法]借助土壤类型图、地貌类型图、土地利用现状图和数字高程模型,结合野外土壤样品采集、室内分析和GIS空间分析方法,估算湘西典型山区地形条件下的洪江市农田耕层土壤有机碳密度和储量,分析该市农田碳密度分布特征。[结果]洪江市农田耕层土壤平均有机碳密度为40.48 t/ha,有机碳储量约1171831.62 t。不同地貌条件的耕层土壤有机碳密度表现为：中山（44.59 t/ha）〉河口三角洲（44.22 t/ha）〉低山（42.88 t/ha）〉冲积平原（36.20 t/ha）...

[Objective ]The storage and distribution of organic carbon in plow layer of cultivated land in mountainous areas were investigated to protect and utilize effectively and scientifically cultivated land of mountainous areas, in order to provide references for mitigate loss of organic carbon and emission of greenhouse gas which were caused by unreasonable agricultural production. [ Method ] By applying soil type map, geomorphic type map, land-use map and DEM, the organic carbon density and storage in plow layer of cultivated land of Hongjiang city...