Yu Jian-Jun, Yang Feng, Wu Ke-Ning, Li Ling, Lü Qiao-Ling
Henan Agricultural University, Zhengzhou 450002, China.
Ying Yong Sheng Tai Xue Bao. 2008 May;19(5):1058-63.
By using 1: 200 000 soil database, the soil organic carbon storage in Henan Province was estimated, and its spatial distribution was analyzed. The results showed that in this province, soil organic carbon storage was about 10.27 x 10(8) t, accounting for 1.15% of the total in China, and its density was 7.46 kg m(-2) on average, being lower than that (9.60 kg m(-2)) in this country. The top four soil types in organic carbon storage were fluvo-aquic soil, cinnamon soil, skeletal soil, and yellow cinnamon soil, with the storage all being higher than 1.0 x 10(8) t and totally taken up 69.65% of that in Henan. The organic carbon density was the highest in bog soil (24.54 kg m(-2)), followed by in mountain meadow soil (17.69 kg m(-2)) and brown soil (14.64 kg m(-2)). These three soil types mainly distributed in the mountainous areas of west Henan, and the sum of their organic carbon storage was only accounted for 6.34% of the total in the province. The organic carbon density was the lowest in rocky soil (1.32 kg m(-2)) and aeolian sandy soil (1.38 kg m(-2)). In general, the density of soil organic carbon in Henan province mostly varied from 5 kg m(-2) to 10 kg m(-2).
利用1∶20万土壤数据库，对河南省土壤有机碳储量进行了估算，并分析了其空间分布。结果表明，河南省土壤有机碳储量约为10.27×10⁸t，占全国总量的1.15%，平均密度为7.46 kg/m²，低于全国平均水平（9.60 kg/m²）。土壤有机碳储量前四位的土类为潮土、褐土、粗骨土和黄褐土，储量均高于1.0×10⁸t，共占河南省土壤有机碳总量的69.65%。泥炭土有机碳密度最高（24.54 kg/m²），其次为山地草甸土（17.69 kg/m²）和棕壤（14.64 kg/m²）。这3种土类主要分布在豫西山区，其有机碳储量之和仅占全省总量的6.34%。粗骨土和风沙土有机碳密度最低（分别为1.32 kg/m²和1.38 kg/m²）。总体上，河南省土壤有机碳密度大多在5 kg/m²至10 kg/m²之间变化。
