商河县耕层土壤有机碳密度及储量研究

摘要

采用商河县2010年耕地地力评价有机质采样点的数据，运用 GIS 和地统计学相结合的方法，研究了商河县土壤有机质的密度及储量，并按照土类统计分析了不同土壤类型间的有机碳密度及储量差异。研究表明，商河县土壤有机碳密度范围为1．69～5．17 kg/m2，平均3．44 kg/m2；有机碳储量为0．26×1010 kg。按乡镇统计，有机碳密度最大值为玉皇庙镇3．65 kg/m2，最小值为郑陆镇3．15 kg/m2，有机碳储量最大值玉皇庙镇3．47×108 kg，最小值张坊乡0．92×108 kg；按土壤类型统计，有机碳密度最大的为湿潮土3．46 kg/m2，最小为风沙土3．29 kg/m2，有机碳储量最大为潮土10．38×108 kg，最小为褐土化潮土1．34×108 kg。%Using organic sampling datas in fertility evaluation of cultivated land in Shanghe county in 2010, using Geographic Information System (GIS)technology anc geostatistics,SOC density and storage in Shanghe country have been studied.According to the statistics of soil types,differences of SOC density and storage between different soil types have been analyzed.It is showed that the SOC density in Shanghe is 1.69~5.17kg/m2 ,and the average value is 3.44kg/m2 .SOC storage is 2.06×10 10 kg.According to the statistics of the villages and towns,the maximum value of density is 3.65kg/m2 in Yuhuangmiao town, and the minimum value is 3.15kg/m2 in Zhenglu town.The maximum value of the SOC storage is 3.47× 108 kg in Yuhuangmiao town,and the minimum value is 0.92 ×108 kg in Zhangfang town.According to statistics of soil types,the maximum value of the density is 3.46kg/m2 in moist soil,while the minimum value is 3.15kg/m2 in sand soil.The maximum value of SOC storage is 10.38×108 kg in fluvo aquic soil, and the minimum value is 1.34×108 kg in cinnamonazation alluvial soil.