黑龙江省逊克平原土壤有机碳分布与变化特征  

DISTRIBUTION AND VARIATION CHARACTERISTICS OF SOIL ORGANIC CARBON IN XUNKE PLAIN,HEILONGJIANG PROVINCE

作　　者：张哲寰[1,2,3] 刘凯 赵君[4] 梁帅 宋运红 魏明辉 ZHANG Zhe-huan;LIU Kai;ZHAO Jun;LIANG Shuai;SONG Yun-hong;WEI Ming-hui(Shenyang Center of China Geological Survey,Shenyang 110034,China;Key Laboratory of Black Soil Evolution and Ecological Effect,Ministry of Natural Resources,Shenyang 110034,China;Key Laboratory of Black Soil Evolution and Ecological Effect of Liaoning Province,Shenyang 110034,China;Xi′an Center of China Geological Survey,Xi’an 710054,China)

机构地区：[1]中国地质调查局沈阳地质调查中心,辽宁沈阳110034 [2]自然资源部黑土地演化与生态效应重点实验室,辽宁沈阳110034 [3]辽宁省黑土地演化与生态效应重点实验室,辽宁沈阳110034 [4]中国地质调查局西安地质调查中心,陕西西安710054

出　　处：《地质与资源》2024年第2期202-208,160,共8页Geology and Resources

基　　金：中国地质调查局“东北黑土地1∶25万土地质量地球化学调查”(121201007000161312);“兴凯湖平原及松辽平原西部土地质量地球化学调查”(DD20190520).

摘　　要：根据1∶25万土地质量地球化学调查取得的有机碳数据,采用单位土壤碳量法计算土壤碳储量,结果显示:逊克平原土壤表层(0~0.2 m)有机碳储量为87.43 Mt,中层(0~1.0 m)为332.70 Mt,深层(0~1.8 m)为457.62 Mt.土壤表层有机碳密度为6.52 kg/m2,中层为24.82 kg/m2,深层为34.14 kg/m2.按地貌、土壤、土地利用和生态系统类型分别计算了土壤有机碳储量和碳密度,并与1986年第二次土壤普查成果比较,显示逊克平原土壤有机碳变化呈碳源效应,全区土壤有机碳减少了8.48 Mt,有机碳密度下降了8.94%.Based on the organic carbon data obtained from the 1∶250000 land quality geochemical survey,the soil carbon storage is calculated with unit soil carbon amount method.The results show that the organic carbon storage in Xunke Plain is 87.43 Mt in the surface soil(0-0.2 m),332.70 Mt in the middle soil(0-1.0 m),and 457.62 Mt in the deep soil(0-1.8 m),with the organic carbon density of 6.52,24.82 and 34.14 kg/m2,respectively.The soil organic carbon storage and density are calculated in terms of landform,soil,land use and ecosystem types.Compared with the second national soil survey results in 1986,the soil organic carbon change in Xunke Plain shows a carbon source effect,with the soil organic carbon in the whole region decreased by 8.48 Mt and organic carbon density decreased by 8.94%.

关 键 词：单位土壤碳量 有机碳密度 有机碳储量 逊克平原 黑龙江省 

分 类 号：S153.6[农业科学—土壤学]