河南农业科学2012，Vol.41Issue(12)：72-75,4.
豫东平原不同年限农林间作系统土壤有机碳库特征
Characteristics of Soil Organic Carbon Stock of Poplar Crop Intercropping System of Different Years in Eastern Henan Plain
摘要
Abstract
Characteristics of soil organic carbon stock of 3 a,9 a, 13 a,and 17 a poplar crop intercropping system (PCIS) were investigated to comprehensively understand carbon sequestration efficiency of PCIS in eastern Henan plain. The results showed that the soil organic carbon content decreased gradually with the increasing of soil depth,and it increased with the increase of intercropping years. Also the soil organic carbon density increased in 0 ~60 cm soil layer with the increase of intercropping years, which reached 11. 25 t/hm2,11. 19 t/ha,13. 71 t/ha and 16. 17 t/ha in 3 a,9 a,13 a,17 a,respectively. The carbon density decreased with the increase of soil depth,and the proportion of the carbon density in 40~60 cm soil layer increased with the increase of intercropping years, and it reached 28. 76% in 17 a,illustrating the ability of carbon sequestration increased with the increase of intercropping years in deep soil. The soil organic carbon sequestration rate increased with the increase of intercropping years, which was 0. 145 0 t/(ha · a) in 3 - 9 a,0. 397 5 t/(ha · a) in 9 - 13 a,0. 615 0 t/(ha · a) in 13 - 17 a,and the average was 0. 351 4 t/(ha · a) , suggesting PCIS could not give full play to its soil carbon sequestration efficiency until it reached a certain number of intercropping years in eastern Henan plain.关键词
杨农间作系统/土壤有机碳/土壤碳密度/碳固存速率/豫东平原Key words
poplar crop intercropping system/soil organic carbon/soil carbon density/carbon sequestration rate/eastern Henan plain分类
农业科技引用本文复制引用
高喜荣,万猛,王齐瑞,杨海青,赵辉,凌晓明,樊巍..豫东平原不同年限农林间作系统土壤有机碳库特征[J].河南农业科学,2012,41(12):72-75,4.基金项目
国家"十二五"科技支撑计划项目(2011BAD38B0205) （2011BAD38B0205）
国家林业局黄淮海平原农田防护林生态系统定位研究观测站资助项目 （）
