title: [Carbon storage of poplar-crop ecosystem in Eastern Henan Plain].
abstract: Aimed to understand the carbon storage of poplar-crop ecosystem in Eastern Henan Plain, the poplar-crop ecosystems with different ages (5, 9, 11, and 13 years old) of poplar were selected, and each of them was further divided into four subsystems, i. e. , forest, crop, litterfall, and soil. In the poplar-crop ecosystems with 5, 9, 11, and 13 years old poplar, the carbon storage of the subsystems forest and litterfall was summed as 7.86, 42.07, 44.31, and 60.71 t x hm(-2), respectively. Subsystem crop averagely sequestrated 6. 8 t x hm(-2) of CO2 per year, and the carbon storage of subsystem soil achieved 45.55, 51.06, 55.94, and 60.49 t x hm(-2), respectively. The total carbon storage of these four poplar-crop ecosystems reached 60.81, 100.09, 106.76, and 127.34 t x hm(-2), respectively, much higher than that in mono-cultured farmland (49.36 t x hm(-2)). For the test poplar-crop ecosystems, the carbon storage of subsystems forest and soil occupied a large proportion, accounting for 87.1%-93.1% of the total carbon storage, while that of subsystems crop and litterfall occupied a relatively small proportion, being 6.9%-12.9% of the total, illustrating that agroforestry ecosystem had a high potential in carbon absorption and sequestration.
authors.affiliation: Ministry of Education Key Laboratory of Soil and Water & Desertification Combating, School of Soil and Water Conservation, Beijing Forestry, Beijing 100083, China. qingyunlyjs@163.com
authors.forename: Qing-Yun
authors.initials: QY
authors.lastname: Li
authors.forename: Wei
authors.initials: W
authors.lastname: Fan
authors.forename: Xin-Xiao
authors.initials: XX
authors.lastname: Yu
authors.forename: Meng
authors.initials: M
authors.lastname: Wan
mesh_terms: D002244:Carbon / Q000032:analysis* / Q000378:metabolism; D057965:Carbon Sequestration / Q000502:physiology; D002681:China; D018556:Crops, Agricultural / Q000254:growth & development* / Q000378:metabolism; D017753:Ecosystem; D018515:Plant Leaves / Q000378:metabolism; D032107:Populus / Q000254:growth & development* / Q000378:metabolism; D012987:Soil / Q000032:analysis*
chemical_list: D012987:Soil; D002244:Carbon