title: [Soil respiration of degraded Korean pine forest ecosystem in Changbai Mountains].
abstract: Taking the broad-leaved Korean pine forest area in Changbai Mountains, a typical eastern forest belt of Northeast China for global change as test object, and by using the approaches of trenching-plot and infrared gas exchange analyzer, this paper analyzed the soil respiration in a selected series of degraded Korean pine forest ecosystem, i.e., broad-leaved Korean pine forest (CK), poplar-birch forest (Y), hardwood forest (S), Mongolian oak forest (M), and bare land (L). In the growth season of the forests, soil respiration showed a clear single peak curve, with the maximum in July or August. The soil respiration decreased in the sequence of Y>M>CK>S>L. The amount of CO2 release in Y and M was about 0.4 and 0.3 times higher than that in CK; and that in S and L accounted for 88% and 78% of CK, respectively.
authors: College of Urban and Environmental Sciences, Northeast Normal University, Changchun 130024, China. liangysts@gmail.com
authors: Yu
authors: Y
authors: Liang
authors: Jia-wei
authors: JW
authors: Xu
authors: Yuan-man
authors: YM
authors: Hu
authors: Yu
authors: Y
authors: Chang
authors: Ren-cang
authors: RC
authors: Bu
mesh_terms: D002244:Carbon / Q000032:analysis; D002245:Carbon Dioxide / Q000032:analysis*; D002681:China; D017753:Ecosystem; D028223:Pinus / Q000254:growth & development* / Q000378:metabolism; D032107:Populus / Q000254:growth & development / Q000378:metabolism; D029963:Quercus / Q000254:growth & development / Q000378:metabolism; D012987:Soil / Q000032:analysis*
chemical_list: D012987:Soil; D002245:Carbon Dioxide; D002244:Carbon