title: [Effects of converting cultivated land into forest land on the characteristics of soil organic carbon in limestone mountain area in Ruichang, Jiangxi].
abstract: Taking the forest lands having been converted from cultivated land for 5 years in Ruichang City of Jiangxi Province as test objects, this paper studied the characteristics of soil organic carbon (SOC) under 4 different conversion models (forest-seedling integration, pure medicinal forest, bamboo-broadleaved mixed forest, and multi-species mixed forest). After the conversion from cultivated land into forestlands, the contents of SOC, microbial biomass carbon (MBC), and mineralizable carbon (PMC) in 0-20 cm soil layer increased by 24.4%, 29%, and 18.4%, respectively, compared with those under the conversion from cultivated land into wasteland (P < 0.05), which indicated that the conversion from cultivated land into forest lands significantly increased the SOC content and SOC storage. The SOC, MBC, and PMC contents in 0-10 cm soil layer were significantly higher than those in 10-20 cm soil layer (P < 0.01), and the differences between the soil layers of the four forest lands were higher than those of the wasteland. Among the 4 conversion models, forest-seedling integration had more obvious effects on SOC.
authors.affiliation: College of Forestry, Jiangxi Agricultural University, Nangchang 330045, China. liuyq404@163.com
authors.forename: Yuan-qiu
authors.initials: YQ
authors.lastname: Liu
authors.forename: Fang
authors.initials: F
authors.lastname: Wang
authors.forename: Guo-qing
authors.initials: GQ
authors.lastname: Ke
authors.forename: Ying-ying
authors.initials: YY
authors.lastname: Wang
authors.forename: Shen-mao
authors.initials: SM
authors.lastname: Guo
authors.forename: Cheng-fang
authors.initials: CF
authors.lastname: Fan
mesh_terms: D002119:Calcium Carbonate; D002244:Carbon / Q000032:analysis*; D002681:China; D018556:Crops, Agricultural / Q000254:growth & development; D017753:Ecosystem; D016468:Forestry / Q000379:methods; D009930:Organic Chemicals / Q000032:analysis; D012987:Soil / Q000032:analysis*; D014197:Trees / Q000254:growth & development*
chemical_list: D009930:Organic Chemicals; D012987:Soil; D002244:Carbon; D002119:Calcium Carbonate