title: [Responses of subalpine Betula albo-sinensis soil invertase activity to elevated atmospheric temperature and CO2 concentration in Western Sichuan].
abstract: Taking the soil planted with subalpine Betula albo-sinensis seedlings in Western Sichuan as test object, this paper studied the responses of its invertase activity to elevated temperature (ET), elevated atmospheric CO2 concentration (EC), and their combination (ETC). The results indicated that ET increased the soil invertase activity to a certain extent, being significant in May, June, September and October. EC also had a significant positive effect on the enzyme activity from May to October (P < 0.05), which was higher in rhizosphere than in non-rhizosphere soil, and in those planted with high density B. albo-sinensis. The responses of soil invertase activity to ETC and shading differed with month, planting density of B. albo-sinensis, and distribution pattern of the enzyme.
authors.affiliation: Department of Environmental Science and Engineering, Sichuan University, Chengdu 610065, China. wuxiuchen2000@163.com
authors.forename: Xiu-chen
authors.initials: XC
authors.lastname: Wu
authors.forename: Hui
authors.initials: H
authors.lastname: Sun
authors.forename: Wan-qin
authors.initials: WQ
authors.lastname: Yang
authors.forename: Kai-yun
authors.initials: KY
authors.lastname: Wang
mesh_terms: D000388:Air / Q000032:analysis*; D029662:Betula / Q000254:growth & development*; D002245:Carbon Dioxide / Q000032:analysis*; D002681:China; D017753:Ecosystem; D018525:Germination; D012621:Seasons; D012639:Seeds / Q000254:growth & development; D012987:Soil / Q000032:analysis*; D013696:Temperature; D043324:beta-Fructofuranosidase / Q000378:metabolism*
chemical_list: D012987:Soil; D002245:Carbon Dioxide; D043324:beta-Fructofuranosidase