title: [Theoretical model for rocky desertification control in karst area].
abstract: Based on the basic principles of restoration ecology, the trigger-action model for rocky desertification control was proposed, i. e. , the ability that an ecosystem enables itself to develop was called dominant force, and the interfering factor resulting in the deviation of the climax of ecological succession from its preconcerted status was called trigger factor. The ultimate status of ecological succession was determined by the interaction of dominant force and trigger factor. Rocky desertification was the result of serious malignant triggers, and its control was the process of benign triggers in using the ecological restoration method of artificial designs to activate the natural designing ability of an ecosystem. The ecosystem of Karst rocky desertification in Fenghuang County with restoration measures was taken as a case to test the model, and the results showed that the restoration measures based on trigger-action model markedly improved the physical and chemical properties of soil and increased the diversity of plant. There was a benign trigger between the restoration measures and the Karst area. The rationality of the trigger-action model was primarily tested by the results in practice.
authors.affiliation: Institute of Ecology, College of Biology and Environmental Sciences, Jishou University, Jishou 416000, Hunan, China. liangliang198119@163.com
authors.forename: Liang
authors.initials: L
authors.lastname: Liang
authors.forename: Zhi-Xiao
authors.initials: ZX
authors.lastname: Liu
authors.forename: Dai-Gui
authors.initials: DG
authors.lastname: Zhang
authors.forename: Kai-Dong
authors.initials: KD
authors.lastname: Deng
authors.forename: You-Xiang
authors.initials: YX
authors.lastname: Zhang
mesh_terms: D002681:China; D003247:Conservation of Natural Resources; D017753:Ecosystem; D004777:Environment; D008962:Models, Theoretical; D012987:Soil / Q000032:analysis*; D014197:Trees / Q000254:growth & development*
chemical_list: D012987:Soil