title: [Relationships between soil and rocky desertification in typical karst mountain area based on redundancy analysis].
abstract: Redundancy analysis (RDA) was employed to reveal the relationships between soil and rocky desertification through vegetation investigation and analysis of soil samples collected in typical karst mountain area of southwest Guizhou Province. The results showed that except TP, TK and ACa, all other variables including SOC, TN, MBC, ROC, DOC, available nutrients and basal respiration showed significant downward trends during the rocky desertification process. RDA results showed significant correlations between different types of desertification and soil variables, described as non-degraded > potential desertification > light desertification > moderate desertification > severe desertification. Moreover, RDA showed that using SOC, TN, AN, and BD as soil indicators, 74.4% of the variance information on soil and rocky desertification could be explained. Furthermore, the results of correlation analysis showed that soil variables were significantly affected by surface vegetation. Considering the ecological function of the aboveground vegetation and the soil quality, Zanthoxylum would be a good choice for restoration of local vegetation in karst mountain area.
authors.affiliation: Guizhou Provincial Key Laboratory of Mountain Environment, Guizhou Normal University, Guiyang 550001, China. longjian22@163.com
authors.forename: Jian
authors.initials: J
authors.lastname: Long
authors.forename: Hong-Kai
authors.initials: HK
authors.lastname: Liao
authors.forename: Juan
authors.initials: J
authors.lastname: Li
authors.forename: Cai-Yun
authors.initials: CY
authors.lastname: Chen
mesh_terms: D002681:China; D003247:Conservation of Natural Resources / Q000706:statistics & numerical data*; D017753:Ecosystem; D004784:Environmental Monitoring / Q000379:methods*; D012987:Soil / Q000032:analysis*
chemical_list: D012987:Soil