生态与农村环境学报2009，Vol.25Issue(3)：1-5,5.
喀斯特石漠化生态系统恢复演替过程中土壤质量特性研究——以广西都安县澄江小流域为例
Quality Characteristics of Soils in Karst Rocky-Desertified Areas With Ecosystem Under Restoration Succession-A Case Study of Chengjiang Subwatershed,Du'an County,Guangxi
摘要
Abstract
Quality characteristics of soils in rocky-desertified areas with ecosystem under restoration succession in Karst regions of Guangxi were studied using spatial sequence instead of temporal one.The Chengjiang Subwatershed in Du′an County,Guangxi was selected as a subject of the study.Sampling sites typical of the eight phases of the restoration succession,i.e.rocky-desertified land,cultivated slopeland,shortgrass land,tall-grass land,shrub-grass land,shrubbery land,artificial arbor forestland,and natural arbor forestland,were picked out in the subwatershed for comparative study of chemical and biological properties of the soils with a view to exploring how soil quality was remedied in the process.Results show soils differed sharply in chemical and biological properties between the phases.With vegetation developing into a higher phase,soil quality on the whole displayed a trend of improvement and so did its various quality indexes.When the vegetation restoration succession went on,soil quality index presented a rising trend,i.e.rocky-desertified land (134.78),cultivated slopeland (192.24),shortgrass land (235.18),tall-grass land (260.67),shrub-grass land (317.89),shrubbery land (359.80),artificial arbor forestland (363.39),and natural arbor forestland (460.77).Positive evolution of natural vegetation is an effective path towards better soil quality and an outright reverse process of rocky desertification.关键词
喀斯特石漠化/恢复演替/土壤质量指数Key words
Karst rocky desertification/restoration succession/soil quality index分类
农业科技引用本文复制引用
杨小青,胡宝清..喀斯特石漠化生态系统恢复演替过程中土壤质量特性研究——以广西都安县澄江小流域为例[J].生态与农村环境学报,2009,25(3):1-5,5.基金项目
国家重点基础研究发展计划(2006GB403200) （2006GB403200）
国家自然科学基金(40661005) （40661005）
教育部新世纪优秀人才支持计划(NCET-06-0760) （NCET-06-0760）
广西高校中青年学科带头人专项基金(桂教056408) （桂教056408）
广西研究生教育创新计划 （）
