桂西南退化喀斯特植被自然恢复研究  

Study on Natural Restoration of Degraded Karst Vegetation in Southwest Guangxi

作　　者：刘京涛[1] 温远光[2] 周峰[3] 

机构地区：[1]山东省黄河三角洲生态环境重点实验室,山东滨州256603 [2]广西大学林学院,南宁530004 [3]南京晓庄学院生命科学系,南京211171

出　　处：《水土保持研究》2009年第3期65-69,共5页Research of Soil and Water Conservation

基　　金：教育部留学回国人员科研启动基金资助(1997-832);江苏省高校自然科学基础研究面上项目(07KJD180126)

摘　　要：采用“空间代替时间“方法结合”相似系统原理“建立退化群落自然恢复演替系列,对桂西南退化喀斯特植被自然恢复过程中群落高度、生物量等结构功能指标的恢复度和恢复速度进行了分析。结果表明：桂西南退化喀斯特植被群落自然恢复在群落演替初期阶段速度很慢,每提高0.1恢复度需要约10.7 a时间;到演替中期出现恢复加速期,每提高0.1恢复度需要2.6～3.5 a;到演替后期恢复速度又下降,每提高0.1恢复度需要3.5～5.3 a。退化群落从草本群落阶段达到群落结构、功能的基本恢复需要30～40 a,但要达到群落结构、功能的完全恢复则需要近100 a。The ‘time-specific method’ and ‘similar system theory’ were employed to construct succession series of the degraded karst communities in Southwest Guangxi. Evaluation indexes such as restoration degree （RD）, restoration speed （RS） and their calculating methods were proposed. Variation of RD and RS of community structure and function indexes including community height and biomass were analyzed. The results showed that there were the lowest RD and slower RS at the initial stage of community succession; moderate RD and fastest RS at the mid-stage; the highest RD and slowest RS at the late stage. It would take about 10.7 years at the initial stage, 2.6-3.5 years at the middle stage, and 3.5-5.3 years at the succession end for every 0.1 RD. The normal community structure and function could be presented after 30 -40 years natural restoration, but it would take about 100 years to the complete restoration of community structure and function.

关 键 词：相似系统理论 演替系列 恢复度 恢复速度 退化喀斯特植被 

分 类 号：X171[环境科学与工程—环境科学] P642.25[天文地球—工程地质学]