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福建省长汀县水土流失区重建森林群落β多样性研究
林强
福建省水土保持试验站, 福建 福州 350003
摘要:
[目的] 对福建省长汀县20世纪80年代以来进行的森林重建效果进行分析,为该区恢复与重建森林植被工作提供科学参考。[方法] 选择7个不同年份重建的林分,分别设置7个20 m×20 m样地进行物种调查,采用β多样性测度指标进行分析。[结果] ①研究区物种多样性指数与均匀度指数随造林时间增长而增加。②Whittaker指数随造林时间的长短而变化。造林时间长的区域相应的Whittaker指数值较低,而造林时间短的对应值高。[结论] 森林恢复时间是影响长汀县水土流失区森林β多样性的重要因素,重建时间越长的森林β多样性越高。
关键词:  β物种多样性  水土流失  重建森林  二元属性数据  长汀县
DOI:10.13961/j.cnki.stbctb.2020.04.020
分类号:S157;X171.4
基金项目:福建省水利科技项目“长汀县红壤侵蚀区人工群落演变特征及改造提升技术研究”(fjslkj2018027)
A Study on β-diversity of Reconstructed Forest Community in Soil Erosion Area of Changting County, Fujian Province
Lin Qiang
Soil and Water Conservation Station of FuJian Province, Fuzhou, Fujian 350003, China
Abstract:
[Objective] The effects of forest reconstruction in Changting County, Fujian Province since 1980s were analyzed in order to provide a reference for the restoration and reconstruction of forest vegetation in this region. [Methods] Seven forest stands reconstructed in different years were selected in the study area, seven 20 m×20 m plots were set up for species survey, and the β-diversity measurement index was used for analysis. [Results] ① The species diversity index and evenness index in the study area increased with the afforestation time. ② Whittaker index changed with the length of afforestation time. As the value of Whittaker index decreased with the increase of afforestation time, vice verse. [Conclusion] Forest restoration time is an important factor affecting forest β-diversity in soil erosion areas in Changting County. The longer the reconstruction time, the higher the forest β-diversity value.
Key words:  β species diversity  soil erosion  forest reconstruction  binary attribute data  Changting County