华南农业大学学报2018，Vol.39Issue(4)：87-92,6.DOI:10.7671/j.issn.1001-411X.2018.04.014
3种改造人工林的林下植物多样性和土壤物理性质
Undergrowth plant diversity and soil physical properties in three reformed plantations
摘要
Abstract
[Objective]To investigate the undergrowth diversity and soil physical properties in three plantations at Yunyong forest farm in Foshan,Guangdong Province and provide a theoretical basis for ecological forest cultivation and management.[Method]Tutcheria championii was planted in a pure broad-leaved plantation(P1 plot); Cunninghamia lanceolata,Mytilaria laosensis,Elaeocarpus apiculatus,Michelia macclurei,Liquidambar formosana and Alstonia scholarisv were planted in a mixed conifer-broad leaf plantation(P2 plot); M.laosensis,Castanopsis hystri and Erythrophleum fordii were planted in a mixed broad-leaved plantation(P3 plot).Species diversity,coverage,number of total plants and average height of shrub-herb layer under canopy of above plots were investigated.Diversity and evenness indexes were used to study undergrowth species diversity of these plantations.The 100 cm3cutting ring was used to collect soil samples from the 0-20 cm soil layer at three plots,respectively,and soil physical properties such as water content and bulk density were determined.[Result]The mean values of Shannon-Wiener diversity index and Simpson diversity index of shrub species were lower than herb species while the mean values of evenness indexes of shrub species were larger than herb species in the three plots.The growth status of herb species were superior to shrub species in the three plots.The species number and quantity of the undergrowth of P1 plot were more than those of P2 and P3 plots.The soil bulk density of P1 plot was the highest among the three plots while that of P2 plot was the lowest.The values of total soil porosity,natural moisture content,capillary moisture capacity,capillary porosity,non-capillary porosity and aeration porosity of the three plots were all in the order of P2 plot >P3 plot > P1 plot.[Conclusion]The community structure and soil quality of mixed plantations are better than those of pure plantation.关键词
人工林/土壤物理性质/林下植物多样性/多样性指数/均匀度指数Key words
plantation/undergrowth diversity/soil physical property/diversity index/evenness index分类
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方怡然,蔡金桓,薛立..3种改造人工林的林下植物多样性和土壤物理性质[J].华南农业大学学报,2018,39(4):87-92,6.基金项目
广东省林业厅资助项目"林分改造优良乡土阔叶树种筛选"(粤财农2015-159号) （粤财农2015-159号）
