生态学杂志2012，Vol.31Issue(3)：569-576,8.
普洱市周边地区4种土地利用类型土壤种子库特征
Soil seed bank characteristics of four land use types in the surrounding areas of Pu'er City, Yunnan Province of Southwest China
摘要
Abstract
Based on the field survey data and the germination experiment of the soil seed banks of four land use types ( secondary monsoon broad-leaved evergreen forest, coniferous and broad-leaved mixed forest, coniferous forest formed after human-assisted natural regeneration, and Camellia sinensis var. Assamica plantation) in the surrounding areas of Pu' er City, this paper studied the soil seed bank density, its species richness and composition, and its relationships with aboveground vegetations of the four land use types. There existed greater differences in the soil seed bank density and its species richness and composition among the four land use types, due to the different disturbance intensity and frequency. The soil seed bank density was the high-est in coniferous forest formed after human-assisted natural regeneration (248.67±116. 86 seeds · m-2) , followed by in coniferous and broad-leaved mixed forest (186.00±43. 27 seeds · m-2) , secondary monsoon broad-leaved evergreen forest (107.33±16.48 seeds · m-2) , and C. Sinensis var. Assamica plantation (51. 67±10. 17 seeds · m-2). The species richness of the soil seed bank in C. Sinensis var. Assamica plantation was significantly lower than that in other land use types. There also existed significant differences in the life forms of the soil seed banks among the four land use types. Herbaceous plants, especially Poaceae and Compositae, dominated the soil seed banks. Coniferous and broad-leaved mixed forest had the highest proportion of herbaceous plants (mostly native plants) in its soil seed bank, while coniferous forest had the highest propor-tion of non-native herbaceous plants ( mainly Eupatorium adenophorum) in its soil seed bank.The similarity coefficient of the species composition between soil seed bank and aboveground veg-etation was relatively low, and was the highest in coniferous forest formed after human-assisted natural regeneration (0.215), followed by in coniferous and broad-leaved mixed forest (0. 176) and secondary monsoon broad-leaved evergreen forest (0. 175).关键词
土壤种子库/植物功能型/次生演替/季风常绿阔叶林/针阔混交林/针叶林/茶园Key words
soil seed bank/ plant functional type/ secondary succession/ monsoon broad-leaved evergreen forest/ coniferous and broad-leaved mixed forest/ coniferous forest/ Camellia sinensis var. Assamica plantation.分类
农业科技引用本文复制引用
李帅锋,刘万德,苏建荣,张志钧,刘庆云..普洱市周边地区4种土地利用类型土壤种子库特征[J].生态学杂志,2012,31(3):569-576,8.基金项目
中国林科院中央级公益性拜研院所基本科研业务费专项资金项目(CAFYBB20080001,riricaf201002M)资助. （CAFYBB20080001,riricaf201002M）
