万峰山森林群落演替中土壤肥力和微生物数量特征分析  

Characteristics of Soil Fertility and Microbial Populations under Different Forest Types of Wanfeng Mountain

作　　者：张敏倩 袁剑飞 钟在云 谭斌 华朝晖[4] 冯显帮 邹哲宇 朱陈浩 郭联华[1] ZHANG Min-qian;YUAN Jian-fei;ZHONG Zai-yun;TAN Bin;HUA Zhao-hui;FENG Xian-bang;ZOU Zhe-yu;ZHU Chen-hao;GUO Lian-hua(School of Forestry and Biotechnology,Zhejiang A&F University,Lin’an 311300,China;Suichuan Forestry Bureau of Jiangxi,Suichuan 343900,China;Linshui Wanfengshan Forest Farm of Sichuan,Linshui 638500,China;Suichang Forestry Bureau of Zhejiang,Suichang 323300,China)

机构地区：[1]浙江农林大学林业与生物技术学院,浙江杭州311300 [2]江西省遂川县林业局,江西遂川343900 [3]四川省邻水县万峰山林场,四川邻水638500 [4]浙江省遂昌县林业局,浙江遂昌323300

出　　处：《浙江林业科技》2018年第1期33-37,共5页Journal of Zhejiang Forestry Science and Technology

基　　金：浙江省公益技术研究农业项目"九龙山地区珍稀珍贵用材树种高效培育关键技术研究与应用"(2015C33302)

摘　　要：2015年7月,采用空间代替时间的方法,统计分析了四川邻水县万峰山近60年的人工针叶林-针阔混交林-润楠Machilus pingii林演替序列过程的土壤微生物数量特征和养分含量变化之间的关系。结果表明:群落演替过程中,土壤养分状况、土壤结构和土壤微生物群落结构呈现不同程度的变化。针阔混交林枯落物营养元素和土壤养分含量最高,其中土壤有机碳与碱解氮含量均显著高于其他2种林地,分别达27.000 g·kg-1,248.500 g·kg-1;润楠林的p H值为4.4,显著高于其他2种林地。土壤表层微生物总数大小依次为:针阔混交林>针叶林>润楠林,且与土壤总孔隙度相关性较高;针阔混交林细菌数量显著高于其他2种林地;润楠林放线菌数量比其它2种林地高一个数量级。Determinations were conducted in July 2015 on soil microbial populations,nutrient content in forest litter and soil physical and chemical properties under coniferous plantation,mixed forest of coniferous and broad-leaved forest and Machilus pingii forest in Wanfeng Mountain,Linshui county of Sichuan province.Analysis was made on their relationship.The results showed that nutrient content in the soil and litter was the highest under mixed forest,especially content of soil organic carbon and hydrolyzable nitrogen reached 27.000 g·kg-1 and 248.500 g·kg-1.Soil pH was 4.4 under M.pingii forest,higher than that under the other two forest types.Soil microbial populations were ordered by mixed forest>coniferous forest>M.pingii forest,and had close relation with soil total porosity.Mixed forest had significantly more soil bacteria number than the other two forest lands.M.pingii forest had the most number of actinomycetes.

关 键 词：万峰山 群落演替 润楠林 土壤养分状况 枯落物 微生物数量 

分 类 号：S714.8[农业科学—林学] S718.5