不同林龄杉木纯林林下生物量与土壤理化性质的相关性  

Correlation of Understory Biomass and Soil under Cunninghamia lanceolata Pure Forest of Different Age

作　　者：郭琦[1] 王新杰[1] 衣晓丹[1] 

机构地区：[1]省部共建森林培育与保护教育部重点实验室(北京林业大学),北京100083

出　　处：《东北林业大学学报》2014年第3期85-88,98,共5页Journal of Northeast Forestry University

基　　金：国家林业公益性行业科研专项(201004008)

摘　　要：通过对杉木纯林不同林龄的土壤和林下生物量变化规律的相关性分析,结果表明:(1)林下生物量随林龄增加而增加。植被生物量近熟林最高,凋落物随成熟林林龄增加分解速率加快。(2)土壤结构和肥力幼龄林最好,近熟林最低,后期有所恢复。(3)林下植被生物量对土壤结构无影响,凋落物的完全分解层与土壤有机碳、土壤理化性质均有显著相关性,说明杉木纯林地力随林木生长期的延长和凋落物分解的加快会得到一定程度的恢复。The experiment was conducted to study the change rule of understory biomass and soil under Cunninghamia lanceolata pure forest in different age and analyze the correlation of two pans. Undergrowth biomass increases with age. Vegetative bi- omass is the highest in near-mature forest, the litterfall is the highest in mature forest, and the decomposition rate increases with age. Soil structure and fertility of young forest is the best, and near-mature forest is minimum and later will restore. Undergrowth biomass has no effect on soil structure, but complete decomposition layer of the litterfall and the soil organic carbon, soil physical and chemical properties are significantly correlated. With the extension of forest tree growth and the increase of litterfall decomposition, soil fertility of C. lanceolata pure forest will be recovered.

关 键 词：杉木林 生物量 凋落物 土壤理化性质 相关性 

分 类 号：S714.2[农业科学—林学]