东北林业大学学报
東北林業大學學報
동북임업대학학보
JOURNAL OF NORTHEAST FORESTRY UNIVERSITY
2014年
3期
85-88,98
,共5页
杉木林%生物量%凋落物%土壤理化性质%相关性
杉木林%生物量%凋落物%土壤理化性質%相關性
삼목림%생물량%조락물%토양이화성질%상관성
Cunninghamia lanceolata pure forest%Biomass%Litterfall%Soil physical and chemical properties%Corre-lation
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。
通過對杉木純林不同林齡的土壤和林下生物量變化規律的相關性分析，結果錶明：（1）林下生物量隨林齡增加而增加。植被生物量近熟林最高，凋落物隨成熟林林齡增加分解速率加快。（2）土壤結構和肥力幼齡林最好，近熟林最低，後期有所恢複。（3）林下植被生物量對土壤結構無影響，凋落物的完全分解層與土壤有機碳、土壤理化性質均有顯著相關性，說明杉木純林地力隨林木生長期的延長和凋落物分解的加快會得到一定程度的恢複。
통과대삼목순림불동림령적토양화림하생물량변화규률적상관성분석，결과표명：（1）림하생물량수림령증가이증가。식피생물량근숙림최고，조락물수성숙림림령증가분해속솔가쾌。（2）토양결구화비력유령림최호，근숙림최저，후기유소회복。（3）림하식피생물량대토양결구무영향，조락물적완전분해층여토양유궤탄、토양이화성질균유현저상관성，설명삼목순임지력수림목생장기적연장화조락물분해적가쾌회득도일정정도적회복。
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 parts.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 .
