名古屋风景林凋落物和凋落叶养分含量季节动态的研究  

SEASONAL DYNAMICS OF LITTERFALL AND NUTRIENT CONCENTRATIONS IN LEAF LITTER IN SCENIC FORESTS OF NAGOYA

作　　者：薛立[1] 薛达 罗山[3] 

机构地区：[1]名古屋大学农学部 [2]山西省城乡规划设计研究院,太原030001 [3]华南农业大学林学院,广州510642

出　　处：《植物生态学报》2001年第3期359-365,共7页Chinese Journal of Plant Ecology

基　　金：国家教委留学回国人员启动基金!项目 ( [1999] 3 63 )

摘　　要：对日本名古屋市的三个风景林——日本柳杉 (Cryp tomeria japonica)林 ,日本米槠 (Quercus cuspidata)林和常绿落叶阔叶混交林的凋落物和凋落叶养分含量的动态变化及养分贮量进行了研究。日本柳杉林、日本米槠林和常绿落叶阔叶混交林的年凋落量分别为 730 9kg· hm- 2、5 790 kg· hm- 2和 5 32 5 kg· hm- 2 ,日本柳杉林的主要凋落高峰发生在 9月 ,次要凋落高峰发生在 3月 ,而日本米槠林和常绿落叶阔叶混交林的凋落高峰分别发生在 5月和 11～ 12月。台风引起大量枝叶凋落。日本柳杉林、日本米槠林和常绿落叶阔叶混交林凋落物的 5种养分年贮量分别为 2 2 4.2 2 kg· hm- 2 、119.33kg· hm- 2 和 133.2 1kg· hm- 2 。凋落物养分中 N、K和 Ca的量大于 P和 Mg。凋落叶的养分量占养分年贮量的 6 3.19%～ 79.0 6 %。Seasonal dynamics in litterfall,nutrient concentrations of litter and litter nutrient accumulation were studied in evergreena confiner Cryptomeria japonica forest,evergreen broad leaved Quercus cuspidata forest and evergreen and deciduous broadleaved mixed forest at Nagoya,Japan.Annual litterfall of these forests were 7309,5790 and 5325 kg·hm -2 ,respectively.Litterfall in C.japonica forest occurred throughout the year with a peak in September and a more minor one in March.In Q.cuspidate forest litterfall peaked in May,while in mixed forest,it peaked from November to December.Typhoons were very influential in the timing of litterfal.The nutrient accumulation in litterfall were 224.22, 119.33 and 133.21 kg·hm -2 .a -1 for C.japonica,Q.cuspidata and mixed forests respectively.N,K and Ca contents were greater than those of P and Mg in all scenic forests,and leaves contributed 63.19% 79.06% of the total.The seasonal changes of nutrient concentration in leaf litterfall were greater in deciduous forest than in evergreen forests.

关 键 词：日本柳杉林 日本米槠林 常绿落叶阔叶混交林 凋落物 养分含量 风景林 

分 类 号：Q948[生物学—植物学]