首页 | 官方网站   微博 | 高级检索  
     

杉木观光木混交林凋落物分解及养分释放的研究(英文)
引用本文:杨玉盛,陈光水,郭剑芬,何宗明,陈银秀.杉木观光木混交林凋落物分解及养分释放的研究(英文)[J].植物生态学报,2002,26(3):275-0.
作者姓名:杨玉盛  陈光水  郭剑芬  何宗明  陈银秀
作者单位:1. 福建农林大学林学院,南平,353001;厦门大学生物学博士后流动站,厦门,361005
2. 福建农林大学林学院,南平,353001
基金项目:ThePost_doctorResearchFoundationofChina,theFoundationforUniversityKeyTeacherbytheMinistryofEducation,andtheResearch ProjectofBasicTheoryofFujianProvince ( 2 0 0 0F0 0 4)
摘    要: 通过福建省中亚热带杉木观光木混交林(Cunninghamia lanceolata and Tsoongiodendron odorum mixed forest)和杉木纯林(Pure C. lanceolata forest)凋落物的分解和养分释放动态试验研究表明,凋落物各组分分解过程中干物质损失速率随时间而减小,分解1年时以观光木叶的干重损失最大。各组分分解过程中N、P元素浓度增加而K和C元素浓度下降。混交林中各组分的养分释放速率大小为观光木叶>混合样品(等重量的观光木叶和杉木叶混合)>杉木叶>杉木

关 键 词:杉木  观光木  混交林  凋落物  分解  养分释放

LITTER DECOMPOSITION AND NUTRIENT RELEASE IN A MIXED FOREST OF CUNNINGHAMIA LANCEOLATA AND TSOONGIODENDRON ODORUM
Abstract.LITTER DECOMPOSITION AND NUTRIENT RELEASE IN A MIXED FOREST OF CUNNINGHAMIA LANCEOLATA AND TSOONGIODENDRON ODORUM[J].Acta Phytoecologica Sinica,2002,26(3):275-0.
Authors:Abstract
Abstract:Rate of litter weight loss and release of nutrient elements were investigated in a mixed forest of Chinese fir (Cunninghamia lanceolata (Lamb.) Hook.) and Tsoong’ tree (Tsoongiodendron odorum Chun) and a pure stand of Chinese fir in Sanming, Fujian. Chinese fir needle, branch, Tsoong’ tree leaf and the mixture of Chinese fir needle and Tsoong’ tree leaf were involved in the 510 day period of litter bag studies. Rate of weight loss slowed with time for all litter components, with the highest percent initial weight loss of 74.54% for leaf litter of Tsoong’ tree at the first year. Concentrations of N and P appeared to increase and concentrations of K and C appeared to decrease during the decomposition. The four litter components could be arranged with respect to nutrient release rate in this sequence: leaf of Tsoong’ tree > the mixed leaves > needle of Chinese fir > branch of Chinese fir. Nutrient elements and weight loss followed the release pattern: K >C >dry weight> N≈P. The total annual nutrient release of litter fall was N,17.921 kg*hm-2*a-1; P, 0.715 kg*hm-2*a-1 and K,10.315 kg*hm-2*a-1 respectively in the mixed forest, being 2.03, 1.73 and 1.34 times as much as that in the pure forest. It was concluded that the higher yield of litter production and the greater amount of nutrient release from litter in mixed forest were beneficial to nutrient cycling. Thus, a higher level of soil fertility would be expected for mixed forest than for pure forest.
Keywords:Cunninghamia lanceolata  Tsoongiodendron odorum  Mixed forest  Litter fall  Decomposition  Nutrient release
本文献已被 CNKI 万方数据 等数据库收录!
点击此处可从《植物生态学报》浏览原始摘要信息
点击此处可从《植物生态学报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司    京ICP备09084417号-23

京公网安备 11010802026262号