文献类型：期刊文献

中文题名：橡胶-砂仁复合系统生物产量、营养元素空间格局的研究

英文题名：RESEARCH ON SPATIAL PATTERN OF BIOMASS AND NUTRIENT ELEMENT IN PLANTATION OF RUBBER INTERCROPPED WITH AMOMUM LONGILIGULARE

作者：周再知[1] 郑海水[1] 杨曾奖[1] 尹光天[1]

第一作者：周再知

机构：[1]中国林科院热带林业研究所

年份：1997

卷号：17

期号：3

起止页码：225-233

中文期刊名：生态学报

外文期刊名：ACTA ECOLOGICA SINICA

收录：CSTPCD;;Scopus;北大核心:【北大核心1996】；CSCD:【CSCD2011_2012】；

基金：加拿大IDRC资助!"华南热带农用林模式综合研究项目"

语种：中文

中文关键词：橡胶树;砂仁;生物量;营养元素;复合生态系

外文关键词：rubber tree, Amomum longiligulare, intercropping, biomass, nutrient element

分类号：S794.102;S567.239

摘要：通过对橡胶与砂仁间作林和同龄纯胶林各层次各器官生物量及10种营养元素含量的测定，对比研究了两种林分乔木层生物量按径级分配、林分年均净生产量、营养元素的积累分布规律。林龄为30a，间作龄为8a的胶砂间作材的总生物量为139．85t／hm2，其中乔木层占72．7％，间作层占22．6％，枯落物层占5．2％，与同龄纯胶林相比，乔木层提高了7．6％，枯落物层提高了38．9％。两种林分乔木层地上部分生物量约占总生物量的80％左右，木质部总生物量是皮总生物量的5倍。胶砂间作林年均净生产量为24．232t／hm2，是纯胶林的1．88倍。乔木层10种营养元素的积累量胶砂间作林为2214．22kg／hm2，纯胶林为1511．71kg／hm2，间作林是纯胶林的1．46倍。枯落物层5种主要营养元素的积累量间作林较纯胶林提高63．2％。
In a rubber plantation intercropped with A. longiligulare(RA) and a pure rubberplantation (PP) of 30-year-old, biomass and nutrient element of each component of tree, in-tercrops and litters were detected. Biomassallocation in terms of diameter class, net productionand nutrient accumulation of two plantation, have been studied comparatively. The resultsshowed that the total biomass of RA was 139. 85 t/hm2, among which the biomass of trees,intercrops and litters accounted for 72. 7 %, 22. 6 %, and 5. 2 % respectively ; Compared withPP system, the biomass of trees and litters in RA system were increased by 7. 6% and38. 9%. In the two plantations, approximately 80% of biomass were in the aerial part and20% in the roots, moreover the woody biomass is 5 times that of barks. The net production ofRA system is 24. 232 t/hm2 a, 1. 88 times of PP system. The accumulation of ten nutrient ele-ments of RA system at tree layer was 2214. 22 kg/hm2, which was 1. 46 times of PP system.The accumulation of five nutrient elements at litter layer of RA system was increased by63. 2 % than that of PP system For two rubber plantations, the order of accumulation of nu-trient element was the same as tree and litter layer, namely N> Ca> K> Mg> S> P> Fe> Mn> Zn> Cu for tree layer, and N> Mg> Ca> K> P for litter layer.