广州南沙人工红树林凋落物组成与季节变化的研究  

Composition and Seasonal Changes of Litter in an Artificial Mangrove in Nansha,Guangzhou

作　　者：朱可峰[1,2] 廖宝文[1] 章家恩[2] 

机构地区：[1]中国林业科学研究院热带林业研究所,广东广州510520 [2]华南农业大学农学院,广东广州510642

出　　处：《华南农业大学学报》2011年第4期119-121,共3页Journal of South China Agricultural University

基　　金：国家科技支撑计划专题项目(2009BADB2B0401);广东省科技计划项目(2005A30402003;2006A36702003);广州市林业与园林局项目"广州市南沙湿地环境效应监测";海南东寨港红树林生态站项目

摘　　要：全年收集广州南沙湿地游览区人工红树林中的6龄无瓣海桑Sonneratia apetala、4龄无瓣海桑和6龄海桑S.caseolaris 3种林分的凋落物,并对凋落物量作全年变化分析,结果表明:3种林分凋落物总生物量呈现单峰的季节变化,峰值出现在8—9月,在12月至次年2月达到较低值.3种林分凋落物总生物量大小依次为6龄无瓣海桑(1 519.30 g.m-2.年-1)>6龄海桑(1 446.94 g.m-2.年-1)>4龄无瓣海桑(1 323.45 g.m-2.年-1).其中,叶、枝、花和果的凋落物生物量组成比例不一,但均以叶为主要组分,其比例超过60%;均以花所占总凋落物生物量的比例最小.Litters from 3 stands of mangrove, i. e. , 6-year-old Sonneratia and 6-year-old S. caseolaris, were collected in the area of Nansha Wetland of Guangzhou. ld S. apetala , An analysis of annual variation in litter production showed that the total litter of the stands exhibited a seasonal change with a single peak. The highest peak appeared during August and September, and shifted to a lower level between December and February. The total litter production of the three mangrove stands was in the order of 6-year-old S. apetala （ 1 519. 30 g- m^ -2. year- 1 ） 〉 6-year-old S. caseolaris （ 1 446. 94 g. m ^-2. year- 1 ） 〉 4-year-old S. apetala （ 1 323.45 g- m^-2. year-1 ）. Although the amounts of leaf, branch, flower and fruit in composition were different, the leaf was the main component and its proportion exceeded 60% among them. The flower proportion of the total litter production was the lowest.

关 键 词：红树林 凋落物 无瓣海桑 海桑 广州南沙 

分 类 号：S792.99[农业科学—林木遗传育种]