摘要
本文研究了不同滩涂生境对互花米草(SPartina alterniflora)群落特征及生物量的影响。其结果是:建立在小潮高潮线附近滩面的互花米草群落,其密度、高度、地上和地下生物量(本文生物量均为现存生物量),均比建立在偏低、偏高位置滩面的群落为高。在淡水、肥水来源丰富的河口潮滩上建立的互花米草群落,其群落特征更突出,生物量比建立在土壤肥力低、含盐量高的非河口潮滩上群落高。潮滩上的互花米草群落地下生物量随龄级的增加而增长,但地上生物量和总生物量以三年龄群落为最高,四年龄群落却比三年龄群落低。
The effects of various elevations, locations and ages of plantings onthe characteristics and biomass of Spartina alterniflora were studied inLuoyan bay, Luoyan County, Fujian Province, 26°308′N. The results sho-wed highest density, height, below ground and above ground biomass ofS. alterniflora communities planted near the high water of neap tide. Bet-ter growth and more biomass have been observed in the region of rivermouth with abundant fresh water supply and mud deposit of high fertilitythan in the region far away from the mouth with mud of high salinityand low fertility. The under ground biomass of S. alterniflora communit-ies increases with their age. However, the biomass above ground and thebiomasses of both above and below ground were highest in 3 year old co-mmunities, higher than those of 4 year old ones.
关键词
互花米草
生物量
群落特性
Spartina alterniflora
biomass
Community characteristics
