茅埏岛大型底栖动物次级生产力时空变化  

Secondary productivity of macrobenthos at different habitats of Maoyan Island

作　　者：任鹏[1] 李海宏[1] 鲍毅新[1] 龚堃[1] 

机构地区：[1]浙江师范大学生态研究所,浙江金华321004

出　　处：《生态学杂志》2016年第1期174-182,共9页Chinese Journal of Ecology

基　　金：浙江省自然科学基金项目(ZEO204)资助

摘　　要：2012年11月—2014年7月,分季度对茅埏岛潮间带不同生境大型底栖动物进行调查,对其物种组成、生物量、次级生产力和P/B值进行了比较分析。结果表明:大型底栖动物的生物量在生境间为红树林(16.58±6.21 g·m^(-2))>互花米草(14.16±13.87 g·m^(-2))>光滩(9.97±6.43 g·m^(-2)),各生境的生物量冬季时均最低;生物量在3种生境间差异不显著(P>0.05),在季节间差异显著(P<0.05);在站点中以南滩村红树幼林最高(52.22±28.00g·m^(-2)),电站互米花草最低(5.44±2.68 g·m^(-2));生物量在10个站点间差异极显著(P<0.01),在季节间差异显著(P<0.05);次级生产力在生境间为红树林(10.60 g AFDW·m^(-2)·a^(-1))>光滩(9.00 g AFDW·m^(-2)·a^(-1))>互花米草(8.99 g AFDW·m^(-2)·a^(-1)),3种生境次级生产力均在冬季时最低;P/B值为光滩(0.90)>红树林(0.64)=互花米草(0.64);P/B值在春冬两季均高于夏秋两季;茅埏岛潮间带引种秋茄红树,形成的红树林生境具有较高的次级生产力,以人工红树林取代互花米草是治理其入侵的有效措施。From November 2012 to July 2014, a survey on macrobenthos at three habitats （man- grove, Spartina alterniflora and natural tidal flat） in the tidal flat of Maoyan Island was quarterly conducted to compare their species composition, biomass, secondary productivity, and P/B va- lues. The results showed that the biomass of macrobenthos was in order of mangrove （ 16.58±6.21 g · m-2） 〉 S. alterniflora （14.16±13.87 g · m-2） 〉 natural tidal flat （9.97±6.43 g · m-2）. The biomass of each habitat was lowest in winter. Two-way ANOVA analysis showed that the three habitats had no significant differences in biomass （P = 0. 276） , but different seasons did have （P= 0.042）. In addition, biomass varied greatly among ten sites （P= 0.000） and different sea- sons （P=0.032）. The secondary productivity of macrobenthos was in order of mangrove （10.60 g AFDW · m-2 · a-1） 〉 natural tidal flat （9.00 g AFDW · m-2 · a-l） 〉 S. alterniflora （8.99 g AFDW · m-2 · a-1 ）, and the secondary productivity of macrobenthos at each habitat was lowest in winter. The P/B value of the natural tidal fiat was highest （0.90）, followed by mangrove and S. alterniflora （0.64 for both）. The P/B values in spring and winter were higher than in summer and autumn. Collectively, the mangrove habitats in Maoyan Island had higher secondary produc- tivity, and planting mangrove to take the place of S. alterniflora would be an efficient way to con- trol its invasion.

关 键 词：次级生产力 大型底栖动物 红树林 互花米草 

分 类 号：Q178.1[生物学—水生生物学]