几种红树林植物在浙南沿海北移引种试验

Preliminary Report on North-ward Introduction Experiment of Several Mangrove Plants Along the Southern Coast of Zhejiang Province

为筛选在温州地区可成功引种的红树林植物,调查了不同种源红树林植物的年生长情况。结果表明:秋茄、无瓣海桑、桐花、海漆可安全越冬,保存率分别为秋茄(77%)>桐花(73%)>海漆(70%)>无瓣海桑(15%),而拉关木、木榄、尖瓣海莲、红海榄、老鼠簕、白骨壤均死亡。在0℃低温下,相对电导率较夏季增幅大小的顺序为:拉关木>无瓣海桑>桐花>1年生秋茄>8年生秋茄;SOD活性增幅最大的是桐花,比夏季增加了105%,秋茄、拉关木SOD活性基本没有变化;脯氨酸含量拉关木增幅最大,冬季比夏季增加了2 854%,而无瓣海桑和8年生秋茄脯氨酸含量则变化很小。综合分析,无瓣海棠、桐花、海漆和秋茄基本上可在浙南地区安全过冬,而其余红树林植物是否适宜在浙南栽植还有待进一步研究。

To screen out the introduced mangrove species adaptive to the natural conditions in Wenzhou area,different provenances of mangrove species were experimented with and the annual growth of the experiment plots was investigated.The results showed that survival rate of Kandelia candel,Sonneratia apetala,Aegiceras corniculatum and Excoecaria agallocha was 77%,73%,70% and 15% respectively,indicating the former 3 species could overwinter safely in the studied area.Whereas all the saplings of Laguncularia racemosa,Bruguiera gymnorhiza,Bruguiera sexangula var.rhynchopetala,Rhizophora stylosa,Acanthus ilicifolius and Avicennia marina died in the winter.Compared to the values measured in the summer,the increment amplitude of relative conductivity（RC） value of the tested species at 0℃ temperature was in the order that of Laguncularia racemosa Sonneratia apetala Aegiceras corniculatum one-year-old Kandelia candel eight-year-old Kandelia candel.The maximum increase of superoxide dismutase（SOD） value happened to Aegiceras corniculatum whose value measured at 0℃ increased by 105% compared to that of measured in the summer.While the SOD values of Kandelia candel and Laguncularia racemosa did not change much with the seasons.The proline（PRO） content in the leaves of Laguncularia racemosa in the winter increased by 2854% compared to the summer value,but there was very little change in this index for Sonneratia apetala and eight-year-old Kandelia candel along the seasonal change.The comprehensive analyses showed that Sonneratia apetala,Aegiceras corniculatum,Excoecaria agallocha and Kandelia candel could safely survive the winter in the south part of Zhejiang Province,while the adaptability of other mangrove tree species to the studied area should be further experimented.