广东湛江保护区红树林种群的生物量及其分布格局

本文研究了广东湛江红树林自然保护区高桥镇红寨村及德耀村海滩红树植物的种群分布格局与生物量。结果表明：５年生桐花树群落、白骨壤群落、秋茄群落、１０年生木榄群落、３０年生红海榄群落的总生物量分别为５５４７５ｇ／ｍ２、１６３７０１ｇ／ｍ２、６２６４４８ｇ／ｍ２、４１３８４３ｇ／ｍ２、９６１０２０ｇ／ｍ２；其中地下部分生物量占总生物量的比例依次为３２２８％、４５４５％、４１３１％、２９８５％和２８２９％。计算得Ｓｈａｎｎｏｎ－Ｗｉｅｎｅｒ物种多样性指数为２２３２。种群的分布格局中桐花树、白骨壤、红海榄和秋茄种群为集群分布，而木榄种群为随机分布。

Biomasses and distributive patterns of mangrove populations in Zhanjiang Nature Reserves, Guangdong, China

This paper deals with distributive patterns and biomasses of mangrove populations growing within tidal zones of Hongzhai and Deyao village at Ganqiao town in Zhangjiang Nature Reserve, Guangdong, China The results show that the biomasses of 5 year-old Aegiceras corniculatum, Avicennia marina and Kandelia candel , 10 year-old Bruguiera gymnorrhiza and 30 year-old Rhizophora stylosa are 554 75 g/m 2 ,1 637 01 g/m 2 ,6 264 48 g/m 2 ,4 138 43#Og/m 2 and 9 610 20 g/m 2 , respectively In their turns, the ratios of under-ground part to total biomasses are 32 28%, 45 45%, 41 31%, 29 85%and 28 29% The species diversity of Shannon-Wiener index is 2 232 in the mangrove community The populations of Aegiceras corniculatum, Avicennia marina, Rhizophora stylosa and Kandelia candel are clumpy distributed while the population of Bruguiera gymnorrhiza shows the distribution of poisson