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挖捕泥丁对红树植物白骨壤幼苗生长影响的模拟
引用本文:何琴飞,范航清,莫竹承,王欣,申文辉. 挖捕泥丁对红树植物白骨壤幼苗生长影响的模拟[J]. 应用生态学报, 2012, 23(4): 947-952
作者姓名:何琴飞  范航清  莫竹承  王欣  申文辉
作者单位:1. 广西红树林研究中心广西红树林保护重点实验室,广西北海536000;广西壮族自治区林业科学研究院,南宁530002;国家林业局中南速生材繁育实验室,南宁530002;广西优良用材林资源培育重点实验室,南宁530002
2. 广西红树林研究中心广西红树林保护重点实验室,广西北海,536000
3. 广西壮族自治区林业科学研究院,南宁530002;国家林业局中南速生材繁育实验室,南宁530002;广西优良用材林资源培育重点实验室,南宁530002
基金项目:国家自然科学基金项目(4067050);广西北部湾基础研究重大专项(2010GXNSFE013002);广西大学引进人才项目(2008);广西红树林保护省级重点实验室基金项目;广西林科院基金项目(林科201104)资助
摘    要:沿海群众为了增加收入挖掘林下滩涂海洋经济动物可口革囊星虫,这是导致中国红树林退化的一个重要原因.本文研究了挖掘深度、弧度和频率3个因素对1年生白骨壤幼苗的苗高、基径、单叶面积、比叶面积、生物量和死根干质量等生长指标的影响,了解挖掘活动对红树林生长的影响机理,并筛选出红树林健康状况的评估指标.结果表明:挖掘活动使白骨壤幼苗的苗高和基径增长量、单叶面积、比叶面积和生物量显著减少,而死根干质量显著增加;挖掘深度和弧度对幼苗生长具有明显影响,但频率的影响不显著;当挖掘深度<5 cm、弧度<240°、每月2次以下时,对幼苗的伤害较轻,而挖掘深度>5 cm则会对幼苗造成严重影响.

关 键 词:白骨壤  人为挖掘  红树林退化  幼苗生长

Impacts of digging Phascolosoma esculenta on the growth of mangrove Avicennia marina seedlings: a simulation study
He Qin-Fei,Fan Hang-Qing,Mo Zhu-Cheng,Wang Xin,Shen Wen-Hui. Impacts of digging Phascolosoma esculenta on the growth of mangrove Avicennia marina seedlings: a simulation study[J]. The journal of applied ecology, 2012, 23(4): 947-952
Authors:He Qin-Fei  Fan Hang-Qing  Mo Zhu-Cheng  Wang Xin  Shen Wen-Hui
Affiliation:Guangxi Mangrove Research Center, Guangxi Key Laboratory for Mangrove Conservation, Beihai 536000, Guangxi, China.
Abstract:Digging Phascolosoma esculenta to increase income is one of the main causes leading to the degradation of China mangroves. In order to understand the impact mechanisms of digging P. esculenta on the mangrove growth and to select indicators to evaluate the mangrove health, a simulative study was conducted to clarify the impacts of digging depth, radian, and frequency on the growth of 1-year old Avicennia marina seedlings, with the indices seedling height, basal diameter, single leaf area, specific leaf area, total biomass, and dead root dry mass measured. The results showed that digging activities decreased the increment of seedling height and basal diameter, single leaf area, specific leaf area, and total biomass significantly, and increased the dead root dry mass markedly. Digging depth and radian had obvious effects on the growth of A. marina seedlings, but digging frequency had minor effects. When the digging depth was < 5 cm, digging radian was < 240 degrees, and digging frequency was < 2 times per month, the damage to the seedlings was slighter; but when the digging depth was > 5 cm, the damage was quite serious.
Keywords:Avicennia marina  artificial digging  mangrove degradation  seedling growth.
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