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雷州半岛东海岸玉蕊群落的干扰机制及潜在生态损失分析

郭程轩 陈祁琪 徐颂军 陈虹羽 李婉盈 潘亭君

郭程轩, 陈祁琪, 徐颂军, 陈虹羽, 李婉盈, 潘亭君. 雷州半岛东海岸玉蕊群落的干扰机制及潜在生态损失分析[J]. 华南师范大学学报(自然科学版), 2019, 51(4): 67-75. doi: 10.6054/j.jscnun.2019068
引用本文: 郭程轩, 陈祁琪, 徐颂军, 陈虹羽, 李婉盈, 潘亭君. 雷州半岛东海岸玉蕊群落的干扰机制及潜在生态损失分析[J]. 华南师范大学学报(自然科学版), 2019, 51(4): 67-75. doi: 10.6054/j.jscnun.2019068
GUO Chengxuan, CHEN Qiqi, XU Songjun, CHEN Hongyu, LI Wanying, PAN Tingjun. The Disturbance Mechanism and Potential Ecological Loss of the Barringtonia racemosa Community on the East Coast of Leizhou Peninsula[J]. Journal of South China normal University (Natural Science Edition), 2019, 51(4): 67-75. doi: 10.6054/j.jscnun.2019068
Citation: GUO Chengxuan, CHEN Qiqi, XU Songjun, CHEN Hongyu, LI Wanying, PAN Tingjun. The Disturbance Mechanism and Potential Ecological Loss of the Barringtonia racemosa Community on the East Coast of Leizhou Peninsula[J]. Journal of South China normal University (Natural Science Edition), 2019, 51(4): 67-75. doi: 10.6054/j.jscnun.2019068

雷州半岛东海岸玉蕊群落的干扰机制及潜在生态损失分析

doi: 10.6054/j.jscnun.2019068
基金项目: 

国家自然科学基金项目 41877411

详细信息
    通讯作者:

    徐颂军, 教授, Email:xusj@scnu.edu.cn

  • 中图分类号: Q149

The Disturbance Mechanism and Potential Ecological Loss of the Barringtonia racemosa Community on the East Coast of Leizhou Peninsula

  • 摘要: 利用样方调查、遥感影像分析以及生态系统服务功能价值测算等方法,对雷州半岛红树林玉蕊(Barringtonia racemosa)群落所遭受的自然与人为干扰因素及其影响机制进行了测度与分析,定量刻画了不同干扰因素对玉蕊群落格局和植物株体的影响,在此基础上依据生态系统服务功能价值评估标准,对干扰影响下的玉蕊群落的潜在生态损失进行测算.研究结果表明雷州半岛红树林玉蕊群落主要受到植物入侵、河流改道及病虫害的共同干扰:植物入侵以薇甘菊(Mikania micrantha)入侵最严重,其次为飞机草(Chromolaena odorata),植物入侵在玉蕊群落的草本层、灌木层和乔木层呈现显著的垂直分布差异;河流改道对凹凸两岸的玉蕊进行机械冲刷,导致玉蕊种群密度降低、连通性下降,群落格局趋于破碎;病虫害干扰主要表现为考氏白盾蚧(Pseudaulacaspis cockerelli)对玉蕊下层生长的抑制,干扰程度存在垂直空间差别. 3种干扰分别对玉蕊群落的水质净化、固碳、生产氧气、气候调节、污染物降解和生物多样性等生态服务功能产生影响,造成玉蕊的潜在生态损失最大可达24.9万元/a.为有效防治各类干扰对玉蕊群落的破坏,结合“防重于治”的理念,提出了物理防治、群落改造以及划定生态保护红线等生态保护途径.
  • 图  1  研究区域示意图

    Figure  1.  The sketch map of the studied area

    图  2  薇甘菊对玉蕊的物理干扰方式

    Figure  2.  The mode of Mikania micrantha's physical disturbance of the Barringtonia racemosa community

    图  3  玉蕊林入侵植物的生物量与郁闭度的关系

    Figure  3.  The relationship between invasive plant biomass and canopy density of the Barringtonia racemosa community

    图  4  研究区2011—2018年河流改道遥感示意图

    Figure  4.  The remote sensing map of river diversion in the stu-died area from 2011 to 2018

    图  5  不同垂直方向上病虫害对玉蕊的干扰分布

    Figure  5.  The distribution of disturbance by diseases and pests in different vertical directions

    表  1  玉蕊群落生态损失的评估方法

    Table  1.   The methods of assessing ecological loss of the Barringtonia racemosa community

    生态系统服务功能指标 评估方法 生态损失计算公式
    水质净化 成本替代法 水质净化损失=单位面积红树植物对污染物的吸附价值×相应湿地面积
    固碳 市场价值法 固碳价值损失=碳固定量×碳税率
    生产氧气 市场价值法 生产氧气损失=产氧成本×放氧量
    污染物降解 生产成本法 污染物降解损失=吸收SO2量×削减单位SO2的工程成本
    气候调节 影子工程法、成果参照法 气候调节损失=湿地水汽蒸发量×单位体积水汽调节气候价值
    生物多样性 成果参照法 生物多样性损失=平均每公顷森林提供的间接经济价值×森林面积
    下载: 导出CSV

    表  2  植物入侵对玉蕊群落的干扰统计

    Table  2.   The statistics of disturbance caused by invasive plants in the Barringtonia racemosa community

    玉蕊垂直分布 入侵植物类型 入侵植物生物量/(g·m-2) 干扰方式
    乔木层 薇甘菊 5.25 沿树冠缠绕、沿枝干缠绕
    灌木层 薇甘菊 5.40 沿枝干缠绕
    草本层 薇甘菊、飞机草 5.52 沿根部缠绕、地面散生
    下载: 导出CSV

    表  3  植物入侵所造成的玉蕊群落潜在生态损失

    Table  3.   The potential ecological loss of the Barringtonia racemosa community caused by disturbance of plant invasion

    生态系统服务功能价值 生态损失/ (元·a-1) 占比/%
    水质净化价值 56 550.00 67.27~69.29
    固碳价值 1 440.67~3 887.42 1.77~4.62
    生产氧气价值 18 186.00 21.63~22.28
    污染物降解价值 79.79 0.10
    气候调节价值 216.08 0.26
    生物多样性价值 5 145.60 6.12~6.30
    下载: 导出CSV

    表  4  河流改道所造成的玉蕊群落潜在生态损失

    Table  4.   The potential ecological-economic loss of the Barringtonia racemosa community caused by disturbance of river diversion

    生态损失类型 生态系统服务功能价值 生态损失/(元·a-1) 占比/%
    间接生态损失 水质净化价值 377.00 62.41~64.14
    固碳价值 9.60~25.92 1.63~4.30
    生产氧气价值 121.16 20.10~20.61
    污染物降解价值 0.53 0.09
    气候调节价值 1.44 0.24
    生物多样性价值 34.30 5.68~5.84
    直接生态损失 原材料供给价值 43.76 7.24~7.44
    下载: 导出CSV
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  • 收稿日期:  2019-03-25
  • 刊出日期:  2019-08-25

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