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[1]王从容 李守中,** 杨贤宇.亚热带红壤侵蚀退化区不同恢复水平生境内先锋树种竞争特征*[J].应用与环境生物学报,2019,25(02):1-12.[doi:10.19675/j.cnki.1006-687x.2018.05044]
 Wang Congrong,Li Shouzhong,** & Yang xianyu,et al.Competitive patterns of pioneer species at different restoration levels in the subtropical red soil erosion and degradation region[J].Chinese Journal of Applied & Environmental Biology,2019,25(02):1-12.[doi:10.19675/j.cnki.1006-687x.2018.05044]
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亚热带红壤侵蚀退化区不同恢复水平生境内先锋树种竞争特征*()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
25卷
期数:
2019年02期
页码:
1-12
栏目:
研究论文
出版日期:
2019-04-25

文章信息/Info

Title:
Competitive patterns of pioneer species at different restoration levels in the subtropical red soil erosion and degradation region
文章编号:
201805044
作者:
王从容1 李守中1 2** 杨贤宇1 2
1地理学国家级实验教学示范中心(福建师范大学) 福州 3500072福建师范大学地理科学学院 福州 350007
Author(s):
Wang Congrong1 Li Shouzhong1 2** & Yang xianyu 1 2
1 National Demonstration Center for Experimental Geography Education, Fujian Normal University, Fuzhou350007, China?
2 State Key Laboratory of Subtropical Mountain Ecology (Founded by Ministry of Science and Technology and Fujian Province), Fujian Normal University, Fuzhou350007 , China
关键词:
竞争指数生态恢复马尾松侵蚀退化区Voronoi图
Keywords:
Competition index ecological restoration Pinus massoniana erosion degradation region Voronoi diagram
DOI:
10.19675/j.cnki.1006-687x.2018.05044
摘要:
以亚热带红壤侵蚀退化区先锋树种马尾松(Pinus massionana Lamb.)和木荷(Schima superba Gardn. et Champ)为研究对象,设置4个不同恢复水平样地,构建Voronoi图确定林木生长空间和邻近竞争木,采用V_Hegyi竞争指数定量分析亚热带红壤丘陵生态恢复早期不同生境恢复阶段先锋树种竞争特征。结果显示对象木个体竞争强度与其胸径服从幂函数关系(CI=ADB);随着个体胸径的增大,个体受到的竞争压力逐渐减弱。林木竞争结构和竞争强度在不同样地间具有显著差异(p<0.005),其全林分个体平均竞争强度依次为中等恢复水平样地(3.839 63)>强度侵蚀水平样地(2.315 83)>阔叶树进入样地(2.019 12)>较高恢复水平样地(1.084 75)。本研究表明亚热带红壤侵蚀退化区生态恢复早期不同恢复水平生境内先锋树种的竞争指数存在明显差异,表现为随着生境的恢复,林木所受的竞争压力先增大后减小,并随着阔叶树的进入再次增大。针对不同生境恢复水平应采取相应措施,以减小竞争对生境恢复带来的不利影响。(图3表4参40)
Abstract:
The pioneer species, Pinus massionana and Schima superba, were studied based on four sample plots which at different restoration levels in subtropical red soil hill region. We analyzed the competition pattern of pioneer species at different restoration levels in the early restoration period in subtropical red soil hill region.Voronoi diagram was constructed and used to determine the growth space of stems and adjacent competitive trees.The relation between individual’s competitive intensity and DBH (diameter at breast height) shows a s power function ( CI=ADB); the competitive intensity decreased with increased DBH(p<0.005). The average individual competition intensity of the whole forest of our plot was in sequence of medium recovery level(3.839 63), strength erosion level(2.315 83), broad-leaf existed(2.019 12) and high recovery level (1.084 75). By analyzed the characteristics of forest competition index in subtropical red soil hill region, which could provide a reference for the adjustment of forest structure and advice of ecological restoration in soil erosion region.There is a significant difference in the competition index of pioneer species in the early stages of ecological restoration in the subtropical red soil erosion and degradation region. The competition stress was increased at first then decreased, and increased again after the entry of broad-leaved trees. Measures should be taken to reduce the adverse effects of competition on habitat restoration of different habitats.

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备注/Memo

备注/Memo:
收稿日期: 2018-05-26 接受日期 Accepted: 2018-07-10
*国家自然科学基金面上项目(31470633)、国家重点研发计划(2017YFC05054)资助?
**通讯作者(E-mail: lisz126@126.com)
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更新日期/Last Update: 2018-11-12