[1]陆雪婷,曹碧凤,杨樟平,等. 毛竹向杉木林扩张不同程度林分空间结构遥感量化分析[J].西北林学院学报,2023,38(5):184-193.[doi:10.3969/j.issn.1001-7461.2023.05.25]
　LU Xue-ting,CAO Bi-feng,YANG Zhang-ping,et al. Quantitative Analysis of Spatial Structure of Phyllostachys edulis Stand at Different Degrees of Expansion to Cunninghamia lanceolata Forest by Remote Sensing[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2023,38(5):184-193.[doi:10.3969/j.issn.1001-7461.2023.05.25]
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 毛竹向杉木林扩张不同程度林分空间结构遥感量化分析()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第38卷
期数:
2023年第5期
页码:
184-193
栏目:
出版日期:
2023-09-30

文章信息/Info

Title:
 Quantitative Analysis of Spatial Structure of Phyllostachys edulis Stand at Different Degrees of Expansion to Cunninghamia lanceolata Forest by Remote Sensing
文章编号:
1001-7461(2023)05-0184-10
作者:
 陆雪婷1; 2; 曹碧凤3; 杨樟平1; 2; 严夏帆1; 2; 宋贤芬1; 2; 余坤勇1; 2*; 刘健1; 2
 （1.福建农林大学 林学院，福建 福州 350002；2.3S技术与资源优化利用福建省高等学校重点实验室，福建 福州 350002；3.永安市林业局，福建 永安 366038）
Author(s):
 LU Xue-ting1; 2; CAO Bi-feng3; YANG Zhang-ping1; 2; YAN Xia-fan1; 2; SONG Xian-fen1; 2; YU Kun-yong1; 2*; LIU Jian1; 2
 (1.College of Forestry,Fujian Agriculture and Forestry University,Fuzhou 350002,Fujian,China；2.University Key Lab for Geomatics Technology & Optimize Resource Utilization in Fujian Province,Fuzhou 350002,Fujian,China; 3.Yong’an Forestry Bureau,Yong’an 366038,Fujian,China)
关键词:
 ; 毛竹扩张; 空间结构; 单木提取; 无人机遥感; Voronoi图
Keywords:
Phyllostachys edulis expansion;  spatial structure;  single wood extraction;  UAV remote sensing;  Voronoi diagram
分类号:
S758.5
DOI:
10.3969/j.issn.1001-7461.2023.05.25
文献标志码:
A
摘要:
 林分空间结构是影响林木生长过程、森林生态系统结构和功能的重要因素，研究毛竹扩张杉木林的空间结构变化规律，对毛竹扩张防控及精准经营具有重要意义。以天宝岩自然保护区的毛竹-杉木混交界面为研究对象，设置不同扩张程度，基于无人机遥感影像，实现林分单木位置提取及毛竹和杉木识别；结合Voronoi图，获取林分空间结构相关参数，构建林分空间结构评价指数，揭示毛竹向杉木林扩张不同程度林分空间结构变化特征。结果表明，林分平均角尺度、混交度、大小比数和林分空间结构评价指数分别为0.50~0.55、0.48~0.51、0.25~0.55、0.20~0.50，且随扩张程度的加深，均表现为先增后减的趋势，在毛竹和杉木数量占比接近1:1时，空间结构评价指数达到最大值，林分空间结构整体最优。研究所构建的林分空间结构评价指数，可以有效地反映林分空间结构的整体状况，为揭示毛竹扩张杉木林演化机制提供基础数据。
Abstract:
 The spatial structure of stand is an important factor affecting the growth process of trees and the structure and function of forest ecosystem.It is of great significance to study the changes of spatial structure of Phyllostachys edulis and Cunninghamia lanceolata forests for the prevention and control of P.edulis expansion and accurate management.Therefore,the mixed interface of P.edulis and C.lanceolata in the Tianbaoyan Nature Reserve was selected as the research objecthe location of individual trees in the stand was extractedhe identification of P.edulis and C.lanceolata was realized based on unmanned aerial vehicle (UAV) remote sensing images.Based on Voronoi diagram,the parameters related to stand spatial structure were obtained,and the comprehensive index of stand spatial structure was constructed to reveal the change characteristics of stand spatial structure in different degrees of P.edulis expansion to C.lanceolata.The results showed that the stand average angle scale,mixing degree,size ratio and stand spatial structure evaluation index were 0.50-0.55,0.48-0.51,0.25-0.55 and 0.20-0.50,respectively,and all showed a trend of increasing first and then decreasing with the expansion degree.When the proportion of P.edulis and C.lanceolata was close to 1:1,the spatial structure evaluation index reached the maximum value,and the overall spatial structure of the stand was optimal.The evaluation index of stand spatial structure constructed in this study can effectively reflect the overall status of stand spatial structure,and provides basic data for revealing the evolution mechanism of P.edulis and C.lanceolata forests.

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备注/Memo

备注/Memo:
 收稿日期：2022-06-21修回日期：2022-07-14
基金项目：高校产学合作项目（2020N5003）；福建省高校重点实验室建设（KJG20104A）。
第一作者：陆雪婷。研究方向：林业“3S技术”应用。E-mail：2673787845@qq.com
*通信作者：余坤勇，教授。研究方向：资源监测及3S技术应用。E-mail：yuyky@126.com
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