基于角尺度、混交度和胸径优势度的杉木混交林空间结构优化

doi:10.13466/j.cnki.lczyyj.2025.01.005

林草资源研究 ›› 2025›› Issue (1): 38-47.doi: 10.13466/j.cnki.lczyyj.2025.01.005

基于角尺度、混交度和胸径优势度的杉木混交林空间结构优化

陈超¹^,²^,³(), 赵吟吟¹^,², 俞家聪¹^,², 李雪建¹^,², 方庆⁴, 张晔华⁴, 宋美萱¹^,², 杜华强¹^,²()

1.浙江农林大学环境与资源学院,浙江临安 311300
2.省部共建亚热带森林培育国家重点实验室,浙江临安 311300
3.浙江省森林资源监测中心,杭州 310020
4.建德市建德林场,浙江建德 311604

收稿日期:2024-06-30 修回日期:2024-11-17 出版日期:2025-02-28 发布日期:2025-08-06
通讯作者: 杜华强,教授,博士,主要研究方向为森林资源遥感监测及碳循环遥感定量估算。Email:dhqrs@126.com
作者简介:陈超,硕士研究生,主要研究方向为森林资源遥感监测与信息技术。Email:chenchao1916@stu.zafu.edu.cn
基金资助:
浙江省“尖兵”“领雁”研发攻关计划“浙江主要森林类型提质增汇关键技术研究与应用”(2023C02035)

Optimization of spatial structure of Cunninghamia lanceolata mixed forests based on uniform,dominance and mingling

CHEN Chao¹^,²^,³(), ZHAO Yinyin¹^,², YU Jiacong¹^,², LI Xuejian¹^,², FANG Qing⁴, ZHANG Yehua⁴, SONG Meixuan¹^,², DU Huaqiang¹^,²()

1. School of Environmental and Resources Science Zhejiang A & F University,Lin'an 311300,Zhejiang,China
2. State Key Laboratory of Subtropical Silviculture,Lin'an 311300,Zhejiang,China
3. Zhejiang Forest Resource Monitoring Center,Hangzhou 310020,Zhejiang,China
4. Jiande forest farm,Jiande 311604,Zhejiang,China

Received:2024-06-30 Revised:2024-11-17 Online:2025-02-28 Published:2025-08-06

摘要/Abstract

摘要： 优化林分空间结构不仅能够提高森林质量,还可以进一步发挥森林的功能效益。以浙江省建德市梅城林场的杉木混交林为研究对象,采用乘除法对角尺度(W)、胸径优势度(U)和混交度(M)进行多目标规划,构建起林分空间结构优化模型;使用模拟退火算法对模型求解,获得最优采伐方案;对比分析模拟择伐前后林分空间结构参数及其二元分布的变化。结果表明:经过模拟择伐,林分角尺度提高了2.34%,胸径优势度下降了0.82%,树种混交度提高了11.36%,目标函数值增大了12.42%,一定程度上改善了林分的空间结构。经过择伐,林分空间结构二元分布特征更加趋向于合理。由此可见,基于角尺度、混角度和胸径优势度所构建的林分空间结构优化体系能够有效改善林分空间结构特征,为制定后续森林经营方案提供参考。

关键词: 林分空间结构, 择伐, 优化模型, 模拟退火算法, 二元分布

Abstract:

Optimizing the spatial structure of forest stands can significantly enhance forest quality and further unlock the functional and economic benefits of forests.This study focuses on the Cunninghamia lanceolata mixed forests in Meicheng Forest Farm,Jiande City,Zhejiang Province.Firstly,the uniform(W),dominance(U),and mingling(M)indices integrated into a multi-objective optimization framework using multiplication and division methods,thereby constructing a spatial structure optimization model for the forest stand.Then,the simulated annealing was applied to solve the model derive the selection cutting plan.Finally,a comparative analysis was conducted on the variations in spatial structure parameters and binary distribution of the forest stand before and after the simulated selection cutting.The results showed that,following the simulation,the uniformity increased by 2.34%,dominance decreased by 0.82%,mingling among mixed tree species increased by 11.36%,and the objective function value rose by 12.42%,which collectively improved the spatial structure of the forest stand.After selection cutting,the binary distribution characteristics of the spatial structure became more reasonable.Therefore,the forest stand spatial structure optimization system developed in this study,based on W,U,and M indices,effectively enhances the spatial structure characteristics of the forest and offers valuable insights for the formulation of future forest management strategies.

Key words: stand spatial structure, selection cutting, optimization models, simulated annealing, binary distribution

中图分类号:

S758.5

陈超, 赵吟吟, 俞家聪, 李雪建, 方庆, 张晔华, 宋美萱, 杜华强. 基于角尺度、混交度和胸径优势度的杉木混交林空间结构优化[J]. 林草资源研究, 2025,(1): 38-47.

CHEN Chao, ZHAO Yinyin, YU Jiacong, LI Xuejian, FANG Qing, ZHANG Yehua, SONG Meixuan, DU Huaqiang. Optimization of spatial structure of Cunninghamia lanceolata mixed forests based on uniform,dominance and mingling[J]. Forest and Grassland Resources Research, 2025,(1): 38-47.

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树种	株数/株	胸径/cm
树种	株数/株	最大值	最小值	极差	均值	标准差
杉木(Cunninghamia lanceolata)	524	37.3	8.2	29.1	25.6	3.6
侧柏(Platycladus orientalis)	54	27.9	5.8	22.1	11.6	4.5
马尾松(Pinus massoniana)	50	28.5	10.2	18.3	16.1	4.8
红豆树(Ormosia hosiei)	8	5.4	5.1	0.3	5.2	0.1
阔叶树	24	21.2	5.9	15.3	12.7	5.2

林分空间结构参数	参数取值
林分空间结构参数	0.00	0.25	0.50	0.75	1.00
角尺度(W)
	非常均匀	相对均匀	随机	相对聚集	非常聚集
胸径优势度(U)
	绝对优势	相对优势	中等	相对劣势	绝对劣势
混交度(M)
	零度混交	弱度混交	中度混交	强度混交	完全混交

参数	择伐前	择伐后	变化趋势	变化幅度/%
角尺度(W)	0.428	0.438	增大	2.34
胸径优势度(U)	0.485	0.481	减小	0.82
混交度(M)	0.176	0.196	增大	11.36
径阶个数/个	17	17	不变
树种个数/个	5	5	不变

基于角尺度、混交度和胸径优势度的杉木混交林空间结构优化

Optimization of spatial structure of Cunninghamia lanceolata mixed forests based on uniform,dominance and mingling

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