| 杉木人工林目标树经营技术参数的研究 |
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| 引用本文： | 任蕾,徐端妙,吴初平,焦洁洁,刘日林,朱锦茹,孙杰杰,袁位高.杉木人工林目标树经营技术参数的研究[J].浙江林业科技,2019(2):1-6. |
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| 作者姓名： | 任蕾 徐端妙 吴初平 焦洁洁 刘日林 朱锦茹 孙杰杰 袁位高 |
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| 作者单位： | 浙江农林大学林业与生物技术学院;景宁畲族自治县林业总场;浙江省林业科学研究院 |
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| 基金项目： | 浙江省重大科技计划(2015C02016) |
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| 摘 要： | 对浙江省杉木Cunninghamia lanceolata主要分布区51个不同发育阶段杉木人工林典型样地调查,分析不同优势木高杉木人工林的径级结构,并利用126株优势木数据,建立杉木人工林优势木的胸径、树高、冠幅之间关系,得出胸径与树高相关关系的最佳回归方程为:Y=0.361 8X+4.497 9,模型的拟合度R^2=0.796 5(X表示胸径,Y表示树高);胸径和冠幅的相关关系的最佳回归方程为:Y=0.137 9X+0.858 9,模型的拟合度R^2=0.881 6(X表示胸径,Y表示冠幅)。通过对3株50年生杉木人工林大径级林分优势木的树干解析,研究大径级杉木人工林优势木的胸径、树高与材积的生长规律,结果显示生长率都呈现逐年降低趋势,树高较为明显。树高、胸径、材积生长率最大值出现在10年生时分别为5.278 7%,15.069%,25.895%;而50年生时仅为0.273 3%,0.186 9%,0.921 7%。研究提出杉木人工林目标树经营的发育阶段划分、合理密度、目标树数量等关键经营技术参数,为杉木人工林的目标树经营提供理论依据。
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| 关 键 词： | 杉木 目标树 发育阶段 人工林 |
Study on Parameters of Target Tree in Chinese Fir Plantation |
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| REN Lei,XU Duan-miao,WU Chu-ping,JIAO Jie-jie,LIU Ri-lin,ZHU Jin-ru,SUN Jie-jie,YUAN Wei-gao.Study on Parameters of Target Tree in Chinese Fir Plantation[J].Journal of Zhejiang Forestry Science and Technology,2019(2):1-6. |
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| Authors: | REN Lei XU Duan-miao WU Chu-ping JIAO Jie-jie LIU Ri-lin ZHU Jin-ru SUN Jie-jie YUAN Wei-gao |
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| Institution: | (College of Forest and Biotechnology,Zhejiang A & F University,Hangzhou 311300,China;Forest Farm of Jingning She Autonomous County of Zhejiang,Jingning 323500,China;Zhejiang Academy of Forestry,Hangzhou 310023,China) |
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| Abstract: | Establishment of 51typical sample plots with different aged artificial plantations of Cunninghamia lanceolata was carried out in Zhejiang province. 126 dominant trees and 3 sample trees were selected for determination of DBH, height and crown diameter. Analysis demonstrated that the best regression equation for relationship between DBH and height of dominants was Y=0.361 8X+4.497 9, R^2=0.796 5. The best regression equation for correlation between DBH and crown diameter was Y=0.137 9X+0.858 9, R^2=0.881 6. Stem analysis on 3 sample trees showed that the maximum tree height, DBH, and volume growth was at 10-year, respectively 5.278 7%, 15.069%, and 25.895%, and only 0.273 3%, 0.186 9%, and 0.921 7% at 50-years. Parameters such as the development stage division, reasonable density and the number of target trees of Chinese fir plantation were suggested. |
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| Keywords: | Cunninghamia lanceolata target tree developmental stage artificial forest |
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