江西赣州桉树人工林立地类型划分及评价  

Site classification and evaluation of Eucalyptus plantations in Ganzhou,Jiangxi Province

作　　者：申琳琳 邓海燕 林洪[2] 张港隆 莫晓勇 刘丽婷[2] SHEN Linlin;DENG Haiyan;LIN Hong;ZHANG Ganglong;MO Xiaoyong;LIU Liting(College of Forestry and Landscape Architecture,South China Agricultural University,Guangzhou 510642,Guangdong,China;Jiangxi Academy of Forestry,Nanchang 330032,Jiangxi,China)

机构地区：[1]华南农业大学林学与风景园林学院,广东广州510642 [2]江西省林业科学院,江西南昌330032

出　　处：《中南林业科技大学学报》2022年第5期33-43,共11页Journal of Central South University of Forestry & Technology

基　　金：国家重点研发计划项目“桉树高效培育技术研究”(2016YFD0600505);江西省林科院重大专项“低效阔叶林森林质量提升关键技术研究”(2017511201)。

摘　　要：【目的】对江西赣南地区桉树人工林进行立地类型划分及质量评价,确定桉树适宜生长环境,为该地区桉树人工林经营管理提供科学参考。【方法】以江西省赣州市桉树人工林为研究对象,采用典型抽样方法选择30块具有代表性的桉树人工林标准地,调查样地内桉树树高、胸径、林龄等林分因子和海拔、坡度、坡向、坡位、林下植被种类、土壤质地及土壤养分等环境因子,利用主成分分析、原始数据分类及方差分析等方法分析各调查因子对桉树生长状况的影响,利用数量化理论I建立桉树优势高与立地因子之间的关系模型。【结果】(1)林下植被种类、林龄、坡向、坡位、海拔、土壤养分共6个因子与桉树优势树高生长拟合的数量化模型复相关系数为0.830,F适用性检验达到了显著水平(P<0.05)。(2)在各立地因子中,林下植被种类、坡向、坡位对桉树优势高生长贡献率达64.64%,为影响桉树生长的主导因子,其中林下植被种类的影响显著(P<0.05)。(3)30个桉树人工林共划分4个立地类型区,13个立地类型组,19个立地类型,质量评价等级为中及中等以上的桉树人工林占比为40%。【结论】选择林下植被种类丰富、半阴坡或阴坡、上坡位或中坡位、海拔100~200 m的立地环境,采用科学完善的经营管理措施,可更好地发挥江西赣南地区桉树人工林的生长潜力,使桉树在江西赣南地区的发展前景更广阔。【Objective】In order to determine the suitable growth environment for Eucalyptus,the site types and quality of Eucalyptus plantations in southern Jiangxi were classified in this study.【Method】Taking the Eucalyptus plantations in Ganzhou city,Jiangxi province as the research object,by using the typical sampling method,thirty representative plots of Eucalyptus plantations were investigated with stand factors(the tree height,diameter at breast height,age of forest)and environmental factors(altitude,gradient,slope aspect,slope position,understory vegetation,soil texture and soil nutrients),the effects of various investigation factors on the growth status of Eucalyptus were analyzed by principal component analysis and variance analysis.The relationship model between the dominant height of Eucalyptus and site factors was established by quantitative theory I,to classify the site types and evaluate site quality.【Result】(1)The complex correlation coefficient of the six factors,including understory vegetation type,stand age,slope aspect,slope position,altitude and soil nutrient,was 0.830,and the F applicability test reached a significant level(P<0.05).(2)Among all site factors,the main factors including understory vegetation type,slope aspect and slope position contributed 64.64%to the dominant growth of Eucalyptus.The influence of understory vegetation type was significant(P<0.05).(3)The thirty Eucalyptus plantations were divided into 4 site type areas,13 site type groups and 19 site types.The proportion of Eucalyptus plantations with a quality evaluation level of medium and above was 40%.【Conclusion】The growth potential of Eucalyptus plantations can be improved by selecting the site areas with rich understory vegetation,semi-shady slopes or shady slopes,up or middle slopes,an altitude of 100-200 m,and adopting scientific and excellent management measures,which will be beneficial to the development prospect of Eucalyptus in southern Jiangxi Province.

关 键 词：桉树 立地因子 立地类型 立地质量评级 赣州市 

分 类 号：S757.43[农业科学—森林经理学] S792.39[农业科学—林学]