摘要
研究旨在建立湖北省日本落叶松人工林立地分类及质量评价系统,为湖北省日本落叶松人工林营林造林提供理论指导。以湖北省日本落叶松人工林为研究对象,通过调查测定80块具有代表性的日本落叶松标准地,利用主成分分析法与数量化理论Ⅰ对研究区日本落叶松人工林进行立地分类与立地质量评价。主成分分析结果表明,海拔、土层厚度、坡位、坡度、坡向5个立地因子为影响日本落叶松生长的主导立地因子,累积贡献率所包含的信息占总体信息的84.803%。数量化分析的结果表明,5个主导立地因子与基准变量拟合模型的复相关系数(R)为0.7362,中坡度、厚土层、中海拔、阳坡、中坡位立地条件更有利于日本落叶松的生长。结合因子贡献率对研究区日本落叶松人工林进行立地类型划分,共划分为16个立地类型,并对16个立地类型按照优、良、中、差4个立地等级进行评价,结果表明,研究区有90%的样地立地质量处于中上水平,较适宜日本落叶松的发展。
The aim is to establish a site classification and quality evaluation system of Larix kaempferi plantation in Hubei,to provide theoretical guidance for afforestation of L.kaempferi plantation.Based on the investigation and determination of 80 representative standard plots of L.kaempferi in Hubei,the site classification and site quality evaluation of L.kaempferi plantation were investigated by using principal component analysis and quantitative theory I.The results of principal component analysis showed that the five site factors,including elevation,thickness of soil layer,slope position,slope and aspect,were the dominant site factors affecting the growth of L.kaempferi and the cumulative contribution rate contained 84.803%of the total information.Quantitative analysis results showed that the number of complex correlations between the five dominant site factors and the benchmark variable fitting model R=0.7362.The meso-slope thick soil layer,middle elevation,sunny slope and mid-slope site conditions were more favorable for the growth of L.kaempferi.According to the factor contribution rate,the larch plantation in the study area were divided into 16 site types,and the 16 site types were evaluated according to the equivalent of excellent,good,medium and poor sites.The results showed that the quality of 90%sample sites in the study area belonged to the upper middle level,which was more suitable for the development of L.kaempferi.
作者
李斌成
许业洲
袁慧
侯义梅
李双龙
宋慧丽
杜超群
Li Bincheng;Xu Yezhou;Yuan Hui;Hou Yimei;Li Shuanglong;Song Huili;Du Chaoqun(Hubei Academy of Forestry,Wuhan 430075;Yangtze University,Jingzhou Hubei 434025;Institute of Forestry Science in Jianshi,Jianshi Hubei 445300;Forestry Research Institute of Enshi,Enshi Hubei 445000;Wuhan Baihe Landscape Design Co.,Ltd.,Wuhan 430079)
出处
《中国农学通报》
2021年第7期37-42,共6页
Chinese Agricultural Science Bulletin
基金
国家重点研发计划项目子课题“北亚热带日本落叶松高效培育技术”(2017YFD0600401)。
关键词
湖北省
日本落叶松
立地分类
立地质量评价
Hubei Province
Larix kaempferi
site classification
site quality assessment
