摘要
为更好发挥银叶金合欢(Acacia podalyriifolia)在广东省低效生态公益林森林景观的提升作用,应用该树种在韶关、广州、珠海市3个不同纬度区域和马尾松林Pinus massoniana、相思林、尾叶桉林Eucalyptus urophylla、黄土裸地边坡4种不同林型中进行森林景观改造试验,结果表明:(1)适用于3个不同纬度区域和4种不同林型风景林改造;(2)1 a生苗高、地径和冠幅生长指标和苗木开花结实比例随纬度降低呈增长趋势,其中冠幅生长指标差异达到显著水平(P<0.05),苗高、地径和冠幅生长指标和开花结实比例与纬度区域内年平均气温、年降雨量、最低月平均气温成正相关,并与冠幅生长指标达到显著正相关(P<0.05);(3)4种不同林型风景林改造的银叶金合欢,其1 a生苗木树高、地径和冠幅生长指标,呈相思林>马尾松林>尾叶桉林>黄土裸地边坡的生长趋势,并均达到极显著差异水平(P<0.01),而开花结实的苗木所占比例则呈马尾松林>相思林>尾叶桉林>黄土裸地边坡;1 a生银叶金合欢苗木树高、地径、冠幅生长与林型土壤中的自然含水量、田间持水量、全磷、全钾、有效磷达到极显著正相关(P<0.01),与土壤容重、土壤酸碱度、速效钾则达到显著负相关(P<0.05)。
In order to test effect of Acacia podalyriifolia on inefficient ecological forest,it was planted in three different localities(Shaoguan City,Guangzhou City and Zhuhai City),as well as in four different forest types(Pinus massoniana plantation,Acacia plantation,Eucalyptus urophylla plantation and bare fallow),the results showed that:①Acacia podalyriifolia were suitable for three different latitudes and four different forest types.②1-year seedling height,ground diameter,crown diameter and amounts of flowering and fruiting ratio showed an increasing trend with decreasing latitude,of which crown diameters growth showed significant difference(P<0.05).Seedling height,ground diameter,crown diameter and amounts of flowers and fruits ratio were positively related to annual average temperature,annual precipitation,monthly average temperature,of which crown diameters growth showed positive significant difference(P<0.05).③In four different forest types,growth indecies(seedling height,ground diameter and crown diameter)showed the trends that Acacia plantation>P.massoniana plantation>Eucalypt plantation>bare fallow,all the differences were significant(P<0.01),while amounts of flowering and fruiting individuals showed P.massoniana plantation>Acacia plantation>Eucalypt plantation>bare fallow.1-year seedling height,ground diameter,crown diameter were positively significant correlated to water content,water capacity,phosphorus content,potassium content and effective phosphorus(P<0.01),however,they were negatively significant correlated to soil bulk density,pH and available potassium(P<0.05).
作者
唐洪辉
赵庆
杨洋
许东先
严俊
张梅兰
梁卫芳
TANG Honghui;ZHAO Qing;YANG Yang;XU Dongxian;YAN Jun;ZHANG Meilan;LIANG Weifang(Guangdong Provincial Key Laboratory of Silviculture,Protection and Utilization/Guangdong Academy of Forestry,Guangzhou, Guangdong 510520,China;Nanxiong Institute of Forestry Science,Shaoguan,Guangdong 512400,China;Gaoming Institute of Forestry Science,Foshan,Guangdong 528512,China)
出处
《林业与环境科学》
2018年第6期77-84,共8页
Forestry and Environmental Science
基金
引进国际先进林业科学技术项目(2015-4-06)资助
林业公益性行业科研专项经费(201404301)资助
关键词
银叶金合欢
林型
生长指标
相关性
Acacia podalyriifolia
latitude
forest type
grow index
correlation
