摘要
[目的]通过研究生物防火林带的多树种多比例配置及人工抚育措施,以期促进林带由单一林分结构向多功能林分结构过渡,从而提升生物防火林带景观质量。[方法]以木荷生物防火林带为研究对象,通过林下套种杨梅、火力楠、米老排形成多树种组成林分,并设置不同套种树种组成比例、不同修枝程度、不同施肥量等抚育措施进行林分改造,采用正交试验设计,筛选出可提升生物防火林带景观价值的最优处理模式。[结果]参试生物防火林带景观美景度的评价模型为:Y=-2.122+0.215X_(1)-0.181X_(3)+0.306X_(5)+0.275X_(8)+0.370X_(9),Y表示生物防火林带美景度评价值,X_(1)、X_(3)、X_(5)、X_(8)、X_(9)分别表示绿视率、胸径变异系数、郁闭度、意境美和林内光线。抚育处理4(A_(2)B_(1)C_(2)),即在以木荷为主要树种,杨梅、火力楠、米老排均占木荷数量1/7的树种组成基础上,进行枝下高占树高1/5的修枝和1年施2次氮磷钾复合肥,其林分美景度值最大。与修枝和施肥处理相比,树种组成比例对防火林带景观美景度的影响更大。[结论]多树种抚育改造模式可增加生物防火林带景观层次感,达到提升景观美景度的效果。
[Purpose]Investigation on biological fireproof forest belt with multiple tree species and proportion,in combination with scientific tending measures will advance the transition from single stand structure to multifunctional stand structure,so as to improve the landscape quality of biological fireproof forest belt.[Method]The biological fireproofing forest belt of Schima superba was diversified by interplanting multiple tree species,including Morella rubra,Michelia macclurei and Mytilaria laosensis,with different composition under the forest,and further renovated with various pruning degrees and fertilizer application rates.And orthogonal experiment was conducted to work out the optimal tending measure to construct biological fireproofing forest belt with greater landscape beauty value.[Result]The evaluation model on landscape beauty degree(Y)of biological fire protection forest belt was as follows:Y=-2.122+0.215X_(1)-0.181X_(3)+0.306X_(5)+0.275X_(8)+0.370X_(9)(X_(1):green vision rate,X_(3):coefficient of diameter variation,X_(5):canopy degree,X 8:beauty value of artistic conception,X_(9):lightness in the forest).The highest landscape beauty value was achieved under tending treatment 4(A_(2)B_(1)C_(2)),namely Morella rubra,Michelia macclurei and Mytilaria laosensis each accounting for 1/7 of the number of S.superba with under-branch height reaching 1/5 tree height and application of NPK compound fertilizer twice per year.Compared with pruning and fertilization,the composition of tree species had greater influence on the landscape beauty of shelter belt.[Conclusion]The tending and renovation with multiple tree species can improve the landscape hierarchy of fireproof forest belt,thus increasing the landscape beauty.
作者
张婷
吴镜辉
李娜娜
黄健
曹越
吴鹏飞
ZHANG Ting;WU Jinghui;LI Nana;HUANG Jian;CAO Yue;WU Pengfei(College of Forestry,Fujian Agriculture and Forestry University,Fuzhou,Fujian 350002,China;Fujian Provincial Colleges and University Engineering Research Center of Plantation Sustainable Management,Fuzhou,Fujian 350002,China;Fujian Shanghang Baisha Forestry Farm,Shanghang,Fujian 364205,China)
出处
《亚热带农业研究》
2023年第3期153-161,共9页
Subtropical Agriculture Research
基金
福建省林业科技项目“生物防火林景观带精准提升研究”(2021FKJ23)。
关键词
生物防火林带
景观美景度
多树种组成
木荷
biological fireproof forest belt
landscape beauty
multispecies composition
Schima superba
