英德林场不同类型林分生长及生态效应  

Growth and Ecological Effects of Different Forest Types in Yingde Forest Farm

作　　者：李裕和 李玲珍 Li Yuhe;Li Lingzhen(Yingde Forest Farm of Qingyuan,Qingyuan 511500,Guangdong,China;Guangdong Ecological Engineering Vocational College,Guangzhou 510000,China)

机构地区：[1]清远市英德林场,广东清远511500 [2]广东生态工程职业学院,广州510000

出　　处：《林业科技情报》2022年第4期7-10,共4页Forestry Science and Technology Information

基　　金：广东省林业科技创新项目(2020KJCX012)。

摘　　要：科学、合理的树种结构是森林质量健康稳定,实现可持续优质高效森林经营的前提与保障。为优化提升英德林场森林经营措施,针对全场杉木等针叶树较多,树种结构严重不平衡的问题,以9年生杉木林为参照,8~10年生枫香林、红椎林、火力楠林、木荷林、樟树林为研究对象,调查分析了6种不同类型林分的生长、枯落物储量、持水性及土壤养分等变化。结果表明:相较供试5种阔叶树种,杉木树高生长优势明显,但枫香胸径生长量与杉木无明显差异。从枯落物储量、持水能力及土壤养分含量情况来看,杉木均显著偏低。在阔叶树中,整体上以枫香、红椎生长表现较佳,枯落物储量及其持水性以枫香、樟树较高,而土壤持水量与氮、磷、钾含量以红椎最大、木荷最小。初步认为,增大林场中阔叶树林占比,既能兼顾林分生长量,也能显著提升森林生态系统稳定性。Scientific and reasonable tree species structure is the premise and guarantee of healthy and stable forest quality and sustainable high-quality and efficient forest management.In order to optimize the forest management measures in Yingde Forest Farm,aiming at the problems of large number of coniferous trees such as Cunninghamia lanceolata and serious imbalance of tree species structure in the whole field,taking 9-year-old C.lanceolata stand as the reference,8-10-year-old stands of Liquidambar formosana,Castanopsis hystrix,Michelia macclurei,Schima superba and Cinnamomum camphora as the research objects,the growth,litter storage,water holding capacity and soil nutrients of 6 different types of forest were investigated and analyzed.The results showed that compared with the five broad-leaved species tested,the height growth advantage of C.lanceolata was obvious,but the DBH growth of L.formosana was not significantly different from that of C.lanceolata.From the perspective of litter reserves,water holding capacity and soil nutrient content,C.lanceolata was significantly low.In broad-leaved trees,as a whole,L.formosana and C.hystrix had better growth performance.L.formosana and C.camphora had higher litter storage and water holding capacity,while soil water holding capacity and N,P and K contents were the highest in C.hystrix and the lowest in S.superba.Preliminarily,it was concluded that increasing the proportion of broad-leaved forests in forest farms could not only balance stand growth,but also significantly improved the stability of forest ecosystems.

关 键 词：树种结构 杉木 生长 生态安全 

分 类 号：S727.1[农业科学—林木遗传育种]