华北落叶松人工林凋落物组成及动态研究  

Composition of Litterfall and Dynamic Study in Larix principis-rupprechtii Plantation

作　　者：王志波[1,2,3] 白高娃 李银祥 张海东[1,2,3] 于楠楠 侯建利 刘佳 姚佳 WANG Zhi-bo;BAI Gao-wa;LI Yin-xiang;ZHANG Hai-dong;YU Nan-nan;HOU Jian-li;LIU Jia;YAO Jia(Inner Mongolia Academy of Forestry,Hohhot 010010,China;Ordos Forest Ecosystem Research Station,Inner Mongolia,Ordos 016100,China;Inner Mongolia Key Laboratory of Sandy Land(Desert)Ecosystem and Eco-engineering,Hohhot 010010,China;Ulanqab Institute of Forestry Science,Inner Mongolia,Jining 012000,China;Ulanchab Forest Pest Control and Quarantine station,Inner Mongolia,Jining 012000,China;Forestry and Grassland Bureau of Qahar Youyi Front Banner,Inner Mongolia,Tuguiwula 012200,China)

机构地区：[1]内蒙古自治区林业科学研究院,内蒙古呼和浩特010010 [2]内蒙古鄂尔多斯森林生态系统国家定位观测研究站,内蒙古鄂尔多斯016100 [3]内蒙古自治区沙地(沙漠)生态系统与生态工程重点实验室,内蒙古呼和浩特010010 [4]乌兰察布市林业科学研究所,内蒙古集宁012000 [5]乌兰察布市森林病虫害防治检疫站,内蒙古集宁012000 [6]察哈尔右翼前旗林业和草原局,内蒙古土贵乌拉012200

出　　处：《内蒙古林业科技》2021年第2期15-19,共5页Journal of Inner Mongolia Forestry Science and Technology

基　　金：内蒙古自治区自然科学基金项目(2018MS03037);“十三五”国家重点研发计划项目子课题(2017YFD060040303)。

摘　　要：以阴山山地苏木山林场华北落叶松人工林为研究对象,利用野外调查和数据分析的方法,对凋落物年凋落量、组成、月动态变化及现存量进行研究。结果表明:华北落叶松人工林凋落物年凋落总量为4.74 t·hm^(-2),其中,落叶2.64 t·hm^(-2),落枝1.53 t·hm^(-2),落果0.50 t·hm^(-2),落皮0.07 t·hm^(-2),分别占总凋落量的55.69%、32.28%、10.55%和1.48%。各组分中,落叶在10月份凋落量最大,为1.56 t·hm^(-2),落枝和落果5月份凋落量最大,分别为0.28 t·hm^(-2)和0.10 t·hm^(-2)。林地凋落物现存量为5.04 t·hm^(-2),其中,未分解层3.67 t·hm^(-2),半分解层1.37 t·hm^(-2)。研究结果可为华北落叶松人工林物质循环和林地养分平衡研究提供参考依据。Taking Larix principis-rupprechtii plantation in Sumu Mountains Forest Farm as research object,the annual amount,composition,monthly dynamic variation and standing amount of litterfall were studied by use of field investigation and data analysis.The results showed that the total annual litterfall amount of leaves,branches,cones and barks were 2.64 t·hm^(-2),1.53 t·hm^(-2),0.50 t·hm^(-2) and 0.07 t·hm^(-2),with taking up 55.69%,32.28%,10.55%and 1.48%in the total litterfall amount,respectively.Among the components,the litterfall amount of leaves in October was the largest,which was 1.56 t·hm^(-2),and that of branches and cones in May was the largest,which was 0.28 t·hm^(-2) and 0.10 t·hm^(-2).The standing amount of litterfall was 5.04 t·hm^(-2),in which,the non-decomposed layer was 3.67 t·hm^(-2) and the semi-decomposed layer was 1.37 t·hm^(-2).The results can provide a reference for the study of material cycle and forest nutrient balance of Larix principis-rupprechtii plantation.

关 键 词：华北落叶松人工林 凋落量 凋落物组成 凋落物现存量 月变化 

分 类 号：S791.229[农业科学—林木遗传育种]