摘要
叶片是多数树木唯一能够进行光合作用的器官,其生物量至关重要,为比较不同时空年均和连年叶生物量差异性,以乌兰布和沙漠磴口绿洲田渠林路式新疆杨农田防护林为研究对象,采用空间代替时间的方法,实地调查20株各径级单木年均叶生物量并建模,并通过树干解析得出树龄及对应胸径代入年均叶生物量模型得出连年叶生物量并建模,进而得出林带林网叶生物量,比较不同时空年均和连年叶生物量差异。结果表明:幼龄林年均叶生物量为(1.1128±0.6286)kg,中龄林、近熟林和成熟林分别比上一林龄增长5.0、1.7和2.5倍,但增长速率成熟林最大;幼龄林连年叶生物量为2.0133 kg,中龄林、近熟林和成熟林分别增长6.1、4.7和3.0倍;幼龄林、中龄林、近熟林和成熟林连年叶生物量分别是年均的182.54%、323.10%、436.21%和515.79%;年均和连年叶生物量建模14个,经检验模型显著。结论:年均和连年叶生物量与胸径、年龄和冠幅呈正相关,成熟林最大,但增幅呈减小趋势;连年叶生物量远大于年均生物量,差距逐年增大。
[Background]Leaf is the only organ that can carry out photosynthesis in most trees,and its biomass research plays an important role in absorbing CO2,curbing global climate change and dust retention.However,the study of leaf biomass,especially for deciduous broad-leaved trees,mostly focuses on the annual leaf biomass,and then compares it with other organ biomass at different time scales,which leads to the lack of scientific results.At present,there is no calculation method of multi-year leaf biomass,which brings inconvenience to the comparative study of leaf biomass of broad-leaved tree species and the calculation of leaf carbon pool accumulation.In order to obtain the multi-year leaf biomass and its calculation method,and compare its difference with the annual leaf biomass,this study was carried out.[Methods]Taking Populus alba var.pyramidalis farmland shelterbelt in Ulan Buh Desert oasis as the research object,using the method of space instead of time,the annual leaf biomass model of 20 individual trees of different diameter classes was investigated on the spot,and the tree-age and corresponding DBH were brought into the annual leaf biomass model by stem analysis,and the multi-year leaf biomass was obtained and modeled,and then the leaf biomass of the forest belt and forest net were obtained,and the difference of annual and multi-year leaf biomass in different time and space was compared.[Results]The annual leaf biomass of single young forest was(1.1128±0.6286)kg,which increased by 5.0 times,1.7 times and 2.5 times respectively in half-mature age forest,near mature forest and mature forest.The multi-year leaf biomass of young forest was 2.0133 kg,which increased by 6.1 times,4.7 times and 3.0 times respectively in half-mature,near mature and mature forest,respectively.Ratio of multi-year leaf biomass to annual leaf biomass of young,half-mature,near mature and mature forests were 182.54%,323.10%,436.21%and 515.79%,respectively.Fourteen annual and multi-year leaf biomass models,all of which were significant or ex
作者
赵英铭
褚洋
张家祺
黄雅茹
马迎宾
唐进年
郝玉光
刘明虎
ZHAO Yingming;CHU Yang;ZHANG Jiaqi;HUANG Yaru;MA Yingbin;TANG Jinnian;HAO Yuguang;LIU Minghu(Experimental Center of Desert Forestry,Chinese Academy of Forestry/Inner Mongolia Dengkou Desert Ecosystem Research Station,State Forestry and Grassland Administration/National Long Term Scientific Research Base for Comprehensive Control of Ulan Buh Desert,015200, Dengkou, Inner Mongolia,China;Institute of Desertification Studies,Chinese Academy of Forestry,100091, Beijing,China;Experimental Centre of Forestry in North China,Chinese Academy of Forestry,102300, Beijing,China;School of Aviation,Inner Mongolia University of Technology,010051, Hohhot,China;Gansu Desert Control of Institute,730070,Lanzhou,China)
出处
《中国水土保持科学》
CSCD
北大核心
2022年第1期114-121,共8页
Science of Soil and Water Conservation
基金
中国林科院中央级公益性科研院所基本科研业务费专项资金项目“绿洲农田防护林碳储量与服务价值的研究”(CAFYBB2017MB002)。
关键词
叶生物量
新疆杨
田渠林路式
农田防护林
绿洲
leaf biomass
Populus alba var.pyramidalis
farm-canal-forest-road pattern
farmland shelterbelt
oasis
