|本期目录/Table of Contents|

[1]任海,彭少麟,余作岳,等.鹤山针叶混交林的光能利用效率[J].应用与环境生物学报,1996,2(01):15-21.
 Ran Hai,Peng Shaolin,Yu Zuoyue,et al.EFFICIENCY OF SOLAR RADIATION UTILIZATION BY CONIFEROUS MIXED FOREST IN HESHAN[J].Chinese Journal of Applied & Environmental Biology,1996,2(01):15-21.
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鹤山针叶混交林的光能利用效率()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
2卷
期数:
1996年01期
页码:
15-21
栏目:
论文
出版日期:
1996-02-25

文章信息/Info

Title:
EFFICIENCY OF SOLAR RADIATION UTILIZATION BY CONIFEROUS MIXED FOREST IN HESHAN
作者:
任海 彭少麟 余作岳 蔡锡安
中国科学院华南植物研究所 广州 510650
Author(s):
Ran Hai Peng Shaolin Yu Zuoyue Cai Xi’an
South China Institute of Botany, Academia Sinica, Guangzhou 510650
关键词:
辐射能生物量热值总初级生产力针叶混交林
Keywords:
radiation energy componentsbiomentcaloric valuegross primary productivityconiferous mixed forest
摘要:
对鹤山以马尾松和湿地松为主的针叶植物混交林的辐射能、光合呼吸作用与初级生产力、生物量与器官热值等综合研究,并与同地点同龄的豆科植物混交林进行了对比和分析。结果表明:全年抵达该群落林冠上层的总太阳辐射能为4225.9MJ·m-2·a-1,林冠反射了567.6MJ·m-2·a-1,截获了1876.1MJ·m-2·a-1,仅有1792.2MJ·m-2·a-1的太阳辐射能透过林冠层;群落现存的总能量为132.0MJ·m-2·a-1,每平均净固定能量为11.8MJ·m-2·a-1;群落各树种在各器官上的能量分配中,干材积累能量占总现存能量的57.8%,枝条18.8%,叶14.9%,根系8.5%;群落冠层截获的1876.1MJ·m-2·a-1能量中有40.10MJ·m-2·a-1用于光合作用,这其中又仅有13.66MJ·m-2·a-1能量用于净初级生产力,其光能利用效率约为0.32%,虽然同站的同龄豆科植物混交林的冠层结构、净初级生产力和光能截获率均好于该针叶混交林的相应值,但由于豆科植物混交林快速生长时期短,而这些针叶树种耐贫瘠且生长稳定,也是较好的造林先锋树种,要提高其光能利用效率,可适当改造针叶林为针阔叶混文林。
Abstract:
Radiation components, photosynthesis, respiration, primary productivity, biomass, caloric value and energy utilization efficiency were measured over a coniferous mixed forest (Pinus massoniana and P. elliotii)in Heshan, Guangdong, China. The results indicated: 1. The amount of gross solar radiation reaching canopy layer was 4235.9MJ·m-2·a-1,the radtation energy reaching forest land throush the canopy was 1792.2MJ·m-2·a-1, the renected radiation was 567.6MJ·m-2·a-1,only 1876.1MJ·m-2·a-1 was intercepted by the canopy; 2. The standing crop enersy and net enersy production of the artificial forest were 132.0MJ·m-2·a-1 and 11.8MJ·m-2·a-1, respectively. Energy distribution varied with plant species and organs, 57.8% was found in trunk, 8.5% in root, 14.9% in leaf and only 18.8% in branch; 3. The amount of photosythesis was 40.10MJ·m-2·a-1,of which only 13.66MJ·m-2·a-1 was used in net primary productivity. The solar radiation utilhation efficiency was 0.32%; 4. The canopy structure,net primary productivity and radistion energy absorptance of the seven year old leguminous lorest at the same station were better(or higher)than those of the coniferous mixed forest. It is suggested that the coniferous mixed forest would be transformed into a coniferous and broad-leaved mixed forest.

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备注/Memo

备注/Memo:
收稿日期:1995-3-20;接受日期:1995-7-31。
基金项目:中国科学院重中之重06项目,国家自然科学基金。
更新日期/Last Update: 1900-01-01