摘要
对祁连山典型林分的建群种青海云杉和祁连圆柏不同林龄的生物量和净生产力进行了研究.结果表明:青海云杉的平均生物量为282.544t/hm2,祁连圆柏的平均生物量为248.764t/hm2,青海云杉和祁连圆柏不同器官分配的生物量大小顺序均为:干(61.19%,58.82%)>根(28.17%,22.73%)>枝(6.47%,14.15%)>叶(2.77%,2.83%)>果(1.40%,1.47%);青海云杉和祁连圆柏净生产力分别是5.249和5.280t/(hm2.a),年枯死凋落量和各器官年生长量大小均为:枯落物(39.09%,43.45%)>果(24.77%,22.73%)>干(16.66%,15.02%)>枝(8.70%,11.33%)>根(7.05%,5.07%)>叶(3.73%,2.40%).
The biomass and net productivity of typical forest stand dominant species Picea crassifolia and Sabina przewalskii at different average age in the Qilian Mountains were studied.The results showed that the biomass of Picea crassifolia was 282.544 t/hm2,the biomass of Sabina przewalskii was 248.764 t/hm2,different organs biomass distribution size sequence of Picea crassifolia and Sabina przewalskii were trunk（61.19%,58.82%）root（28.17%,22.73%） branch（6.47%,14.15%） leaves（2.77%,2.83%） fruit（1.40%,1.47%）;net primary productivity were 5.249 and 5.280 t/（hm2·a） of Picea crassifolia and Sabina przewalskii,its annual die litter quantity and each organ in growth size were litter（39.09%,43.45%） fruit（24.77%,22.73%） trunk（16.66%,15.02%） branch（8.70%,11.33%） root（7.05%,5.07%） leaves（3.73%,2.40%）.
出处
《甘肃农业大学学报》
CAS
CSCD
北大核心
2011年第6期81-85,共5页
Journal of Gansu Agricultural University
基金
林业公益性行业科研专项(200804006/rhh-07)
林业公益性行业科研专项(200904022-4)
关键词
祁连山
青海云杉
祁连圆柏
生物量
净生产力
Qilian Mountains
Picea crassifolia
Sabina przewalskii
biomass
net productivity
