摘要
刺槐(Robinia pseudoacacia L.)是一种重要的木本能源树种,研究刺槐碳分配动态及品种效应有助于刺槐能源林最佳收获期及适宜发展品系的筛选。以豫西丘陵区的5个刺槐能源林品系83002、8048、8044、3-Ⅰ、84023为对象,研究了5个刺槐无性系不同器官碳含量及碳分配在不同生长发育时期的动态变化。发现刺槐不同器官平均碳含量大小排序为干>叶>枝>皮,干碳含量明显高于其他器官;刺槐碳储量在不同品系间及不同生长时期的差异均达极显著水平;冠层着生部位对叶、干、皮的碳含量均具显著或极显著影响,而对枝碳含量影响不显著;3-Ⅰ、83002和84023等3个刺槐品种在2年生末期具有相对高的单位面积碳储量,且收获期不宜早于10月初,是适宜发展的刺槐能源林品种。
Robinia pseudoacacia is an important woody energy tree.The study of the carbon distribution and its variety effect can help the selection of the best harvest period and the selection of suitable cultivated varieties for the development of Robinia pseudoacacia energy forest.Five Robinia pseudoacacia energy forest lines 83002,8048,8044,3-Ⅰ,84023 in the hilly region of western Henan Province were taken as objects.The distribution and accumulation of all C contents in different developmental stages and organs from five different clones of Robinia pseudoacacia L.in the hilly area in the West of Henan Province were studied.The results showed as follows:Average C densities of each organs decreased successively in order of trunk,leave,brunch and bark,and the C density of trunk was obviously higher than the other organs.The C storage were significantly different among different developmental stages,so did the C storage among different clones in the same stage.The growth position or direction in the canopy had significant or extremely significant effect on the carbon content of leaf,trunk and bark,but no significant effect on branch.The Robinia pseudoacacia clones 3-Ⅰ,83002 and 84023 have relatively high carbon storages at the end of 2 year,and the harvest period should not be earlier than October.The three clones are the suitable cultivars for the Robinia pseudoacacia energy forest.
作者
谭晓红
张建国
马履一
贾忠奎
段爱国
Tan Xiaohong;Zhang Jianguo;Ma Lüyi;Jia Zhongkui;Duan Aiguo(Research Institute of Forestry Chinese Academy of Forestry,Key Laboratory of Tree Breeding and Cultivation State Forestry Administration,Beijing,100091;The Key Laboratory for Silviculture and Conservation of Ministry of Education,Beijing Forestry University,Beijing,100083)
出处
《基因组学与应用生物学》
CAS
CSCD
北大核心
2019年第10期4647-4654,共8页
Genomics and Applied Biology
基金
国家自然科学基金面上项目(31570619)资助
关键词
刺槐
能源林
碳含量
生育期
C/N
Robinia pseudoacacia L.
Energy forest
Carbon density
Development stage
C/N
