云杉属植物幼苗的异速比例关系  

Allometric scaling relationships of Picea seedlings

作　　者：王志强[1] 黄恒[1] 李江涛[1] 李晓炜[1] 陈仁飞 姚步青[2] 邓建明[1] 

机构地区：[1]兰州大学生命科学学院,草地农业生态系统国家重点实验室,甘肃兰州730000 [2]中国科学院西北高原生物研究所,青海西宁810008

出　　处：《草业科学》2014年第3期415-422,共8页Pratacultural Science

基　　金：国家科技部重大研究计划(2014CB954203);国家自然科学基金项目(31000286;31270753;31322010);教育部新世纪人才(邓建明NCET-10-0463)

摘　　要：本研究以云杉属(Picea)8个物种幼苗为例,通过系统测定其地上、地下呼吸速率,年均净生产力,叶生物量以及总生物量,研究各特性相互间的异速比例关系(Allometric Scaling Relationship)。结果表明,1)在异化速率方面,云杉8个物种经温度修正的平均单株地上、地下呼吸速率与相应生物量的异速指数分别为0.876和0.817;2)在同化速率方面,平均单株叶生物量与平均单株年净生产力的异速指数为1.191,平均单株叶生物量与其平均总生物量的异速指数为0.940,两者的异速指数非常接近代谢异速理论对植物小个体代谢速率指数为1的预测;3)不论是植物个体平均地上生物量与地下生物量间的异速指数(1.090),还是经温度修正的平均单株地上呼吸速率与地下呼吸速率的异速指数(1.168)均很接近理论预测值1。In the present paper, some indices of eight Picea species seedlings were measured which included aboveground, underground respiration rate, annual net primary productivity, leaves and whole-plant biomass. The allometric scaling relationships between these measured traits were also analyzed. For alienation, the average aboveground and underground respiration rates corresponding to biomass per plant after temperature-corrected was 0.876, 0.817, respectively. For assimilation, the average annual net primary productivity per plant corresponding to average leaves biomass per plant was 1.191. The average leaves biomass per plant corresponding to average whole-plant biomass per plant was allometric scaling at 0.940. Both of the above allometric exponents were close to theoretical prediction value of 1 for small plants. Interestingly, the scaling exponents of average aboveground biomass per plant corresponding to underground biomass per plant （1.090） and temperature-corrected aboveground respiration per plant corresponding to underground respiration per plant （1.168） were consistent with the theoretical predictions value of 1.

关 键 词：异速比例关系 地上和地下呼吸速率 年净生产力 生物量 云杉幼苗 

分 类 号：Q948[生物学—植物学]