草业学报2019，Vol.28Issue(1)：180-187,8.DOI:10.11686/cyxb2018100
通辽火电厂储灰池植被恢复过程中硬拂子茅种群构件的结构特征
Age structure of Calamagrostis macrolepis var. rigidula populations during vegetation restoration in coal ash storage pools
摘要
Abstract
The study of age structure of plant population is vital to analyze population dynamics and predict community succession trends.Age structures of tillers, rhizomes, tiller productivity, and rhizome storage capability of Calamagrostis macrolepis var.rigidula populations were studied during vegetation restoration in coal ash storage pools of a Coal fired power plant in the Horqin grassl and regions.Age structures of C.macrolepis var.rigidula modules were analyzed under different restoration years (sample 1, spot 1 and spot 2 had been restored for 12 and 8 years respectively;sample 2, spot 1 and spot 2had been restored for 16 and 12 years respectively) and livestock disturbance recorded.The results indicated that in sample 1, the number and biomass of tillers increased with age as did rhizome length whereas rhizome biomass was stable.The number and biomass of tillers, the length and biomass of rhizomes all increased with age in 12-year and 8-year restoration spots.In two samplings, tiller productivity decreased with increase of age.It reflects the regulation strategy of population priority to young age class with high viability under disturbance.Tiller productivity of each age in the second sampling was significantly lower than first sampling in the same restoration spot.In sample 2, rhizome storage capability was lower than those in sample 2 with the exception 1arhizomes.The reason for the decline of material productivity in the second sampling in this study is that the management of the ash storage ponds was less than ideal resulting in the restoration areas being grazed by livestock.The decline of material productivity of grassl and caused by free grazing was mainly due to the fact that the grazing intensity exceeded the carrying capacity of the restored grassl and.For plant communities in the initial stages of restoration, it is very important to prevent disturbance from livestock.关键词
生态恢复/硬拂子茅/年龄结构/分蘖株/根茎Key words
ecological restoration/Calamagrostis macrolepis var. rigidula/age structure/tiller/rhizome引用本文复制引用
王柔懿,盛军,贾竣棋,李海燕,杨允菲..通辽火电厂储灰池植被恢复过程中硬拂子茅种群构件的结构特征[J].草业学报,2019,28(1):180-187,8.基金项目
国家重点研发计划(2016YFC0500602),国家自然科学基金(31672471,31670427),吉林省科技厅(20170101150JC),国家基础科学人才培养基金(J1210070)和东北师范大学本科教学质量与教学改革工程建设项目(131004003)资助 （2016YFC0500602）
