陕西省4个湿地芦苇生长旺盛期不同器官热值和灰分含量的比较  

Comparison on calorific value and ash content in different organs of Phragmites australis from four wetlands in Shaanxi Province during vigorous growth period

作　　者：高锦红 李俊燕 王秋亚 马咏梅 GAO Jinhong;LI Junyan;WANG Qiuya;MA Yongmei(College of Chemistry and Materials,Weinan Normal University,Weinan 714099,China)

机构地区：[1]渭南师范学院化学与材料学院,陕西渭南714099

出　　处：《植物资源与环境学报》2021年第5期72-74,共3页Journal of Plant Resources and Environment

基　　金：陕西省教育厅自然科学专项研究项目(19JS030);陕西省军民融合项目(18JMR06);渭南师范学院科研项目(2021HXXM007;2021HXXM010);渭南师范学院自然科学研究项目(18YKS06)。

摘　　要：植物热值既是评价能量与生物量转换的重要参数,也是评价植物生长状况和营养状况的有效指标,在生态系统能量研究中占有重要地位 [1-2] 。灰分能够反映植物对矿质元素的吸收和积累状况,其含量差异是造成植物热值差异的主要原因 [3] 。湿地植物热值是评价湿地生态系统能量转化的重要指标,近年来,关于湿地植物种群热值及其能量生产动态研究已成为湿地生态学研究的热点 [4-5] 。Taking Phragmites australis(Cav.)Trin.ex Steud.from wetlands in Heyang County and Fuping County of Weinan City,Nanzheng District of Hanzhong City,and Weibin District of Baoji City of Shaanxi Province as research objects,caloric value(including gross caloric value and ash free caloric value)and ash content in root,stem,leaf,and leaf sheath of P.australis during vigorous growth period(from Jun.to Aug.)were compared.Regarding the averages of three indexes of different organs of P.australis from each wetland during the experimental period,gross caloric value and ash free caloric value in each organ of P.australis from the four test wetlands are the highest in leaf and the lowest in leaf sheath,while ash content is the highest in leaf sheath and the lowest in stem or root.It is suggested that ash has some effect on caloric value of different organs of P.australis from the four test wetlands,after removing ash,the caloric value of each organ of P.australis increases in different degrees.

关 键 词：芦苇 湿地 热值 灰分含量 能量转化 

分 类 号：Q947.5[生物学—植物学] S564[农业科学—作物学]