芜湖湿地陌上菅的生态特性及地上部营养成分的动态指标  

Ecological characteristics and dynamics of above-ground nutritions of Carex Thunbergii Steud in Wuhu wetland

作　　者：徐礼英[1,2] 周守标[2] 刘寿峰[2] 郑和权[2] 

机构地区：[1]芜湖职业技术学院园林园艺学院,安徽芜湖241003 [2]安徽师范大学安徽重要生物资源保护与利用研究重点实验室,安徽芜湖241000

出　　处：《安徽工程大学学报》2015年第1期23-26,共4页Journal of Anhui Polytechnic University

基　　金：安徽省高校自然科学研究基金资助项目(KJ2010B257);安徽省高等学校省级自然科学研究重点基金资助项目(KJ2011A132);安徽省高等学校省级自然科学研究重点基金资助项目(KJ2011A129);安徽省自然科学基金资助项目(11040606M77)

摘　　要：通过对芜湖市龙窝湖湿地优势种陌上菅(Carex thunbergii Steud)的实地考察和采样分析,测定了不同时期陌上菅地上部高度、鲜重、干重、密度、生长速率、含水量及部分营养成分的动态变化指标.结果表明:陌上菅地上部各测定指标呈现"M"型变化趋势,在汛期过后两月均有所缓升,从11月份开始下降至2月中旬,此后开始迅速增加,在4月或5月期间达到最大值,6月开始缓降直至汛期,但密度动态变化的幅度不大.研究结果表明,陌上菅水淹后具有一定的恢复能力;在5月20日左右其生命活动最强,营养价值最高,是利用陌上菅牧草资源的最好时期.Based on the field investigation and sample analysis of Carex thunbergii Steud,the dominant species in Longwo Lake wetland of WuHu,the dynamic indicators concerning shoot height、dry weight、fresh-weight、density、growth rate、moisture content and some nutritional components of Carex thunbergii Steud aerial parts at different periods were determined.All kinds of indicators of Carex thunbergii Steud aerial parts showed a＂M＂-mode trend.They had a slow rise in two months over flood season,and continued to decline from November until middle February,then increased rapidly.During the period of April or May,the indicators reached the maximum value,then slowly declined from June until flood season,but the density indicator showed no bovious change.The result shows that Carex thunbergii Steud has a certain recovery ability over flood season,and has the strongest life activity and the highest nutritional value nearly on 20 th May,the best time for utlizing the Carex thunbergii Steud resource.

关 键 词：陌上菅 营养成分 动态变化 

分 类 号：Q945[生物学—植物学]