三种克隆植物在黑臭水体营养盐胁迫下的形态响应  

Morphological Responsesof Three Clonal Plants under Nutrients Stress in Malodorous Water

作　　者：张勇[1,2] 黄健[1,2] 张华[1,2] 宋箭[1,2] 黄显怀[1,2] 

机构地区：[1]安徽建筑大学环境与能源工程学院,安徽合肥230601 [2]"水污染控制与废水资源化"安徽省级重点实验室,安徽合肥230601

出　　处：《安徽建筑大学学报》2015年第3期94-98,共5页Journal of Anhui Jianzhu University

基　　金：国家"十二五"水专项(2014ZX07303-003-09);国家"十二五"科技支撑计划(2012BAJ08B03);安徽省科技攻关项目(1301032137-04)

摘　　要：为研究水生克隆植物在营养盐胁迫下的响应行为,本试验在黑臭河道现场水培三种克隆植物梭鱼草、睡莲和轮叶狐尾藻,测试了其生长期间株高、茎径、叶面积、分株数、间隔子长度等形态学指标。结果发现:在黑臭水体中,水生克隆植物的形态学特征受氮的影响显著,与氨氮浓度显著负相关,硝氮浓度显著正相关;根茎型水生克隆植物的的株高、茎径、叶面积、克隆存活数以及间隔子长度均显著变化,具有更好的抗逆性和适应性。In order to illustrate morphological responses to nutrients stress, the three clonal plants, Pontederia cordata of rhizomatous type, Nymphaea tetragona of tuberous type and Myriophyllurn verticillatum of stoloniferous type were cultured in the malodorous water. Through detected morphological indexes of three plants, including plant height, stem diameter, leaf area, tiller number and spacer length, and regression correlation analysis of clonal plant＇s responses and strategies under high nutrient levels. The results showed that exogenous nitrogen had obvious effects on phenotypic plasticity of clonal plant, in terms of the morphological characteristics. There was a significant negative correlation between three hydrophytes and ammonia nitrogen concentration, and a significant positive correlation with nitrate nitrogen. In addition, the aquatic clonal plant of rhizomatous type had significant changes on five morphological indexes under nutrients stress and had better resistance and adaptability than the others.

关 键 词：水生克隆植物 黑臭水体 形态学特征 营养盐胁迫 

分 类 号：X172[环境科学与工程—环境科学]