期刊论文

EFFECTS OF FLOATING HYDROCHARIS DUBIA ON CO-CULTURED SUBMERGED MYRIOPHYLLUM SPICATUM AND CERATOPHYLLUM DEMERSUM IN DIFFERENT SEDIMENTS

中文

水生生物学报

1000-3207

2017

41

2

420-427

10.7541/2017.52

(2013ZX07104-004-03):汉丰湖湖滨带湿地生态修复技术示范 (No. CCNU16A02032):华中师范大学中央高校基本科研业务费专项资金 (2013ZX07104-004-03):Supported by Demonstration of Riparian Wetland Restoration Technology in Hanfeng Lake (No. CCNU16A02032):Self-determined Research Funds of CCNU from the Colleges' Basic Research and Operation of MOE

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研究设置了营养水平不同的3种基质,在有或无浮水植物水鳖共存的情况下,混合种植营养吸收方式不同的两种沉水植物(仅从水中吸收营养的金鱼藻和从水和基质都能吸收营养的穗花狐尾藻),探讨在不同的基质中浮水植物对沉水植物的影响。结果显示:实验中水鳖的存在均未对共存的两种沉水植物的生长产生抑制作用。当水鳖覆盖水面时,与无根的金鱼藻竞争光照和水体营养,促使其增加分枝数和茎长,并增加叶生物量的分配,最终导致水鳖的共存促进了金鱼藻的生物量积累。但与金鱼藻不同,有根的穗花狐尾藻可通过基质吸收营养,与共存的水鳖之间只存在光照竞争,使穗花狐尾藻仅以改变植株形态来适应浮水植物的表层覆盖...

Cultivating combination of different life forms is an efficient way to restore aquatic vegetation. A common combination is the floating and submerged plants. In this study, we cultivated two submerged plants with different types of nutrient uptake (rootless Ceratophyllum demersum, absorbing nutrients only from water column; and rooted Myrio-phyllum spicatum, taking up nutrients from both water and sediment) in three kinds of sediment with different levels of nutrients. The floating Hydrocharis dubia was added to explore the effects of floating plants on submerged plants in different sediments....