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The study on the profile distribution and accumulation characteristics of organic carbon and total nitrogen in two typical marsh es in Sanjiang Plain showed that on the sediment profiles of Carex lasiocarpa marsh and Phragmites communis marsh , there existed distinct deposition horizon and illuviation horizon.
研究了三江平原2类典型湿地(毛果苔草沼泽和芦苇沼泽)沉积物剖面有机碳、全氮的分布特征与积累现状。
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Its mining area is turfy belong to Gao Han tall latitude is low a grass of bulrush liver mosses, base is turfy treatment facilities is advanced, technical force is abundant.
其矿区泥炭属高寒高纬度低位芦苇苔草型,基地泥炭加工设备先进,技术力量雄厚。
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There were generally reproductive growth in each age class ramets of Carex kirganica as well as that in Scirpus planiculmis. Furthermore, the more or less of the reproductive allocation was certain and that is the result of reproductive trade-off and the adaptation to their habitats.
长秆苔草和紧穗三棱草各龄级分株均进行有性生殖,并保持一定量的生殖分配大小,是适应生境的生殖策略权衡的结果。12个不同水分梯度生境芦苇生殖分配RA Ⅰ为5.82%~16.31%,生殖生长比率Rrg为10.68%~16.35%,2个生境毛芦苇RAI分别为9.09%和13.98%,生殖生长比率分别为22.07%和1 8.06%。
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The change extent of the water level and the falling extent the imbedded water level is the biggest in Phragmites sustralis-Carex schmidtii community, The reason is likely to be it's near to the river, and have gutters in the peatland which is near the river, which makes the water enter the river easily, and so make the change extent bigger.
水位变化幅度在芦苇-苔草群落中最大,这可能是由于该区距离河流较近,而且人为的在泥炭地与河流相接处挖排水沟渠,使泥炭地中的水更容易的进入河流,使之变化速率较快,变化幅度较大。
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PHRAGMITES:蘆葦屬
低位泥炭:分布于地势低洼处,季节性积水或常年积水,水源多为含矿物质较高的地下水.主要生长着需要矿质养分较多的植物如苔草属(Carex),芦苇属(Phragmites)等.一般分解程度较高,酸度较低,呈微酸性反应,灰分元素和氮素含量较高,持水量小,