Studies on emission of Methane (CH_4) from Phragmites stands in the Hachirogata Central Polder

1996 - 1997年在小加田草地野生动物保护（Phagmites和Typha Stands）和山形大学农场（Paddy Field）制作的甲烷通量测量方法，使用封闭式室内方法。所获得的结果就像在后面一样。1.澳大利亚药典（CAV.）Roots * Horizontal Rhizomes * Vertical Rhizomes * Aerial Shoots * Leaves）。2.在P. Australis中，甲烷集中在此顺序中;根、水平节律、垂直节律和空中射击。3.在裸露土壤碎片和P.澳大利亚碎片中CH_4的排放率（甲基通量的比率）·Typha latifolia碎片·赖斯碎片，非常尊重1.0 ： 3.1，1.0 ： 6.3，1.0 ：4.8.4.被淹没的湿地中的P.澳大利亚碎片的甲烷通量比那些在非淹没的湿地中的要大得多。5. P. australis plot的Methane flux比那些Typha latifolia plot和Rice plot的大得多。

Methane flux measurements were made at Oogata grasslands wildlife protection (Phragmites stands and Typha stands) of the Hachirogata Central polder and Yamagata University farm (paddy field) from 1996 to 1997 by using the closed chamber method. The results obtained are as follows. 1.Phragmites australis (Cav.) Trin.ex Steud showed a marked development of the lysigenous aerenchyma throughout the whole plant (Roots * Horizontal Rhizomes * Vertical Rhizomes * Aerial Shoots * Leaves). 2.Methane concentration in P.australis decreased in this order ; roots, horizontal rhizomes, vertical rhizomes and aerial shoots. 3.Emission rates of CH_4 (a ratio of methane flux) in the bare soil plot and P.australis plot・Typha latifolia plot・Rice plot, were respectively 1.0 : 3.1,1.0 : 6.3,1.0 : 4.8.4.Methane flux of P.australis plot at flooded wetlands was much larger than that at nonflooded wetlands. 5.Methane flux of P.australis plot was much larger than those of Typha latifolia plot and Rice plot.