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Çѱ¹È¯°æ»ý¹°ÇÐȸ / v.17, no.4, 1999³â, pp.459-465
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( Shoot Cutting Effects on the Productivity and Nutrient Removal of Some Wetland Plants )
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This work focused on the effects of the timing and the frequency of shoot cutting to maximize the productivity and the nutrient removal of three emergent macrophytes, Phragmites communis, Zizania latifolia and Typha angustifolia in natural wetlands. Shoot cutting significantly enhanced biomass production and resulted in more nitrogen and phosphorus removal from water in these three experimental species, compared to those of control. However, the frequency and the timing of shoot cutting, and the enhancement ratio were different among three species. For Phragmites stands, the highest productivity was 1.9 times of control in June treatment of the first year experiment, while 1.3 times in May treatment of the second year experiment. Zizania and Typha stands were both 1.2 times of control in August treatment and June and August treatment. Calculating the total annual removal rate of nitrogen and phosphorus based on the highest productivities among treatments, in Phragmites stands, 2.0 times of nitrogen and 1.8 times of phosphorus were removed in the first year, and both 1.4 times in the second year experiment. Likewise, for nitrogen and phosphorus; 2.4 and L.8 times in Zizania stands, and 1.8 and 1.9 times in Typha stands were removed. Overall, these results suggested that cutting treatment of shoots be effective. Thus, shoot cutting of two times during a growing season were recommended to maximize the effects: that is, in May or June, and October for Phragmites stands, and in August and October fur Zizania and Typha stands.
 
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Shoot cutting;Productivity;Nitrogen;Phosphorus;Wetland;Phragmites communis;Zizania latifolia;Typha angustifolia;Emergent macrophytes;Water quality;
 
ȯ°æ»ý¹° / v.17, no.4, 1999³â, pp.459-465
Çѱ¹È¯°æ»ý¹°ÇÐȸ
ISSN : 1226-9999
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199911921495035)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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