The Effect of Summer Harvesting of Phragmites australis on Growth Characteristics and Rhizome Resource Storage
The Effect of Summer Harvesting of Phragmites australis on Growth Characteristics and Rhizome Resource Storage
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DOI：
10.1007/s10750-005-1157-6
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发表时间：
2005
期刊：
影响因子：
2.6
通讯作者：
T. Asaeda;Lalith Rajapakse;J. Manatunge;N. Sahara
中科院分区：
文献类型：
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作者：
T. Asaeda;Lalith Rajapakse;J. Manatunge;N. Sahara
研究了芦苇在6、7月刈割后，收获地上生物量对芦苇生长的影响。对两个试验林分和一个对照林分从新生到6年生的7个年龄段的根茎生物量和总非结构性碳水化合物（TNC）的季节变化进行了监测。地上部分生物量的收获时间影响着根茎资源的年分配。一个类似的趋势，观察到的资源分配模式，描述了不同的根茎年龄类别的生物量变化为7月切割和控制站。然而，6月收获的根茎类的生物量往往小于其他两个立场，表明大大减少资源储存的直接结果收获地上生物量在前一个生长季节。这表明，在6月份采伐地上生物量是一个更好的控制磷的选择。澳大利亚人比夏天晚些时候削减。
The effect of harvesting the aboveground biomass on the growth ofPhragmites australisin the subsequent growing season was investigated following cutting in June or July. Seasonal changes in rhizome biomass and total nonstructural carbohydrate (TNC) in seven age categories, from newly formed to six-years-old, were monitored for the two treatment stands and a control stand. The growth of the stands, as indicated by the aboveground biomass, showed a significant decline due to cutting in June but did not show a significant difference due to cutting in July, compared to that of the control stand. The timing of harvesting of aboveground biomass affected the annual rhizome resource allocation. A similar trend was observed for the pattern of resource allocation, as described by biomass variation of different rhizome-age categories for July-cut and control stands. However, the biomass of June-harvested rhizome categories tended to be smaller than the other two stands, indicating substantially reduced resource storage as a direct result of harvesting the aboveground biomass during the previous growing season. This implies that cutting of aboveground biomass in June is a better option for control ofP. australisstands than cutting later in summer.