| 要旨トップ | 目次 | 日本生態学会第59回全国大会 (2012年3月,大津) 講演要旨
ESJ59/EAFES5 Abstract


一般講演(ポスター発表) P2-020A (Poster presentation)

The response of self-organization of a tropical seasonal rain forest to drought stress

Qinghai Song*, Yiping Zhang, Hua Lin, Zhenghong Tan, Junfu Zhao, Junbin Zhao

Relatively small changes in tropical rain forest dynamics have the potential to substantially affect the canopy structure and gross ecosystem productivity and thus the rate of climate change itself,such as the drought events. Xishuangbanna is on the northernmost edge of tropical Asia.From later in 2009 through 2010, Xishuangbanna experienced the severe drought on record from 1959, providing a unique opportunity to directly evaluate self-organization of tropical forest to drought stress.Ecosystem’s operational self-organization are particularly useful for studies of complex terrestrial ecosystems. The result showed that the tropical rain forest has higher self-organization in 2009 than that of other years. The lowest energy capture ability (Rn/DR) occurred during the dry season (March-April) in 2010, which coincided with the period of lowest LAI. Thermal response number of canopy temperature (TRNc) and Rn/DR showed similar trends and decreased from the rainy season to the dry seasons during 2008-2010. In the dry season has lowest value in 2010. Long wave radiation (I/DR) loss rates in 2010 were higher than that in 2008 and 2009. These results emphasized that environmental conditions such as during a severe drought, will modify the self-organization of the tropical rain forest.


日本生態学会