【摘要】 2006~2009年,通过点样方方法对斑背大尾莺Megalurus pryeri的巢址进行了研究,获得53个样本,拂子茅Calamagrostis epigejos是营巢生境的主要草本。拂子茅浓密(628根/m2)、芦苇稀疏(20根/1.5 m2)是斑背大尾莺典型的生境,巢高度较高(23 cm)。通过相关分析发现:巢高度和拂子茅总数、绿拂子茅数量显著正相关,但若控制水位、盖度及枯苇数等因素,相关性则不强;巢高度与拂子茅与灯心草等典型草本的高度正相关。进一步分析表明,活拂子茅数量与活苇数量及其他绿草数量负相关。有巢口与无巢口的样方中绿拂子茅数量无差异。对于大尾莺的保护,应该保护芦苇-拂子茅群落,注重芦苇与拂子茅等杂草的平衡。更多还原

【Abstract】 In order to understand the habitat preference of marsh grassbirds( Megalurus pryeri sinensis) for Calamagrostis epigejos,from 2006 to 2009,we obtained 53 nest samples of marsh grassbirds through point quadrat sampling method,and found that main herbaceous plant was C. epigejos in the Yalu River estuary. Dense C. epigejos( 628 blades / m2) with sparse reeds( 20 reeds /1. 5 m2) and high nest( 23 cm) was the typical micro-habitat of marsh grassbirds. Significant positive correlation was found between nest height and numbers of total C. epigejos and green C. epigejos. However,no significant correlation was observed in partial analysis by regulating water level,vegetation cover,and numbers of dry reed through bivariate analysis. Positive correlation was also found between nest height and height of C. epigejos and Juncus gracillimus. Further analysis showed that negative correlation was observed between the numbers of live C. epigejos and live reed and other live herbaceous plants. Numbers of green C. epigejos in nests with nest entrance was similar to that in nests with no entrance. In conclusion,the reed C. epigejos community should be preserved and the manager should pay more attention to the balance between reed and C. epigejos.更多还原