向海湿地植被生产力与水禽多样性关系的研究

The study on the relationship between vegetation productivity and waterfowl diversity in Xianghai wetland

湿地植被与湿地水禽是湿地生态系统的重要组成部分,也是湿地生态系统发挥其生态服务功能的基础.2010年、2011年夏季,通过对向海湿地5个调查样点水禽种类、数量进行的观察统计,获取了水禽多样性的信息,通过卫星遥感数据计算的归一化植被指数(NDVI)获取同一时间段不同样点的湿地植被生产力情况,分析了不同样点间水禽多样性与植被生产力间的关系.结果表明:5个调查样点中同发滚水坝的植被生产力最高,水禽多样性也较高;付老文泡的植被生产力较低,水禽多样性也最低.水禽多样性指数与植被生产力呈正相关关系,但线性关系不明显.影响两者间关系的主要因素为有天气、交通等自然因素,农田劳作、放牧、捕鱼等人为干扰因素,以及调查过程中水禽活动本身具有一定的随机性.本研究为探索利用卫星遥感影像数据监测与评估水禽多样性的方法提供了依据.

The vegetation and waterfowl are main components in wetland ecosystem,which are also the foundation of wetland ecological service function.In this study obtained the waterfowl diversity of different sites in Xianghai National Nature Reserve by conducting a survey in the summer of 2010 and 2011.And also obtained the vegetation productivity at the same sites by analyzing the NDVI from Landsat images of 2010 and 2011.Based on the analysis of the relationship between waterfowl diversity and NDVI,found that there is positive correlation between vegetation productivity and waterfowl diversity index,while the linear correlation is not significant.The main factors which affected this relationship include natural factors such as weather,traffic;human factors such as working,grazing,fishing and waterfowl＇s randomizing activity.This study lays the good foundation for exploring the method of monitoring and assessment of the waterfowl diversity by remote sensing data.