基于MODIS的洞庭湖芦苇湿地范围研究  

Research about the Range of Dongting Lake's Marshes by Using MODIS

作　　者：杜刚[1] 付必涛[1] 凌峰[1] 

机构地区：[1]华中科技大学数字化工程中心,武汉430074

出　　处：《计算机与数字工程》2005年第9期32-34,共3页Computer & Digital Engineering

摘　　要：以洞庭湖芦苇湿地为例,利用2003年美国Terra/MODIS卫星数据,对洞庭湖芦苇湿地范围进行监测。具体测算方法包括以下几个步骤:1)根据洞庭湿地种类及洞庭湖水涨落变化规律,利用芦苇生长最茂盛期NDVI值对芦苇湿地和其他湿地种类进行大致区分。2)根据植物生长特性,利用植物生长期多时序NDVI值进一步确定洞庭芦苇湿地范围。最后,将上述测算方法的结果和实测资料进行比较,结果表明两者具有很好的一致性。Using the data of American .satellite Terra/MODIS in 2003, area of the Dongting Lake＇s bulrush marsh is ascertained The whole process includes two below steps： first, according to the kind of Dongting Lake＇s marshes and the changes of height of the water, we can distinguish the bulrush marsh and other marshes by the NDVI of the bulrush at the climax of growth; secondly, according to the speciality of all kinds of vegetation, it makes use of multitemporary NDVI to ascertain the range of the bulrush marsh. In the end, contrasting the results got from the experience to the surveying data, the results snow they are consistent !

关 键 词：MODIS NDVI 芦苇 植被 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构]