Current Status and Prospect of Researches on Wetland Monitoring Based on Remote Sensing
LI Jianping， ZHANG Bai， ZHANG Ling et al.

1. 中国科学院东北地理与农业生态研究所， 长春 130012； 2. 吉林省地理信息工程院， 长春  130061；3. 中国科学院研究生院，北京 100038

Abstract

Wetland is one of the most important ecosystems, and it has high social benefit, economic benefit and scientific research value. Global wetland degraded and its amount decreased in the past several decades. Wetland resources are taking on a heavy pressure, and romote sensing technique plays an important role in real-time monitoring of dynamic changes of wetlands. In this paper, wetland monitoring mainly means classification and recognition of wetland based on remote sensing technique. Current status of researches on wetland monitoring based on remote sensing technique in China and abroad was systematically discussed from multiple aspects, including classification systems of wetland, pre-processing of images, remote sensing data sources of multi-resolution(multi-spatial resolution, multi-spectral resolution,multi-temporal resolution), methods of information extraction for wetlands(visual interpretation and computer auto-interpretation) and so on. Finally, three current shortcomings and six future keys of wetland monitoring based on remote sensing were presented.
Keywords: wetland；remote sensing；current status；prospect