摘要
解译及对比了1986年和2000年两个时段的松嫩平原湿地遥感图象发现湿地面积减少了37.95%。其中地表水体面积减少了22.77%;沼泽地减少了45.48%,同时湿地生态功能显著下降。湿地面积减少的主要原因是人类对湿地资源的过度索取、围垦、不合理的开发利用、大气降雨减少、土地沙化以及地下水位下降日益加重等等。针对现状提出了保护湿地的具体建议。
In this paper, the authors compare and interprete remote sensing images of Songnen plain＇s marsh in 1986 and 2000, the result shows that reduced by 37. 95%. Among them the area of the surface water the area of the marshland reduced by 45.48%, meanwhile, th marshland is very obvious. The main causes are over-ask for the marsh area of the plain body reduced by 22.77%; e ecological disturbance of the marshland resources, reclaiming land from marshes, unreasonable development and using, deficient atmospheric water, sandy soil spread, ground water lowering progressively. Some concrete suggestions are proposed in order to protect marsh ecological environment in the light of existing circumstances.
出处
《吉林地质》
2006年第2期54-57,96,共5页
Jilin Geology
关键词
湿地减少
原因
保护建议
松嫩平原
reduction of marsh area
cause
suggestion of protecting marsh
Songnen plain
