三江平原国际重要湿地保护有效性遥感评价

Remote sensing evaluation of wetland conservation effectiveness in Sanjiang plain

以三江平原国际重要湿地为研究对象,以Landsat TM/OLI遥感影像为数据源,利用面向对象的分类方法得到2000年和2013年的土地覆盖数据,对比分析国际重要湿地景观指数动态变化,并对干扰保护成效的自然及人为驱动因素进行探讨。结果表明:三江平原国际重要湿地保护有效性不明显,自然湿地仍呈损失趋势,自然湿地景观趋于破碎;斑块不规则程度增加;2000—2013年,三江平原6个国际重要湿地自然湿地主要转化为耕地,占自然湿地损失总面积的79.73%,其中,三江湿地自然湿地减少面积最多,兴凯湖湿地自然湿地面积增加最多,但破碎化程度增加;2000—2013年,三江平原气候条件适宜湿地保育和恢复,但受人为因素影响,保护区自然湿地损失趋势严峻。

Based on the Wetlands in Sanjiang Plain of international importance as the research object,using Landsat TM/OLI images as the data source and using object oriented classification method to get the land cover data in 2000 and 2013comparative analysis of the international important wetland landscape dynamic change index,and the interference protection effects of natural and human driving factors were discussed.The results showed that the international importance Wetlands of the Sanjiang Plain was still not obvious,natural wetland landscape tended to be broken;irregular plaque increased;From 2000 to 2013,six international important and natural wetlands mainly into arable land,natural wetland loss accounted for79.73% of the total area;the Sanjiang wetland natural wetland to reduce the largest area of natural wetlands in Xingkai Lake wetland area increased most,but the fragmentation degree increased;2000—2013years in Sanjiang plain climatic conditions suitable for wetland conservation and restoration,but affected by human factors theloss of natural reserve wetland was serious.