摘要
以盐城国家级珍禽自然保护区核心区为例,以三期(2002、2010、2013年)遥感影像为基础数据,通过监督分类方法研究了近10年来核心区湿地土地利用类型的变化情况,为保护区核心区进一步加强管理与保护提供科学依据。结果表明:1针对研究区,在多种分类方法中,最大似然法分类精度最高,三期影像分类总体精度分别为97.74%、98.99%和98.80%。2近10年来,米草和芦苇的面积呈增长趋势,碱蓬的面积呈减少趋势,光滩面积略有增长,鱼塘面积基本保持稳定。3近10年来,保护区核心区的人为干扰较小,境内的原生湿地保存完整,生态系统基本实现自我更新。4应控制入侵品种米草的过度繁殖,以保证湿地的可持续利用以及保护研究区的生物多样性。
In this paper,the image data in 2002,2010,and 2013 were taken as the foundation to study the dynamic changes of wetland in the core area of Yancheng national nature reserve by supervised classification methods in the past 10 years. The results showed that：（ 1） The maximum likelihood method had the highest classification accuracy,and overall classification accuracy of the images in the three periods were 99. 78%,97. 74%,and 99. 78% respectively.（ 2） In the past 10 years,the area of spartina and phragmites increased,the area of suaeda declined,the area of mudflat increased lightly and the area of ponds was relatively stable.（ 3） In the past 10 years,there was less human disturbance in the core area,the native wetland in the region was intact,and the ecosystem can basically realize self-regeneration.（ 4） It is suggested to control the excessive breeding of the spartina to ensure the sustainable utilization and protection of wetland biodiversity in the study area.
出处
《森林工程》
2015年第1期17-21,117,共6页
Forest Engineering
基金
国家948计划项目资助(2013-4-63)
南京林业大学科技创新基金项目(CX2011-24)资助
江苏高校优势学科建设工程自助项目(PAPED)
关键词
湿地
土地利用类型
影像分类
动态变化
wetland
land-use type
image classification
dynamic changes
