摘要
近20年来三江平原湿地农田化现象十分明显,湿地农田化对人类生存环境造成一定影响。本文选取富锦和同江市为例,应用RS和GIS手段对1988年和2006年两期Landsat-5TM遥感影像进行湿地和农田面积提取,分析湿地农田化对该区气候水文、生物多样性等方面的影响,结果表明:20年来湿地减少291573.8hm2,耕地增加了499109.6hm2,同时湿地农田化给该区域带来了气候变暖,受灾面积增加,冷湿效应减弱,生物多样性减少等生态环境问题。
Wetland reclamation in Sanjiang plain has been very obvious in the recent 20 years, which influences human living enviroument. The paper selects Fujin and Tongjiang Gity as examples, extracts the area of wetland and farmland basing on Landsat-5TM images of 1988 and 2006 by RS and GIS and analyzes the effect of wetland reclamation to climate, water, biology diversity and so on. The result indicates that wetland has decreased 291573.8hm^2, while farmland has increased 499109.6 hm^2 and that wetland reclamation has resulted in some ecology environment problems in the research area., such as climate warming up, stricken area increasing, cold-humid effect weakening and biology diversity decreasing and so on.
出处
《农业现代化研究》
CSCD
北大核心
2008年第5期603-606,共4页
Research of Agricultural Modernization
基金
东北农业大学博士科研启动基金"三江平原北部地区湿地农田化过程研究"
东北农业大学创新团队发展计划基金
