摘要
根据1986年、1996年和2001年土地覆被数据,运用ARC/INFO软件,研究了黄河缓冲带的土地覆被格局变化,分析了黄河的影响程度与范围。结果表明:(1)在空间上,各缓冲区随着距河岸距离的增大土地利用程度综合指数呈现先增加后减小的趋势,两者之间可用抛物线模型模拟。(2)在时间上,从1986年到1996年,除了在0.5km缓冲区土地利用程度综合指数增加外,其他缓冲区土地利用程度综合指数均减少;从1996年到2001年和从1986年到2001年,各缓冲区土地利用程度综合指数均增加,黄河对土地利用的影响范围超过6km。
Regional land use / land cover change is one of the important parts of global change. The objective of this research was to identify land use pattern change （LUPC） in the Yellow River buffer zone（6 km）. LUPC of the river buffer zone in the past 15 years was investigated through land use/land cover classification of three sets of Landsat TM images acquired on June 5th, 1986, May 30th ,1996 and May 4th, 2001,respectively. Nine land cover types were recognized, including water areas, Phragmites, woodland, cultivation land, Tamarix chinensis- Phragmites, construction land, Tamarix chinensis, Suarda heteroptera Aeluropus littoralis Var. Sinensis Tamarix chinensis, mud flat. Based on digital land cover maps of 1986, 1996, 2001, the land use pattem change （LUPC） was studied, at macro-scale, employing ARC/INFO software. The conclusions were follows： （1） In space land use degree comprehensive index （Y） increased with distance to the Yellow River （X） in 1986, 1996 and 2001, and both had the parabola relationship： y86=-0.2189x^2 ＋ 3.5454x ＋ 228.62, r=-0.898^＊＊ ;y96 =-0.1369x^2 ＋ 2.6539x ＋ 228.01 ,r=0.9988^＊＊ ;y01=-0.125x^2 ＋ 2.1695x ＋ 250.38 , r=0.9680^＊＊. （2） In time land degree comprehensive index decreased except 0.5 km from 1986 to 1996, while it increased from 1996 to 2001, from 1986 to 2001. The influencing range of The Yellow River is over 6 km.
出处
《农业环境科学学报》
CAS
CSCD
北大核心
2005年第4期757-760,共4页
Journal of Agro-Environment Science
基金
国家自然科学基金项目40171037
关键词
土地覆被
土地利用程度综合指数
黄河
land coverage
land degree comprehensive index
the Yellow River
