基于RS和GIS的小型城市土地利用动态分析--以杨凌示范区为例
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西北农林科技大学校科研专项基金(04ZM100)


Dynamic Analysis of Landuses Based on RS Technology in Yangling Demonstration Zone
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    摘要:

    根据1986年,1995年和2003年3期TM遥感影像,利用遥感技术和地理信息系统空间分析方法,研究了1986-2003年间杨凌示范区的土地利用动态变化情况。分析结果显示:(1)在1986-2003年间,耕地面积逐年下降,17 a间下降了20 km2多。1986年,1995年及2003年耕地分别占总土地面积的74%,59.7%和50.8%;而园地面积增加幅度最大,增加了近12 km2,年变化率近10%;林地和交通用地也有了明显的增加,增长幅度分别为7.4%,7.1%;此外,居民点用地也有明显增加。(2)杨凌在1986-1995年间,居民点用地几乎没有变化,而1995-2003年间居民点用地有了大幅度的增加。另外,2003年交通用地比1995年在总土地面积中所占的比例增加了1.6%,这充分说明了杨凌的城市化步伐不断加快。

    Abstract:

    Dynamic change of landuses in Yangling Demonstration Zone from 1986 to 2003 were analyzed by using the spatial methods of RS and GIS and comparing the changes of TM remote sensing images in the years of 1986,1995 and 2003.Results show that from 1986 to 2003,the area of cultivated land gradually decreased by more than 20 km2.The percentages of cultivated land over the total area in 1986,1995 and 2003 were 74%,59.7% and 50.8%,respectively.However,the increase in the area for horticulture was the greatest,being nearly 12 km2,and the annual changing rate was almost 10%.The areas of forest land and transportation increased by 7.2% and 7.0%,respectively.Besides,inhabitant area increased considerably in the past.From 1986 to 1995,there was nearly no change in inhabitant area,but from 1995 to 2003,however,there was a significant increase in it.In addition,the proportion of transportation area to the total land in 2003 was 1.6% higher than that in 1995,indicating a faster increase in the second period.It has fully proved that the pace of urbanization in Yangling is accelerated constantly.

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刘梦云,李宝宏,王锐.基于RS和GIS的小型城市土地利用动态分析--以杨凌示范区为例[J].水土保持通报,2007,(1):34-38

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  • 收稿日期:2005-12-08
  • 最后修改日期:2006-05-29
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  • 在线发布日期: 2014-11-26
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