自然资源学报

自然资源学报 ›› 1998, Vol. 13 ›› Issue (1): 92-96.doi: 10.11849/zrzyxb.1998.01.017

• 论文 • 上一篇    

我国耕地面积重心及耕地生态背景质量的动态变化

高志强, 刘纪远, 庄大方   

  1. 中国科学院遥感应用研究所
  • 收稿日期:1997-05-22 修回日期:1997-09-08 出版日期:1998-03-25 发布日期:1998-03-25
  • 作者简介:高志强,男,1966年3月生,中国科学院遥感应用研究所在读博士。从事过多项遥感和GIS的应用和研究 工作,为《中国资源环境遥感宏观调查与动态研究》专著的编委和执行编委,现正从事着国家科委“九五”国家 重中之重“3S”第一课题的研究任务。

THE DYNAMIC CHANGES OF THE GRAVITY CENTER OF THE FARMLAND AREA AND THE QUALITY OF THE FARMLAND ECOLOGICAL BACKGROUND IN CHINA

GAO Zhiqiang, LIU Jiyuan, ZHUANG Dafang   

  1. Institute of Remote Sensing Applications,Chinese Academy of Sciences,Beijing 100101
  • Received:1997-05-22 Revised:1997-09-08 Online:1998-03-25 Published:1998-03-25

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210 | 4

摘要： 基于中国环境资源数据库及对中国耕地面积１０年变化研究的基础，采用重心模型方法，通过计算两个时期的耕地面积重心，得出中国耕地面积重心１０年向西北移动了２８．３３７７ｋｍ，尔后，在耕地生态背景质量模糊评价的基础上，生成耕地生态背景质量指数，利用此指数计算出耕地重心的移动所导致的中国耕地质量下降２．５２％的定量化数值。

关键词: 耕地面积重心, 耕地生态背景质量指数

Abstract: According to the data base of Chinese environment resources,on the basis of the reearches on the changes of the Chinese farmland area in 10 years,the gravity centers of the farmland areas of two periods are calculated by using the method of the gravity center model. From this it is found that the gravity center of the Chinese farmland has moved 28 337 7km toward the northwest in 10 years. Then,on the basis of the fuzzy evaluation of the farmland ecological background,the quality index of the farmland ecological background is designed. By using this index the quantitative value of the decline of the Chinese farmland quality is calculated. The value is 2.52%,which is induced by the movement of the gravity center of the farmland.

Key words: gravity center of the farmland area, quality index of the farmland ecologi cal background