自然资源学报

自然资源学报 ›› 2011, Vol. 26 ›› Issue (2): 310-318.doi: 10.11849/zrzyxb.2011.02.014

• 资源评价 • 上一篇    下一篇

基于遥感和GIS的黄河三角洲盐化土地动态及其驱动力分析

李百红1a, 赵庚星1a, 董超1b, 秦元伟2   

  1. 1. 山东农业大学 a.资源与环境学院, b.信息科学与工程学院,山东 泰安 271018;
    2. 中国科学院 地理科学与资源研究所,北京 100101
  • 收稿日期:2010-06-30 修回日期:2010-09-21 出版日期:2011-02-20 发布日期:2011-02-20
  • 通讯作者: 赵庚星(1964- ),男,山东垦利人,教授,博士生导师,从事土地(土壤)资源与信息技术研究。E-mail:zhaogx@sdau.edu.cn E-mail:zhaogx@sdau.edu.cn
  • 作者简介:李百红(1985- ),女,山东青州人,硕士生,从事资源遥感方面的研究。E-mail:bhlkey@163.com
  • 基金资助:

    国家级星火计划重点项目(2007EA740002)。

Dynamic and Driving Force Analysis of Salinized Land in the Yellow River Delta Based on RS and GIS

LI Bai-hong1a, ZHAO Geng-xing1a, DONG Chao1b, QIN Yuan-wei2   

  1. 1. a. College of Resources and Environment, b. College of Information Science and Engineering, Shandong Agricultural University, Tai’an 271018, China;
    2. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China
  • Received:2010-06-30 Revised:2010-09-21 Online:2011-02-20 Published:2011-02-20

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58 | 8

摘要： 基于黄河三角洲3期遥感影像,以垦利县为研究区,综合运用RS与GIS技术,通过构建土地盐化指数、土地盐化综合指数、土地变化驱动力重心与向量模型等,对研究区1987—2007年的盐化土地动态及其驱动力进行定量分析。研究结果显示:垦利县的土地盐化程度呈现了重—轻—重的变化趋势,区域内盐化程度由沿海向内陆依次递减;且以黄河为轴线对称分布,黄河沿岸以及地势较高的西南部盐化程度较低。重度盐化土地先减后增;中度持续减少,轻度则是先增后减。海洋和黄河相互作用影响着垦利县的水盐运动,是该区土地盐化动态的内在驱动,而人类活动的影响以土地利用类型转化的形式表现,是土地盐化动态的外在驱动力。研究为区域盐化地治理和农业可持续发展提供了科学依据,对黄河三角洲土地资源的可持续利用有积极的理论和现实意义。

关键词: 黄河三角洲, 盐化土地, 遥感, GIS, 综合盐化指数

Abstract: The salinized land in the Yellow River Delta is serious with large area, which restricts the sustainable development of regional agriculture. In this paper, based on RS and GIS technology, selecting three Landsat TM multi-spectral images of Kenli County in the Yellow River Delta, an index model and a comprehensive index model of land salinization, barycenter and vector model of land-change driving forces were established. Land salinization information, its dynamic changes and driving forces from 1987 to 2007 were analyzed in the study area. The results showed that the comprehensive index of land salinization in Kenli County was 24.10, 26.38 and 24.87 in 1987, 1998 and 2007 respectively, presenting a heavy-light-heavy trend. The salinization degree was decreased progressively from coastal areas to inland, and it was also distributed symmetrically taking the Yellow River as the axis. The longshore of the Yellow River and the southwest area were less salinized. From 1987 to 1998 the annual growth rate in area of severe, moderate and mild salinized land was -0.24%, -1.75% and 1.23%, respectively, while that was 0.47%, -0.60% and -0.79% from 1998 to 2007, which showed that the area of severe salinized land decreased first and then increased, while the area of mild salinized land increased first and then decreased, and the area of moderate salinized land decreased persistently. The mutual action of the ocean and the Yellow River affected the water-salt movement, which was the internal driving factors of land salinization dynamic changes, and the effects of human activities expressed by conversion of land use types were the external driving forces. This study provided a scientific basis for regional saline control and sustainable agricultural development, and it had a positive theoretical and practical significance for the sustainable utilization of land resources in the Yellow River Delta.

Key words: Yellow River Delta, salinized land, remote sensing, GIS, comprehensive salinization index

中图分类号: 

  • S127