Jibieke·Halikebayi,DING Jian-li,Xielizat·Habu.Analysis on Tempo-spatial Dynamic Change and Driving Factors on Soil Salinification in Arid Area[J].Research of Soil and Water Conservation,2011,18(04):112-116.
干旱区土地盐渍化时空动态变化及影响因子分析
- Title:
- Analysis on Tempo-spatial Dynamic Change and Driving Factors on Soil Salinification in Arid Area
- Keywords:
- dynamic change; solidification; salinity index; causing analysis
- 分类号:
- S155.2+93
- 摘要:
- 土壤是人类社会及一切社会活动的基本条件，而土壤盐渍化是土壤退化和土壤荒漠化的重要类型之一，是当今干旱区发展中面临的重要问题之一，也是影响干旱半干旱区农业生产的第一障碍性问题。土壤盐渍化时空动态变化研究是发展土壤监测研究及估算方法的重要基础工作。因此盐渍化治理工作的好坏也成了人们关注的问题。文章以新疆塔里木盆地北缘渭干河-库车河三角洲绿洲为研究区，采用1989年9月25日及2001年8月1日的遥感影像，通过计算盐分指数，得到盐分指数图像，进一步将盐分指数图像参与其它波段进行分类，通过统计分析，研究了渭干河-库车河三角洲盐渍地动态变化状况和变化趋势，并对变化影响因素进行了分析。结果表明：非盐渍地有所减少，轻、微盐渍地有所扩大，年均扩大率3.37%，中度盐渍地和重度盐渍地都相应减少，而中度盐渍地减少较多，年均减少率分别为1.96%和1.09%；盐渍地时空变化是同时受自然和人文因素影响的复杂过程，其中人为因素的影响最大。虽然盐渍化治理工作取得了一定的成就，但干旱区盐渍化防治工作需要进一步努力和加强。
- Abstract:
- The soil is main conditions of human society as well as these activities. Soil salinification is one of the important types of soil degradation and deserted land. It is one of serious issues in the development of arid Area, which seriously affects the agricultural production and development. Study on soil moisture dynamic variation is the base for soil surveying system and development of estimation methods. How to deal with this issue is one of the most emergency problems to be settled. Therefore, the quality of maintenance of soil solidification work has become one of the most matters concerned around the world. This paper used the TM image acquired in September 25, 1989 and ETM image acquired in August 1, 2001, and calculated the reflectance of the third waveband and the fourth waveband. And then compute their salinity indices (salinity index, SI). And the soil salinity type was classified based on the combination all the waveband of the image and the salinity index image. The result suggested that in Wei-Gan River and Ku-Che river delta, non-salinity land had decreased, the slight-salinity land had increased by 3.37% per year, the middling-salinity land had decreased 1.96% per year, and the high-salinity land had decreased 1.09% per year;temporal and spatial variation of soil salinification is a very complex process and it is was caused by both natural factors and human factors, but the most correlated factors with soil salinification is the role of human factors. Through the statistical analysis, it indicated that we had achieved some achievement in governing soil salinification, but in order to cut the throat of soil salinity land in Wei-Gan River and Ku-Che river delta, we should take more time to do more work.
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备注/Memo
收稿日期:2010-4-9;改回日期:2010-11-24。
基金项目:国家自然科学基金项目（40861020，40961008）；霍英东教育基金项目（121018）；测绘遥感信息工程国家重点实验室开放基金（09R03）；教育部科学研究重点项目以及新疆自然科学基金项目（200821128）
作者简介:吉别克#哈力克巴义（1985- ），女，新疆乌鲁木齐人，硕士，主要从事干旱区资源环境及遥感应用研究。E-mail：jibick@sina.com
通讯作者:丁建丽（1974- ），男，山东人，教授，博士，研究方向：资源遥感与3S技术应用。E-mail：watarid@xju.edu.cn