| 松嫩平原近20年土壤盐渍化动态变化及驱动力分析 |
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| 引用本文： | 张哲寰,马宏伟,刘强,朱巍,张廷秀.松嫩平原近20年土壤盐渍化动态变化及驱动力分析[J].地质与资源,2007,16(2):120-124. |
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| 作者姓名： | 张哲寰 马宏伟 刘强 朱巍 张廷秀 |
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| 作者单位： | 1. 沈阳地质矿产研究所, 辽宁 沈阳 110033;2. 吉林省地质调查院, 吉林 长春 130061 |
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| 基金项目： | 中国地质调查局区域地质调查项目 |
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| 摘 要： | 利用1986年（TM）和2001年（ETM）卫星遥感影像数据和RS-GIS集成技术，对松嫩平原盐渍化土地的现状、程度和发展趋势进行了量化分析.结果表明，这15年中，松嫩平原盐碱地面积增加了21.7112×104 hm2，每年增加1.45×104 hm2，年平均增长率为1.4%.其中轻度盐渍化土地增加8812 hm2，年平均增长0.16%；中度盐渍化土地增加3.8306×104 hm2，年平均增长0.64%；重度盐渍化土地面积增加了16.9994×104 hm2，年平均增长了4.2%.气候变暖，降水减少，人为活动增强是盐渍化程度加重的主要驱动力.
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| 关 键 词： | 土壤盐渍化 动态变化 松嫩平原 |
| 文章编号： | 1671-1947（2007）02-0120-05 |
| 收稿时间： | 2007-01-19 |
| 修稿时间： | 2007-01-192007-02-20 |
DEVELOPMENT AND DRIVES OF LAND SALINIZATION IN SONGNEN PLAIN |
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| ZHANG Zhe-huan,MA Hong-wei,LIU Qiang,ZHU Wei,ZHANG Ting-xiu.DEVELOPMENT AND DRIVES OF LAND SALINIZATION IN SONGNEN PLAIN[J].Geology and Resources,2007,16(2):120-124. |
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| Authors: | ZHANG Zhe-huan MA Hong-wei LIU Qiang ZHU Wei ZHANG Ting-xiu |
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| Institution: | 1. Shenyang Institute of Geology and Mineral Resources, Shenyang 110033, China;2. Jilin Institute of Geological Survey, Changchun 130061, China |
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| Abstract: | Landsat TM (ETM) images acquired in 1986 and 2001 and the RS-GIS integrated technique are adopted to quantitatively analyze the present situation,degrees and developing trend of salinized-alkalized land in Songnen plain. It is concluded that,during the 15 years,the area of salinized land has increased 21.7112× 104 hm2,averagety 1.45× 104 hm2 per annum,with average annual increase rate of 1.4% . Among them,the salinized areas in light-degree,mediate-degree and heavy-degree have increased respectively by 0.8812× 104 hm2,3.8306× 104 hm2 and 16.9994× 104 hm2,with average annual increase rate of 0.16% ,0.64% and 4.2% respectively. The main drives for the increase of salinization are the warming climate,reduced precipitation and increased human activities. |
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| Keywords: | land salinization developing trend Songnen plain |
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