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.
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.
ZHANG Zhe-huan, MA Hong-wei, LIU Qiang, ZHU Wei, ZHANG Ting-xiu. DEVELOPMENT AND DRIVES OF LAND SALINIZATION IN SONGNEN PLAIN. GEOLOGY AND RESOURCES, 2007, 16(2): 120-124.
2007, Vol. 16 
辽公网安备 21010502000112号