辽宁铁岭市土壤侵蚀时空演变研究  

Temporal and spatial evolution of soil erosion in Tieling City,Liaoning province

作　　者：王燕[1] 姚玉增[1] 巩恩普[1] 姚志宏[1] 

机构地区：[1]东北大学资源与土木工程学院,辽宁沈阳110004

出　　处：《中国地质灾害与防治学报》2008年第3期144-147,共4页The Chinese Journal of Geological Hazard and Control

基　　金：辽宁省自然科学基金项目(20052030)

摘　　要：近年来,人为活动的加剧造成铁岭地区水土流失日益严重。本文采用遥感和GIS技术,以部颁标准SL190-96对铁岭地区1991年和2001年的土壤侵蚀情况进行研究,并结合1986年和1996年的土壤侵蚀调查数据,分析了铁岭地区近15年来土壤侵蚀强度的时空变化,结果表明铁岭地区在此期间土壤侵蚀面积缓慢增长,其中强度侵蚀面积在1986~1996年间持续增长,2001年明显下降;中度侵蚀面积在1986~1996年间持续下降,2001年则明显增强;空间分析显示明显恶化的区域有西丰、开原和清河区,具明显改善的为铁岭县,而昌图和调兵山地区基本保持稳定。今后该区水保的重点应放在强度侵蚀的治理,以及土壤侵蚀等级增强的区域。In recent years, the increase of human activities has led to the strong water and soil loss in Tieling Region. In this paper, researches on soil erosion of Tieling region in 1991 and 2001 are carried out using RS and GIS method and also the standard SL190 - 96 issued by China Ministry of Water Resources, and their temporal and spatial evolution in recent 15 years are analyzed combining with the data of soil erosion in 1986 and 1996. The result indicates that the overall erosion area is gradually increased during this period, and the intensive erosion increased from 1986 to 11996, and decreased in 2001; while the intermediate erosion decreased from 1986 to 1996, and increased in 2001. The spatial analysis shows that the obviously deteriorative regions include Xifeng, Kaiyuan and Qinghe districts, while Tieling county is obviously ameliorative, and Changping and Diaobingshan are nearly unchanged. The future conservation of soil and water should be focused on the harnessing of intensive erosion and the region whose erosion degree was gradually increased.

关 键 词：土壤侵蚀 遥感 地理信息 时空演化 铁岭 辽宁省铁岭 

分 类 号：P642.2[天文地球—工程地质学]