[1]郝李霞,程先富,张广胜.安徽省岳西县土壤侵蚀时空演变特征及趋势预测[J].水土保持研究,2011,18(01):31-36.
　HAO Li-xia,CHENG Xian-fu,ZHANG Guang-sheng.Study on Spatial and Temporal Changes of Soil Erosion in Yuexi County, Anhui Province[J].Research of Soil and Water Conservation,2011,18(01):31-36.
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安徽省岳西县土壤侵蚀时空演变特征及趋势预测

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 18 期数: 2011年01期 页码: 31-36 栏目: 出版日期: 2011-02-20
Title:
Study on Spatial and Temporal Changes of Soil Erosion in Yuexi County, Anhui Province
作者:
郝李霞1, 程先富2, 张广胜1
1. 皖西学院 资源环境与旅游管理学院, 安徽 六安 237012;
2. 安徽师范大学 国土资源与旅游学院, 安徽 芜湖 241000
Author(s):
HAO Li-xia1, CHENG Xian-fu2, ZHANG Guang-sheng1
1. Resource Environment and Tourism Management College, West Anhui University, Lu’an, Anhui 237012, China;
2. College of Territorial Resources and Tourism, Anhui Normal University, Wuhu, Anhui 241000, China
关键词:
土壤侵蚀; 时空演变; 马尔柯夫模型; 岳西县
Keywords:
soil erosion; spatial and temporal changes; Markov model; Yuexi county
分类号:
S157.1
摘要:
利用ArcView 3.3软件，对岳西县1958年、1983年、1992年的土壤侵蚀动态监测图进行屏幕数字化，得到三期土壤侵蚀强度矢量图；利用2004年TM影像，通过目视解译的方法，得到2004年土壤侵蚀强度矢量图。利用ArcGIS软件，对不同时段土壤侵蚀图进行叠加分析，研究了不同时段不同土壤侵蚀强度面积数量的相互转化及土壤侵蚀程度的变化；运用马尔柯夫模型，预测岳西县土壤侵蚀动态演变趋势。主要结论如下：（1）岳西县土壤侵蚀状况1958-2004年经历了急剧恶化到逐渐恢复的过程。1958-1983年土壤侵蚀不断加剧；1983-1992年土壤侵蚀逐渐恢复；1992-2004年土壤侵蚀进入全面恢复期。（2）相邻时段的土壤侵蚀图叠加结果分析表明，不同时期土壤侵蚀各等级是相互转化的。（3）1958-2004年岳西县土壤侵蚀程度无变化的面积经历了先下降后上升的过程，土壤侵蚀程度等级增加的面积先显著扩大再逐步下降，而土壤侵蚀程度等级下降的面积先减少后增加。（4）马尔柯夫模型预测结果表明，到2016年微度侵蚀土壤面积增加到64 221 hm2，中度侵蚀类型面积明显下降；强烈侵蚀与极强烈侵蚀土壤在局部地区有所增加，但这种变化不明显。堆积类型面积呈显著下降趋势，水域面积有所减少。从总体趋势看土壤侵蚀状况向良性循环方向发展。
Abstract:
Soil erosion data at four selected temporal periods,i.e, soil erosion intensity maps of 1958, 1983, 1992 and Landsat TM of 2004.Soil erosion intensity maps of 2004 is interpreted from TM imagery. Making use of the ArcGIS software, soil erosion intensity maps at different periods are served as overlay analysis. In order to analyze area conversion of soil erosion intensity at different periods and changes of soil erosion degree. Based on Markov model, dynamic evolution of soil erosion is forecasted in Yuexi county. Main conclusions are as follows:(1)Soil erosion status in Yuexi county had experienced stages of rapid deterionration to gradual recovery from 1958 to 2004.Soil erosion had aggravated continually from 1958 to 1983.Intense soil erosion had taken place and water area had decreased.Soil erosion status was restoring gradually from 1983 to 1992.Intense soil erosion disappeared.Soil erosion was to be in the recovery stage from 1992 to 2004.Ecological environment was clearly better.(2)Different types of soil erosion were mutually transformational at different times.(3)Unchanged area of soil erosion degree had experienced descending to ascenting in Yuexi county from 1958 to 2004. Increasing area of level of soil erosion degree enlarged observably after that it descended gradually, and yet descending area of level of soil erosion degree declined and then climbed up.(4)Predicting results basing on Markov model shows that soil area of slightly erosion shall be increasing to 64 221 hm2 if current soil erosion status goes on maintaining at the end of 2016,and that soil area of midderate erosion will be descending,soil area of serious erosion will be increasing in local area but its changes are unconspicuous.Soil area of deposition type shall be descending eminently and waters area shall be diminishing.Soil erosion status will be tending toward better on the whole.

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备注/Memo

收稿日期:2010-5-30;改回日期:2010-8-28。
基金项目:安徽省人文地理学重点学科基金
作者简介:郝李霞（1976- ），女，安徽潜山人，硕士，主要研究方向：资源遥感与土地利用。E-mail：hlx0318@126.com

更新日期/Last Update: 1900-01-01