收藏本站
《Proceedings of Symposium from Cross-strait Environment & Resources and 2nd Representative Conference of Chinese Environmental Resources & Ecological Conservation Society》 2010年
收藏 | 手机打开
二维码
手机客户端打开本文

Ecological Prediction Model of Soil Erosion in Small Watershed Based on GIS

【摘要】:正In current china,the research on comprehensive control of soil and water losses in small watershed using GIS is an important research direction in which soil erosion prediction provides significant foundation. Based on the softwares of ArcGIS 8.3 and Mapinfo 7.0 and combined with ecological principles,the objectives of this paper were to obtain erosion modulus by field rainfall experiments in various ecological terrain units,and to predict soil loss in the whole small watershed.According to watershed water concentration principle, combinatorics principle,and weights analysis of environmental factors,which affect soil erosion of each ecological unit,we constructed the soil erosion prediction model.Then by performing rainfall simulation in Liudaogou small watershed,we simulated the model.The following results were found:(1) Soil water erosion mainly occurs on the wasteland and Sparse Shrub and grassland with the slope of 15°~25°,and is not whole small watershed.On the slope sections of the severest soil water erosion,the soil erosion modulus are over 15000 t/km~2a。On the others slope sections,the soil erosion modulus are much smaller(2) Under the same situation,the greater rainfall intensity is,the greater erosion modulus is;(3)On sandy slope,once producing runoff,the sediment concentration would be large,and the formation process of gully is vertical seepage—slope undercurrent—landslip.(4) The soil erosion ecological prediction model can reflect the spatial difference of soil water erosion more accurately.And it is more advantageous over RUSLE and WEEP in the Loess plateau with steep slope,small terrain plot and frequent rainstorm

知网文化
【相似文献】
中国重要会议论文全文数据库 前10条
1 ;Vertical Change of the Soil Erosion and its Controlling Factors from 1986 to 2005 in Linyi Country,China[A];Proceedings of Symposium from Cross-strait Environment & Resources and 2nd Representative Conference of Chinese Environmental Resources & Ecological Conservation Society[C];2010年
2 ;Soil Erosion in the Black Soil Region of Northeast China[A];Proceedings of Symposium from Cross-strait Environment & Resources and 2nd Representative Conference of Chinese Environmental Resources & Ecological Conservation Society[C];2010年
3 ;The Study of YiHe Basin on Soil Erosion Simulation Using WATEM/SEDEM Model[A];Proceedings of Symposium from Cross-strait Environment & Resources and 2nd Representative Conference of Chinese Environmental Resources & Ecological Conservation Society[C];2010年
4 ;Effects of Slopes and Rainfalls on Soil Organic Carbon under Water Erosion in Regions of Hilly Purple Soil[A];Proceedings of Symposium from Cross-strait Environment & Resources and 2nd Representative Conference of Chinese Environmental Resources & Ecological Conservation Society[C];2010年
5 ;Erosion Development of Gully System in Loess Residual Upland Gully Region[A];Proceedings of Symposium from Cross-strait Environment & Resources and 2nd Representative Conference of Chinese Environmental Resources & Ecological Conservation Society[C];2010年
6 ;Ecological Prediction Model of Soil Erosion in Small Watershed Based on GIS[A];Proceedings of Symposium from Cross-strait Environment & Resources and 2nd Representative Conference of Chinese Environmental Resources & Ecological Conservation Society[C];2010年
7 ;Summary of the Application of "3S" Techniques in Monitoring Soil Erosion[A];Proceedings of Symposium from Cross-strait Environment & Resources and 2nd Representative Conference of Chinese Environmental Resources & Ecological Conservation Society[C];2010年
8 ;Control of Erosion of Safe Basins in a Helmholtz Oscillator via Delayed Velocity Feedbacks[A];第十三届全国非线性振动暨第十届全国非线性动力学和运动稳定性学术会议摘要集[C];2011年
9 ;Responses of Rain Splash Erosion and Soil Crust Development to Particle Size[A];Proceedings of Symposium from Cross-strait Environment & Resources and 2nd Representative Conference of Chinese Environmental Resources & Ecological Conservation Society[C];2010年
10 ;The Study of Dynamic Change of Soil Erosion Intensity in Yimeng Mountain Area Based on RS & GIS[A];Proceedings of Symposium from Cross-strait Environment & Resources and 2nd Representative Conference of Chinese Environmental Resources & Ecological Conservation Society[C];2010年
中国博士学位论文全文数据库 前10条
1 蒙仲举;荒漠草原坡面侵蚀分异规律及防控措施研究[D];内蒙古农业大学;2010年
2 李璐;南水北调中线水源区多尺度生态环境综合评价[D];华中农业大学;2010年
3 Ngu War Nwe;中国北方传统农业收获块根作物对土壤流失的影响[D];中国农业科学院;2012年
4 陈三雄;广东大宝山矿区水土流失特征及重金属耐性植物筛选[D];南京林业大学;2012年
5 林杰;基于植被结构特征的土壤侵蚀遥感定量反演[D];南京林业大学;2011年
6 丁晓东;农田养分流失风险评价及养分平衡管理研究[D];浙江大学;2010年
7 王尧;喀斯特地区土壤侵蚀模拟研究[D];北京大学;2011年
8 马栋和;黄土公路边坡坡面冲刷的水—土力学耦合机制及模型研究[D];吉林大学;2012年
9 陈廷方;西部山区道路工程与环境的相互影响机制及其评价[D];西南交通大学;2009年
10 魏兴萍;岩溶槽谷区水土流失特征及机理研究[D];西南大学;2011年
中国硕士学位论文全文数据库 前10条
1 王友胜;淮河流域黄泛区风水侵蚀格局及其驱动因子研究[D];山东农业大学;2012年
2 康锦辉;黄土洞穴物理潜蚀机理试验研究[D];长安大学;2010年
3 胡辉;用人工降雨法进行扰动高沙土侵蚀规律的研究[D];南京林业大学;2011年
4 姬翠翠;基于遥感和GIS的三北地区水土流失动态监测研究[D];辽宁工程技术大学;2009年
5 刘丹丹;干旱河谷颗粒侵蚀及其治理研究[D];清华大学;2010年
6 林容;辽西黄土边坡坡面冲刷破坏试验研究[D];吉林大学;2011年
7 王振;青海省黄土丘陵沟壑区沟壑侵蚀状况研究[D];陕西科技大学;2012年
8 张媛静;基于能量分析的不同类型土壤抗侵蚀特征研究[D];长江科学院;2010年
9 刘窑军;道路边坡不同生态防护措施侵蚀特征研究[D];华中农业大学;2011年
10 冯军辉;基于GIS平台汶川震后新生水土流失分布特征研究[D];西南大学;2012年
中国知网广告投放
 快捷付款方式  订购知网充值卡  订购热线  帮助中心
  • 400-819-9993
  • 010-62982499
  • 010-62783978