欢迎来到天天文库
浏览记录
ID:52690555
大小:190.31 KB
页数:4页
时间:2020-03-29
《不同水土保持措施下径流小区降雨与产流产沙关系研究_王.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第18卷第5期水土保持研究Vol.18,No.52011年10月ResearchofSoilandWaterConservationOct.,2011不同水土保持措施下径流小区降雨与产流产沙关系研究王海斌(陕西省水土保持勘测规划研究所,西安710004)摘要:冀北山区生态环境脆弱,水土流失严重,因此在该区域开展水土保持研究非常有必要。通过在河北滦平县平坊小流域布设荒草地、山杏、刺槐、油松4种径流小区,并分析了2004-2005年降雨、小区产流量、产沙量、入渗率变化。结果表明:该区次降雨多为小雨和中雨,次降雨强度
2、主要集中在<10mm/h范围内;4种小区中产流产沙总量大小为:荒草地小区>山杏小区>刺槐小区>油松小区,且相同降雨条件下,荒草地产流产沙量明显高于其它3种小区,4种小区平均入渗率依次为65.07%,88.36%,90.16%,90.03%。说明鱼鳞坑整地,然后种植山杏、刺槐、油松等措施能够有效拦蓄径流泥沙。关键词:水土保持措施;降雨特征;径流;产沙量;入渗率中图分类号:S157.1文献标识码:A文章编号:1005-3409(2011)05-0063-04StudyontheRelationsbetweenCha
3、ractersandSedimentYieldandRunofffromPlotswithDifferentSoilandWaterConservationMeasuresWANGHai-bin(SurveyingandPlanningInstituteofSoilandWaterConservationofShaanxiProvince,Xi’an710004,China)Abstract:Itisverynecessarytodotheresearchonsoilandwaterconservationfo
4、rthefragileenvironmentandserioussoillossinthenorthernpartofHebeiProvince.Inthispaper,fourrunoffplotswhichwerelocatedontheslopewithwildgrasses,wildapricotslope,RobiniapseudoacaciaslopeandPinustabuliformisslope,weresetinthePingfangsmallwatershedofLuanpingCount
5、y,HebeiProvince.Therainfallandtheamountofrunoff,sedimentyieldandseepingratesofthefourrunoffplotswereanalyzedin2004and2005.There-sultsshowthattherainfallsaremainlylightrainandmoderaterain,andtherainfallintensitiesaremainlywiththeupperboundof10mm/h.Therelation
6、shipofthefourrunoffplots’totalamountsofrunoffandsed-imentyieldareinorderofwaste-grassslope>wildapricotslope>Robiniapseudoacaciaslope>Pinustabuli-formisslope.Andwecanalsofindthatthewaste-grassslopeplots’amountsofrunoffandsedimentyieldingareobviouslyhigherthan
7、theothers.Theaverageseepingratesofthewaste-grassslopeplot,wildapricotslopeplot,RobiniapseudoacaciaslopeplotandPinustabuliformisslopeplotare65.07%,88.36%,90.16%,90.03%,respectively.Theresearchprovethatthesoilandwaterconservationmeasuresofdiggingsiltpitsonthes
8、lopeandthenplantingwildapricot,RobiniapseudoacaciaandPinustabuliformisareeffective.Keywords:soilandwaterconservationmeasure;rainfallcharacter;runoff;sedimentyield;seepingrate北方土石山区主要包括海河流域和淮河流域,
此文档下载收益归作者所有