本文選題：波狀坡 + 水土流失��； 參考：《水利學報》2017年03期

【摘要】：為解決波狀坡耕地水土流失的治理問題,針對波狀坡耕地的形態(tài)特征及其水土流失特點,設(shè)計了波狀坡耕地攔擋淀排技術(shù),并提出了相關(guān)參數(shù)計算方法。在河北省平泉縣東北溝小流域布設(shè)徑流小區(qū)2個(對照小區(qū)和措施小區(qū))并觀測產(chǎn)流產(chǎn)沙量。3年觀測結(jié)果表明,波狀坡耕地的土壤侵蝕主要是由幾場強降雨引起的,攔擋淀排措施在強降雨情況下的平均減蝕率仍能達到98.37%;通過對次降雨資料分析發(fā)現(xiàn)次降雨量是影響波狀坡耕地侵蝕的重要因子,經(jīng)過攔擋淀排措施對徑流的調(diào)控作用,措施小區(qū)徑流量明顯減少,措施小區(qū)徑流量與次降雨量的相關(guān)性系數(shù)減小;按照野外徑流小區(qū)的實際修建費用估算出攔擋淀排技術(shù)的公頃造價為30075元,僅為北方土石山區(qū)石坎梯田公頃造價的49.60%,具有良好的經(jīng)濟適用性。因此,攔擋淀排技術(shù)能夠有效防治波狀坡耕地水土流失,可作為一項新型坡耕地水土流失防治技術(shù)。
[Abstract]:In order to solve the problem of controlling soil and water loss of wavy sloping farmland, the technology of blocking and retaining deposition of wavy sloping land was designed according to the morphological characteristics and soil erosion characteristics of wavy sloping land, and the calculation method of relevant parameters was put forward. Two runoff plots (control plot and measure plot) were set up in Donggou small watershed of Pingquan County, Hebei Province, and the runoff and sediment yield were observed. The results of 3 years observation show that the soil erosion of wavy sloping farmland is mainly caused by several strong rainfall. Through the analysis of rainfall data, it is found that the secondary rainfall is an important factor affecting the erosion of wavy sloping land. According to the actual construction cost of field runoff plot, the cost of blocking and drainage technology is estimated to be 30075 yuan. It is only 49.60 hectares of the cost of terraces in the northern earth-rock mountain area, which has good economic applicability. Therefore, the technology of blocking and drainage can effectively prevent and control soil and water loss of wavy sloping land, and can be used as a new technology of preventing and controlling soil and water loss of sloping land.
【作者單位】： 中國科學院水利部水土保持研究所;西北農(nóng)林科技大學資源環(huán)境學院;承德市水土保持科學研究所;
【基金】：國家科技支撐計劃課題(2011BAD31B01) 水利部公益性行業(yè)科研專項經(jīng)費項目(201201048)
【分類號】：S157

【參考文獻】

相關(guān)期刊論文 前10條

1 李顯n，

本文編號：1829519