【摘要】：為揭示排土場復(fù)墾區(qū)不同土地利用類型土壤的水源涵養(yǎng)功能,采用野外實地雙環(huán)入滲試驗和室內(nèi)理化分析方法,系統(tǒng)地研究了海州露天煤礦排土場復(fù)墾區(qū)不同土地利用類型(喬木林地、灌木林地、農(nóng)用地、荒草地)土壤入滲特性及其影響因素。結(jié)果表明:不同土地利用類型下的土壤初始入滲率、穩(wěn)定入滲率和累計入滲量均表現(xiàn)為喬木林地灌木林地農(nóng)用地荒草地;不同土地利用類型下土壤入滲過程的擬合優(yōu)度存在差異,G-P綜合模型、Kastiakov模型、Horton模型的平均擬合優(yōu)度依次為0.926,0.908,0.905。G-P綜合模型相對誤差為79.21%~123.69%,更接近排土場復(fù)墾區(qū)土壤入滲的實際過程,可作為排土場復(fù)墾區(qū)土壤入滲過程的預(yù)測模型;不同土地利用類型下土壤初始入滲率與非毛管孔隙度呈顯著正相關(guān),穩(wěn)定入滲率和累計入滲量與非毛管孔隙度、礫石含量和部分根系特征呈顯著正相關(guān);采用主成分分析評價的土壤入滲能力排序為喬木林地灌木林地農(nóng)用地荒草地,初始入滲率、穩(wěn)定入滲率、14min入滲率和累積入滲量的主成分方差累積貢獻(xiàn)率為99.047%,較好地表達(dá)了土壤入滲能力。
[Abstract]:In order to reveal the water conservation function of the soils of different land use types in the reclamation area, the field double-loop infiltration test and indoor physical and chemical analysis method were used. Soil infiltration characteristics and influencing factors of different land use types (Arbor forest, shrub forest, agricultural land, wasteland) in reclamation area of Haizhou opencast coal mine dump were systematically studied in this paper. The results showed that the initial infiltration rate, stable infiltration rate and cumulative infiltration amount of soil under different land use types were as follows: Arbor woodland, shrub forest land, agricultural land wasteland; The goodness of fit of soil infiltration process was different under different land use types. Gp comprehensive model and Kastiakov model were used to analyze the relationship between soil infiltration and soil infiltration. The average goodness-of-fit of Horton model was 0.926, 0.908, and the relative error of 0.905. The integrated model was 79.21% and 123.69% respectively, which was closer to the actual process of soil infiltration in the reclamation area of the waste yard, and the relative error of the integrated model was 79.21% and 123.69%, respectively. It can be used as the prediction model of soil infiltration process in the reclamation area of waste yard. Soil initial infiltration rate was positively correlated with non-capillary porosity under different land use types, while stable infiltration rate and cumulative infiltration rate were positively correlated with non-capillary porosity, gravel content and part of root system characteristics. The order of soil infiltration capacity evaluated by principal component analysis was as follows: Arbor woodland, shrub land, farmland wasteland, initial infiltration rate, stable infiltration rate, 14min infiltration rate and cumulative infiltration rate, the cumulative contribution rate of principal component variance was 99.047%. The soil infiltration ability was well expressed.
【作者單位】： 遼寧工程技術(shù)大學(xué)環(huán)境科學(xué)與工程學(xué)院;
【基金】：國家自然科學(xué)基金項目(51474119)
【分類號】：S152.7;S714

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