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Impact of agro-environmental systems on soil erosion processes and soil properties on hilly landscape in Western Lithuania
Journal of Environmental Engineering and Landscape Management ( IF 1.3 ) Pub Date : 2016-03-24 , DOI: 10.3846/16486897.2015.1054289
Gintaras JARAŠIŪNAS 1 , Irena KINDERIENĖ 1
Affiliation  

The objective of this study was to evaluate the impact of different land use systems on soil erosion rates, sur- face evolution processes and physico-chemical properties on a moraine hilly topography in Lithuania. The soil of the experimental site is Bathihypogleyi – Eutric Albeluvisols (ABe–gld–w) whose texture is a sandy loam. After a 27-year use of different land conservation systems, three critical slope segments (slightly eroded, active erosion and accumula- tion) were formed. Soil physical properties of the soil texture and particle sizes distribution were examined. Chemical properties analysed for were soil pH, available phosphorus (P) and potassium (K), soil organic carbon (SOC) and to- tal nitrogen (N). We estimated the variation in thickness of the soil Ap horizon and soil physico-chemical properties prone to a sustained erosion process. During the study period (2010–2012) water erosion occurred under the grain– grass and grass–grain crop rotations, at rates of 1.38 and 0.11 m3 ha–1 yr−1, respectively. Soil exhumed due to erosion from elevated positions accumulated in the slope bottom. As a result, topographic transfiguration of hills and changes in soil properties occurred. However, the accumulation segments of slopes had significantly higher silt/clay ratios and SOC content. In the active erosion segments a lighter soil texture and lower soil pH were recorded. Only long-term grassland completely stopped soil erosion effects; therefore geomorphologic change and degradation of hills was esti- mated there as minimal.



中文翻译:

农业环境系统对土壤侵蚀过程和土壤性质对立陶宛西部丘陵景观的影响

这项研究的目的是评估立陶宛冰ora丘陵地形上不同土地利用系统对土壤侵蚀速率,表面演变过程和理化性质的影响。实验地点的土壤是Bachihypogleyi-优净白藜芦醇(ABe–gld–w),质地为沙壤土。在使用了不同的土地保护系统27年之后,形成了三个临界坡度段(轻微侵蚀,主动侵蚀和积聚)。检查土壤物理性质,土壤质地和粒径分布。分析的化学性质包括土壤pH值,有效磷(P)和钾(K),土壤有机碳(SOC)和总氮(N)。我们估计了易于持续侵蚀过程的土壤Ap水平厚度和土壤理化性质的变化。分别为3 ha–1 yr -1。由于斜坡底部积聚的高位侵蚀导致土壤发掘。结果,发生了山丘的地形变貌和土壤性质的变化。然而,斜坡的堆积段具有明显更高的粉土/粘土比和SOC含量。在活跃的侵蚀区,记录到较轻的土壤质地和较低的土壤pH。只有长期的草地才能完全阻止水土流失的影响。因此,估计那里的山地貌变化和退化程度很小。

更新日期:2016-03-24
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