ANALYSIS OF INFILTRATION RATES OF SOILS ON THE INNER SLOPES OF THE LAKE SFÂNTA ANA CRATER

IF 0.9 4区 环境科学与生态学 Q4 ENVIRONMENTAL SCIENCES Carpathian Journal of Earth and Environmental Sciences Pub Date : 2022-02-01 DOI:10.26471/cjees/2022/017/204
P. Szmolka, N. Frank
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Abstract

The present study consists of the comparative analysis of infiltration rates of soils under different land-cover conditions (dirt trails, grass plots and different types of forest stands) on the inner slopes of the Sfânta Ana crater, the catchment area of Lake Sfânta Ana in Romania. According to historical data, the depth and the surface of Lake Sfânta Ana have been undergoing significant changes during the last century, it lost in depth and the surface area shrunk approximatively 1,5 hectares. The losses are considered to be the consequences of the sedimentation as a result of the inflow processes from the catchment area, reduction of water level and eutrophication. The assessment and comparative analysis of steady infiltration rates of soils under different land-use categories in the catchment area were carried out to identify the possible sources of generation of surface flows responsible for sediment transport towards the lake using In Situ determinations with Double Ring Infiltrometers (DRI). Statistically significant differences were found between samples collected from grass plots, forests and the dirt trails, and within different forest stand structures. Results show that dirt trails and grass plots can be held responsible for the generation of surface flows. The main cause of low infiltration rates is soil compaction. Different forest stands are characterized by steady infiltration rates with high values and therefore provide effective protection. High forest coverage must be maintained in the crater, the problem of soil compaction on grass plots and dirt trails must be addressed.
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湖内坡土壤入渗速率分析sfÂnta ana火山口
本研究包括对罗马尼亚Sânta Ana湖集水区Sânda Ana火山口内坡不同土地覆盖条件(土路、草地和不同类型的林分)下土壤的渗透率进行比较分析。根据历史数据,上个世纪,Sânta Ana湖的深度和表面发生了重大变化,深度下降,表面积缩小了约1.5公顷。损失被认为是由于集水区的流入过程、水位下降和富营养化造成的沉积的结果。对集水区不同土地利用类别下土壤的稳定入渗率进行了评估和比较分析,以确定产生地表流的可能来源,这些地表流负责向湖泊输送沉积物,使用双环渗透计(DRI)进行现场测定。从草地、森林和土路采集的样本之间以及不同林分结构内的样本之间存在统计学上的显著差异。结果表明,土迹和草地可能是地表径流产生的原因。低渗透率的主要原因是土壤压实。不同的林分具有稳定的高渗透率,因此提供了有效的保护。火山口必须保持高森林覆盖率,必须解决草地和土路上的土壤压实问题。
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来源期刊
CiteScore
2.30
自引率
25.00%
发文量
42
审稿时长
12-24 weeks
期刊介绍: The publishing of CARPATHIAN JOURNAL of EARTH and ENVIRONMENTAL SCIENCES has started in 2006. The regularity of this magazine is biannual. The magazine will publish scientific works, in international purposes, in different areas of research, such as : geology, geography, environmental sciences, the environmental pollution and protection, environmental chemistry and physic, environmental biodegradation, climatic exchanges, fighting against natural disasters, protected areas, soil degradation, water quality, water supplies, sustainable development.
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