Landform Analysis最新文献_第2页

The assessment of influence of soil erosion by water in the transformation of agricultural slopes of the Wiśnicz Foothills Wiśnicz山麓农业坡地改造中水土流失影响评价

Landform Analysis Pub Date : 2018-12-30 DOI: 10.12657/LANDFANA.036.008

J. Święchowicz

引用次数: 0

A global perspective on denudation data, primarily specific sediment yield in mountainous regions 剥蚀数据的全球视角，主要是山区的特定沉积物产量

Landform Analysis Pub Date : 2018-12-30 DOI: 10.12657/LANDFANA.036.003

O. Slaymaker

{"title":"A global perspective on denudation data, primarily specific sediment yield in mountainous regions","authors":"O. Slaymaker","doi":"10.12657/LANDFANA.036.003","DOIUrl":"https://doi.org/10.12657/LANDFANA.036.003","url":null,"abstract":"A brief review of the evolution of denudation research since the 1960s is followed by a review of specific sediment yield variability in mountainous regions of the world as a function of spatial scale, relief, glaciation, lithology and disturbance type and location within the basin. A general model of scalar relations of suspended sediment yield for Canadian regions warns against comparing data from basins with areas ranging over several orders of magnitude. A regional summary of specific sediment yield in mountainous British Columbia confirms that in basins <1 km2 and >30,000 km2 specific sediment yield decreases with basin size whereas in basins of intermediate size (between 1 km² and 30,000 km²) specific sediment yield increases with basin size. This effect is interpreted in terms of three distinct process zones in every mountain basin. These zones can be characterized as a) generally degrading hillslope zones, b) generally aggrading footslopes and valley sides, and c) channelized flows on valley floors demonstrating either net aggradation or degradation. These are identifiable repeating elements in such landscapes. Suspended sediment yield data from mountainous regions around the world are considered in light of the British Columbia model. Some support for the model is found where basins are stratified according to scale, relief, lithology, disturbance types, and location within each basin. Disturbance types include the presence of glaciers, land use activities of various kinds, such as increasing population pressure in the intertropical montane zone, changing population distribution and associated economic activities in the temperate montane zone, and potentially hydroclimate change.","PeriodicalId":30719,"journal":{"name":"Landform Analysis","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47373870","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Environmental factors affecting splash erosion in the mountain area (the Western Polish Carpathians) 影响山区飞溅侵蚀的环境因素（波兰西部喀尔巴阡山脉）

Landform Analysis Pub Date : 2018-12-30 DOI: 10.12657/landfana.036.009

Małgorzata Kijowska-Strugała, Krzysztof Kiszka

引用次数: 3

Zarys przyrodniczych i antropogenicznych uwarunkowań rozwoju systemów dolinnych i korytowych w Polsce

Landform Analysis Pub Date : 2018-12-30 DOI: 10.12657/landfana-037-002

L. Andrzejewski, K. Krzemień, Z. Zwoliński

引用次数: 2

Debris-flow functioning and their contribution to sedimentary budgets: the Peynin subcatchment of the Guil River (Upper Queyras, Southern French Alps) 泥石流功能及其对沉积收支的贡献:吉尔河Peynin子集水区(上奎拉斯，法国阿尔卑斯山南部)

Landform Analysis Pub Date : 2018-12-30 DOI: 10.12657/landfana.036.007

Vincent Viel, M. Fort, C. Lissak, K. Graff, B. Carlier, G. Arnaud-Fassetta, É. Cossart, M. Madelin

{"title":"Debris-flow functioning and their contribution to sedimentary budgets: the Peynin subcatchment of the Guil River (Upper Queyras, Southern French Alps)","authors":"Vincent Viel, M. Fort, C. Lissak, K. Graff, B. Carlier, G. Arnaud-Fassetta, É. Cossart, M. Madelin","doi":"10.12657/landfana.036.007","DOIUrl":"https://doi.org/10.12657/landfana.036.007","url":null,"abstract":"The Peynin catchment (15 km2) is prone to catastrophic floods (June 1957 – Recurrence Interval R.I.>100 yr), June 2000 (R.I.-30 yr) with serious damages to infrastructure and buildings located at the outlet. In this paper, PIT tags tracers and Vensim modelling software are used to better assess the sediment delivery unsteadiness, and more specifically to evaluate the respective role of geomorphological processes on sediment supply during flood event. For the last 20 years, our results highlight a significant variability in sediment delivery from a tributary to another one. According to our studies, we suppose that two torrential tributaries of the Peynin river, the Peyronnelle and Three Arbres subcatchments (<2 km2, representing <15% of the Peynin catchment area) are responsible of 80% of the sediments observed at the outlet of the catchment. Several processes take a part of these sediment transfers, but the efficiency of the sediment cascade in this catchment can be explained by a strong connectivity between sediment erosion area and the main channel of the catchment. Debris and torrential flows triggered during high intensity meteorological event are actually effectively coupled in space and time and guarantee an important sediment supply able to reload the downstream part of the sediment cascade. Recent climate trends, marked by extremes, suggest consequently more damaging events to come, in a context of increasing vulnerable assets","PeriodicalId":30719,"journal":{"name":"Landform Analysis","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45268144","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Random walk analysis of cave maps for exemplary gypsum caves-mazes of Western Ukraine 乌克兰西部典型石膏洞穴迷宫洞穴地图的随机行走分析

Landform Analysis Pub Date : 2018-12-30 DOI: 10.12657/landfana.036.001

T. Błachowicz, V. Andreychouk, K. Domino

引用次数: 0

The hydrological role of biological topsoil crusts and water repellency in sandy dry-land areas 沙质旱地表层生物结皮的水文作用和拒水性

Landform Analysis Pub Date : 2018-12-30 DOI: 10.12657/landfana.036.004

A. Yair, R. Almog, Y. Arbel

{"title":"The hydrological role of biological topsoil crusts and water repellency in sandy dry-land areas","authors":"A. Yair, R. Almog, Y. Arbel","doi":"10.12657/landfana.036.004","DOIUrl":"https://doi.org/10.12657/landfana.036.004","url":null,"abstract":"Dryland areas are regarded as highly sensitive to climatic changes. A positive relationship between rainfall and environmental factors is often assumed for areas with an average annual rainfall of 100–300 mm. This assumption disregards the fact that a climate change in arid areas is not limited to climatic factors. It is often accompanied by a pronounced spatial variability in surface characteristics. The present work deals with the complex relationships among average annual rainfall, surface properties and the spatial redistribution of water resources in sandy areas located in the Northern Negev Desert. Two case studies are considered. The first deals with the hydrological effects of biological topsoil crusts on the water regime, along a rainfall gradient (86–170 mm). This study is based on five monitoring sites. Data obtained show a decrease in water availability with increasing annual rainfall. The findings are attributed to the decisive role played by the non-uniform properties of the topsoil crust along the rainfall gradient. The second case refers to the non-uniform development, and survival, of planted trees. Trees planted on steep dunes are well developed, with a high survival rate, whereas trees planted on low angle dunes are small. This study focused on the role of a water repellent layer on the water regime. Data obtained show a striking difference between steep and low dunes in all aspects studied, namely the degree of water repellency, frequency and magnitude of runoff events, infiltration depth and soil moisture. All variables monitored were found higher on steep than on low dunes. The large trees shed a substantial amount of leaves, whose decay developed a water repellent layer. Runoff generation over the repellent layer enhanced deep water penetration, through the process of subsurface flow. The lack of a water repellent layer over the low dunes prevented runoff generation, with its positive effects.","PeriodicalId":30719,"journal":{"name":"Landform Analysis","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42513064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Conditions for soil erosion by water in the upper Parsęta catchment ParsÉta上游流域的水土流失条件

Landform Analysis Pub Date : 2018-12-30 DOI: 10.12657/LANDFANA.036.006

J. Szpikowski, M. Majewski, W. Madaj

引用次数: 0

Morphological analysis of the Woji River in Port Harcourt, Nigeria; using temporal data and mathematical algorithm 尼日利亚哈科特港沃吉河的形态分析采用时序数据和数学算法

Landform Analysis Pub Date : 2018-07-09 DOI: 10.12657/LANDFANA.035.008

Michael U.K. Anya, C. Ezekwe, C. Oyegun

引用次数: 1

Exploring Hawaiian long-term insular geodiversity dynamics 探索夏威夷长期岛屿地球多样性动力学

Landform Analysis Pub Date : 2018-07-09 DOI: 10.12657/LANDFANA.035.007

A. Seijmonsbergen, Jorinde Guldenaar, K. Rijsdijk

引用次数: 11