Increasing the Efficiency of Detailed Soil Resource Mapping on Transitional Volcanic Landforms Using a Geomorphometric Approach DOI Creative Commons
Ahmad Priyo Sambodo, Tanwa Arpornthip

Applied and Environmental Soil Science, Journal Year: 2021, Volume and Issue: 2021, P. 1 - 12

Published: May 31, 2021

For developing countries, detailed soil resource data and maps are essential in land-use planning. Unfortunately, obtaining for mapping is expensive. Detailed studies countries often use the grid method. In addition to being time-consuming, method needs a lot of sample points surveyors. Geomorphometry can be less expensive alternative mapping. uses computationally measured terrain characteristics describe other hard-to-measure properties. our study, landform arrangements slopes were analyzed together create map pH. Bompon watershed, Indonesia, was used as case study. Soil units with potentially similar pH created based on classification system two geomorphometric parameters. samples taken from each units. The samples' compared predicted result. Regression tests performed see significance parameters conditions. show that results p value four layers 0.046, 0.019, 0.037, 0.047, respectively, 5% confidence level. According test result, indicate conditions Bompon. Our estimate suggests cheaper than by factor seven. ability properties could enable cheap fast production countries.

Language: Английский

Reducing the grid orientation dependence of flow routing on square-grid digital elevation models DOI Creative Commons
Jari Hyväluoma

International Journal of Geographical Information Science, Journal Year: 2017, Volume and Issue: 31(11), P. 2272 - 2285

Published: July 31, 2017

Topographical parameters derived from digital elevation models by employing flow routing algorithms may depend on the orientation of square grid. Grid dependence results insufficient isotropy grid and affects directions subsequent calculations based routing. In this article, a systematic approach for analysing rotational invariance accumulation is presented applied. Computed maps are found to strongly orientation, especially if methods with low dispersion used. It also shown that can be significantly improved introducing numerical parameter resulting in adjustable weighting cardinal diagonal The actual value depends used method.

Language: Английский

Citations

9
Ergene Havzasında (Trakya) arazi kullanımı ve arazi örtüsü değişikliklerinin erozyon üzerine etkileri DOI Open Access
Emre Özşahin

ANADOLU JOURNAL OF AGRICULTURAL SCIENCES, Journal Year: 2016, Volume and Issue: 31(1), P. 117 - 117

Published: March 29, 2016

ÖZETErgene Havzasındaki arazi kullanımı ve örtüsü (AKAÖ) değişikliklerinin erozyonla ilişkisinin incelendiği bu çalışmada, coğrafi bilgi sistemleri (CBS) uzaktan algılama (UA) tekniklerine dayalı RUSLE (3D) yöntemi kullanılmıştır.Çalışma amacı

Citations

8
Застосування геоінформаційних систем в оцінюванні розвитку яружно-балкової ерозії степової зони України DOI Creative Commons

N. M. Tsvetkova,

I. I. Saranenko,

A. O. Dubina

et al.

Biosystems Diversity, Journal Year: 2015, Volume and Issue: 23(2), P. 197 - 202

Published: June 21, 2015

На території степової зони України з допомогою GPS навігатора та нівеліра встановлено координати вершин, конфігурацію меж, висоту, довжину, ширину 400 ярів, балок і байраків. Визначено вміст заліза у шарі 0–50 см. Отримані дані імпортовано QuantumGis нанесено на карту розораності земель України. Осередки скупчення досліджуваних об’єктів виявлено центральній східній частинах Степу. Аналіз причин показав комплексну дію чинників. За рік спостережень виявлено, що площа кожного яру зросла середньому 5 м², висота – 7 см, довжина 24 ширина 21 концентрація Fe знизилась 20 мг/кг. Основні причини значні опади нестійкий трав’яний покрив. Площа 1 4 14 9 залишилась без змін. Унаслідок того, деревні рослини стримують розвиток ерозійних процесів збагачують ґрунти мікроелементами, байраків спостерігається зменшення висоти см зростання концентрації мг/кг, значення інших показників не змінились. У середовищі створено електронні карти щільності поширеності степовій зоні їх визначено залежність між досліджуваними процесами природними умовами, межові кути повороту, площу яружно-балкової ерозії. Створено проект бази даних щодо вмісту мікроелементів особливостей міграції за байрачним профілем із метою подальшого застосування процесі розроблення необхідних заходів боротьби ерозією.

Citations

8
Contrasting soil dynamics in a formerly glaciated and non-glaciated Mediterranean mountain plateau (Serra da Estrela, Portugal) DOI Creative Commons
Gerald Raab,

Wasja Dollenmeier,

Dmitry Tikhomirov

et al.

CATENA, Journal Year: 2022, Volume and Issue: 215, P. 106314 - 106314

Published: April 21, 2022

Few data are available on how soil erosion rates compare between surfaces of different ages because short-term processes often overprint the longer-term signal. This study investigated dynamics among two end-member sites, a formerly glaciated ('young', maximum glacial extent at 22–30 ka BP) and non-glaciated ('old') area Serra da Estrela (Portugal). To disentangle distribution over timeframes, isotopes for long-term (10Be), mid-term (δ13C) (239+240Pu) periods were applied together with principles percolation theory. The has soils lower degree weathering carbon content compared to 'old', area. selected their along profiles revealed temporal differences in mixing process. It is hypothesised that slightly higher elevation sites experienced cryoturbation effects longer period, while being less active or absent last few decades older, soils. average (millennia) correspond expected younger surface older surface. Once became ice-free, high decreased giving rise 101–140 [t km−2 yr−1] 176–248 surfaces. In addition, seasonal freeze–thaw persisted long period affected more intensively than current (last decades) redistribution rates, however, up one order magnitude millennia controlled by angle vegetation cover texture. undulated, had highest (decades) range 900–1700 yr−1], exhibits degrading conditions relatively shallow soils, showed deposition ∼ 230 yr−1]. Human impact (bush fires, grazing) cause currently strong degradation

Language: Английский

Citations

5
Increasing the Efficiency of Detailed Soil Resource Mapping on Transitional Volcanic Landforms Using a Geomorphometric Approach DOI Creative Commons
Ahmad Priyo Sambodo, Tanwa Arpornthip

Applied and Environmental Soil Science, Journal Year: 2021, Volume and Issue: 2021, P. 1 - 12

Published: May 31, 2021

For developing countries, detailed soil resource data and maps are essential in land-use planning. Unfortunately, obtaining for mapping is expensive. Detailed studies countries often use the grid method. In addition to being time-consuming, method needs a lot of sample points surveyors. Geomorphometry can be less expensive alternative mapping. uses computationally measured terrain characteristics describe other hard-to-measure properties. our study, landform arrangements slopes were analyzed together create map pH. Bompon watershed, Indonesia, was used as case study. Soil units with potentially similar pH created based on classification system two geomorphometric parameters. samples taken from each units. The samples' compared predicted result. Regression tests performed see significance parameters conditions. show that results p value four layers 0.046, 0.019, 0.037, 0.047, respectively, 5% confidence level. According test result, indicate conditions Bompon. Our estimate suggests cheaper than by factor seven. ability properties could enable cheap fast production countries.

Language: Английский

Citations

6