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| 1 | Prediction of Soil Depth from Digital Terrain Data by Integrating Statistical and Visual Approaches显示文摘Information about the spatial distribution of soil attributes is indispensable for many land resource management applications; however, the ability of soil maps to supply such information for modern modeling tools is questionable. The objectives of this study were to investigate the possibility of predicting soil depth using some terrain attributes derived from digital elevation models (DEMs) with geographic information systems (GIS) and to suggest an approach to predict other soil attributes. Soil depth was determined at 652 field observations over the Al-Muwaqqar Watershed (70 km2) in Jordan. Terrain attributes derived from 30-m resolution DEMs were utilized to predict soil depth. The results indicated that the use of multiple linear regression models within small watershed subdivisions enabled the prediction of soil depth with a difference of 50 cm for 77% of the field observations. The spatial distribution of the predicted soil depth was visually coincided and had good correlations with the spatial distribution of the classes amalgamating three terrain attributes, slope steepness, slope shape, and compound topographic index. These suggested that the modeling of soil-landscape relationships within small watershed subdivisions using the three terrain attributes was a promising approach to predict other soil attributes. | F. M. ZIADAT | 2010 | Pedosphere2010，20，3： | 5 |
| 2 | Soil-landscape modeling and land suitability evaluation:the case of rainwater harvesting in a dry rangeland environment显示文摘 | Al-Shamiri A Ziadat F M | 2012 | International Journal of Applied Earth Observation and Geoinformation2012，18，： | 1 |
| 3 | Major factors contributing to environmental awareness among people in a third world country/Jordan显示文摘 | Anf H. Ziadat | 2010 | Environment, Development and Sustainability2010，，： | 1 |
| 4 | Stream depth significance during in-situ sediment oxygen demand measurements in shallow streams显示文摘 | ZIADAT A H BERDANIER B W | 2004 | Journal of the American Water Resources Association2004，40，3： | 1 |
| 5 | Land suitability classification using different sources of information: Soil maps and predicted soil attributes in Jordan 显示文摘 | Ziadat F M | 2007 | Geoderma2007，140，12： | 1 |
| 6 | Variation in soilchemical properties along toposequences in an arid regionof the Levant显示文摘 | Hattar BI Taimeh AY Ziadat FM | 2010 | Catena2010，83，1： | 1 |
| 7 | Analyzing digital terrain attributes to predict soil attributes for a relatively large area 显示文摘 | ZIADAT F M | 2005 | Soil Science Society of America Journal2005，69，： | 1 |
| 8 | Analyzing digital terrain attributes to pre-dict soil attributes for a relatively area显示文摘 | Ziadat F M | 2005 | Soil ScienceSociety of America Journal2005，69，5： | 1 |
| 9 | Major factors contributing to environmental awareness among people in a third world country/Jordan显示文摘 | Anf H. Ziadat | 2010 | Environment Development and Sustainability2010，，1： | 1 |
| 10 | Stream depth significance during in-situ sediment oxygen demand measurements in shallow streams 显示文摘 | Ziadat A H Berdanier B W 2004 | 2004 | Journal of the American Water Re- sources Association2004，40，3： | 1 |
| 11 | Land suitability classification using different sourees of information:Soil maps and predicted soil attributes in Jordan 显示文摘 | Ziadat F M | 2007 | Geoderma2007，140，12： | 1 |
| 12 | Analyzing digital terrain attributes to predict soil at- tributes for a relatively large area 显示文摘 | Ziadat F M | 2005 | Soil Science Society of AmerlcaJournal2005，69，5： | 1 |
| 13 | Effect of Contour Intervals and Grid Cell Size on the Accuracy of DEMs and Slope Derivatives显示文摘 | Ziadat F M | 2007 | Transactions inGIS2007，11，1： | 1 |
| 14 | Stream depth significance during in-situ sediment oxygen demand measurements in shallow streams 显示文摘 | ZIADAT A H BERDANIER B W | 2004 | Journal of the American Water Resources Association2004，40，3： | 1 |
| 15 | Alternative cropping systems to control soil erosion in the arid to semi-arid areas of jordan显示文摘 | Sharaiha Ramzi K Ziadat Feras M | 2008 | Arid Land Research and Management2008，，： | 1 |
| 16 | A Participatory GIS Approach to Identify Critical Land Degradation Areas and Prioritize Soil Conservation for Mountainous Olive Groves(Case Study)显示文摘Climate change scenarios predict an increase in the frequency of heavy rainfall events in some areas. This will increase runoff and soil erosion,and reduce agricultural productivity, particularly on vulnerable mountainous agricultural lands that is already exhibiting high rates of soil erosion.Haphazard implementation of soil and water conservation(SWC) interventions on scattered fields is inefficient in reducing soil erosion. The objective of this study was to identify areas at high risk of erosion to aid the design and implementation of sustainable SWC using GIS analysis and farmers' participation approach. A 25 m digital elevation model(DEM) was used to derive layers of flow accumulation, slope steepness and land curvature, which were used to derive an erosion-risk(priority) map for the whole watershed. Boundaries of farmers' fields were mapped and verified by the community and each field was classified into high, moderate or low erosion risk.Fields with low flow accumulation(top of hill) and/or steep slope and/or convex slope were assigned high erosion risk and therefore high implementation priority. The study showed that more than 64% of the fields were classified into high erosion risk areas.Accordingly, a community-watershed plan was established, revised and approved by the community.Incentive loans to implement SWC measures were distributed to 100 farmers based on the priorities of their fields. Judged by local farmers and using 16 randomly selected fields, 90% of the targeted areas were correctly identified using the erosion risk map. After two years, the conservation measures had led to marked improvement of soil conservation. The approach is simple and easy to comprehend by the community and provides scientific basis to prioritize the implementation of SWC and to target the most degraded areas, which amplify the impact of these in reducing the vulnerability to land degradation. | Ahmed AL-WADAEY Feras ZIADAT | 2014 | Journal of Mountain Science2014，11，3： | 1 |
| 17 | Effect of rainfall intensity,slope,land use and antecedent soil moisture on soil erosion in an arid environment显示文摘 | Ziadat F M Taimeh A Y | 2013 | Land Degradation&Development2013，24，6： | 1 |
| 18 | Analyzing digital terrain attributes to predict soil attributesfor a relatively area显示文摘 | Ziadat F M | 2005 | Soil Science Society of America Journal2005，69，5： | 1 |
| 19 | Analyzing digital terrain attributes to predict soil attributes for a relatively area显示文摘 | Ziadat F M | 2005 | Soil Science Society of America Journal2005，69，5： | 1 |
| 20 | Land suitability classification using different sources of information:Soil maps and predicted soil attributes in Jordan显示文摘 | Ziadat F M | 2007 | Geoderma2007，140，12： | 1 |
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