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Journal of Water Resource and Protection 2022年第2期14卷 100-125页

作者： Verenice Escamilla-Rivera Sergio Cortina-Villar Raúl A. Vaca Duncan Golicher José Arellano-Monterrosas Jordi Honey-Rosés Patagonian Institute for the Study of Continental Ecosystems IPEEC-CONICET-CENPAT Puerto Madryn Argentina Center for Demographic Urban and Environmental Studies El Colegio de México A.C. Mexico City Mexico Department of Agriculture Society and Environment El Colegio de la Frontera Sur San Cristóbal de Las Casas Mexico National Council of Science and Technology El Colegio de San Luis (CONACYT-COLSAN) San Luis Potosí Mexico Department of Life and Environmental Sciences Bournemouth University Dorset United Kingdom National Water Commission CONAGUA Mexico City Mexico Institute for Environmental Science and Technology Universitat Autonoma de Barcelona (ICTA-UAB) Barcelona Espa&ntilde a Institute for Resources Environment and Sustainability (IRES) The University of British Columbia Vancouver Canada

The limited availability of high-quality spatial data often limits the development of hydrological modelling in developing countries. Hydrological models with data at different scales may generate large uncertainties in modelling outputs. This study analysed the accuracy of four SWAT built models that combine soil and land use/land cover (LULC) data at the scale of 1:250,000 and 1:100,000 in a basin of Mexico. SWAT model allowed determining that large-scale maps produced better results than data from small-scale. Sensitivity analysis with different soil data was less than LULC data. However, the small-scale can be used for exploratory purposes when testing SWAT performance.

关键词： Map Scale SWAT Model soil survey Land Use/Land Cover Mexico

Assessment of soilGrids data for soil erosion estimation at watershed scale: A case study in northern Thailand

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Pedosphere 2024年第4期34卷 797-813页

作者： Chike Onyeka MADUEKE Dhruba Pikha SHRESTHA Panagiotis NYKTAS Department of Natural Resources Faculty of Geo-information Science and Earth Observation(ITC)University of TwenteEnschede 7500 AEthe Netherlands Department of Applied Earth Sciences Faculty of Geo-information Science and Earth Observation(ITC)University of TwenteEnschede 7500 AEthe Netherlands Department of soil Science and Land Resources Management Nnamdi Azikiwe UniversityP.M.B.5025AwkaAnambra State 420110Nigeria

soil erosion has been identified as one of the most destructive forms of land degradation,posing a threat to the sustainability of global economic,social and environmental *** underscores the need for sustainable land management that takes erosion control and prevention into *** requires the use of state-of-the-art erosion prediction *** models often require extensive input of detailed spatial and temporal data,some of which are not readily available in many developing countries,particularly detailed soil *** soil dataset Global Gridded soil Information(soilGrids)could potentially fill the data ***,its value and accuracy for soil erosion modelling in the humid tropics is still unknown,necessitating the need to assess its value vis-à-vis field-based *** major objective of this study was to conduct a comparative assessment of the value of soilGrids and field-based soil data for estimating soil *** samples were collected from five physiographic positions(summit,shoulder,back slope,foot slope,and toe slope)using the soil catena *** were collected using a 5-cm steel sample ring(undisturbed)and a spade(disturbed).Data of the landform,predominant vegetation types,canopy cover,average plant height,land use,soil depth,shear strength,and soil color were recorded for each *** soil samples were subjected to laboratory analysis for saturated hydraulic conductivity,bulk density,particle size distribution,and organic matter *** functions were applied on the soilGrids and field-based data to generate soil hydrological *** resultant field-based data were compared with the soilGrids data for corresponding points/areas to determine the potential similarities of the two *** datasets were then used as inputs for soil erosion assessment using the revised Morgan-Morgan-Finney *** results from both datasets were again compared to determine the degree of *** r

关键词： hillslope modelling pedotransfer function similarity assessment soil erosion modelling soil loss soil survey

Digital soil Mapping Using Artificial Neural Networks and Terrain-Related Attributes

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Pedosphere 2015年第4期25卷 580-591页

作者： Mohsen BAGHERI BODAGHABADI José Antonio MARTINEZ-CASASNOVAS Mohammad Hasan SALEHI Jahangard MOHAMMADI Isa ESFANDIARPOOR BORUJENI Norair TOOMANIAN Amir GANDOMKAR Department of Geography Najafabad Branch Islamic Azad University Department of Environmental and soil Science University of Lleida Department of soil Science College of Agriculture Shahrekord University Department of soil Science College of Agriculture Vali-e-Asr University Agriculture and Natural Resource Research Center

Detailed soil surveys involve costly and time-consuming work and require expert knowledge. Since soil surveys provide information to meet a wide range of needs, new methods are necessary to map soils quickly and accurately. In this study, multilayer perceptron artificial neural networks(ANNs) were developed to map soil units using digital elevation model(DEM) attributes. Several optimal ANNs were produced based on a number of input data and hidden units. The approach used test and validation areas to calculate the accuracy of interpolated and extrapolated data. The results showed that the system and level of soil classification employed had a direct effect on the accuracy of the results. At the lowest level, smaller errors were observed with the World Reference Base(WRB)classification criteria than the soil Taxonomy(ST) system, but more soil classes could be predicted when using ST(7 soils in the case of ST vs. 5 with WRB). Training errors were below 11% for all the ANN models applied, while the test error(interpolation error) and validation error(extrapolation error) were as high as 50% and 70%, respectively. As expected, soil prediction using a higher level of classification presented a better overall level of accuracy. To obtain better predictions, in addition to DEM attributes, data related to landforms and/or lithology as soil-forming factors, should be used as ANN input data.

关键词： digital elevation model attributes multilayer perceptron soil classification soil-forming factors soil survey

Spatial Variability of Nutrient Properties in Black soil of Northeast China

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Pedosphere 2007年第1期17卷 19-29页

作者： ZHANG Xing-Yi SUI Yue-Yu ZHANG Xu-Dong MENG Kai S. J. HERBERT Northeast Institute of Geography and Agroecology Chinese Academy of Sciences Harbin 150081 （China） Institute of Applied Ecology Chinese Academy of Sciences Shenyang 110016 （China） Heilongjiang University Harbin 150080 （China） Department of Plant Soil and Insect Sciences University of Massachusetts Amherst MA 01003 （USA）

A total of 1400 soil samples from the plow layer （0-20 cm） at an approximate interval of 5 km were collected in the autumn of 2002 over the entire black soil arable crops region to determine the spatial variability of seven variables, such as total organic matter content （OMC）, total N, total P, total K, alkali-dissolvable N （AN）, available P （AP） and available K （AK）, with classical statistics and geostatistical analysis across the entire black soil area in Northeast China. In nonsampled areas ordinary kriging was utilized for interpolation of estimated nutrient determinations. Classical statistics revealed highly significant （P ≤ 0.01） correlations with all seven of the soil properties, except for OMC with AP and total K with AK. In addition, using coefficients of variation, all soil properties, except for total K, were moderately variable. A geostatistical analysis indicated that structural factors, such as parent material, terrain, and water table, were the main causes of the spatial correlations. Strong spatial correlations were noted with OMC, total N, total P, AN, and AP, while they were moderate for total K and AK. The effective spatial autocorrelation of OMC, total N, total P, and AN ranged from 1 037 to 1353 km, whereas the ranges of total K, AP, and AK were only from 6 to 138 km. The fit of the experimental scmi-variograms to the theoretical models indicated that except for AN, kriging could successfully interpolate other six variables. Thns, the geostatistical method used on a large scale could accurately evaluate the spatial variability of most black soil nutrient properties in Northeast China.

关键词： black soil China geostatistics analysis soil survey spatial variability

Current soil Nutrient Status of Intensively Managed Greenhouses

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Pedosphere 2012年第6期22卷 825-833页

作者： HU Yun-Cai SONG Zhi-Wen LU Wen-Long C. POSCHENRIEDER U. SCHMIDHALTER Chair of Plant Nutrition Technische Universitat Miinchen D-85350 Freising (Germany) Institute of Information Tianjin Academy of Agricultural Sciences Tianjin (China)

Nine districts covering the main greenhouse vegetable areas in Tianjin Municipality of the North China Plain were selected for the soil investigation in 2010 to survey the current soil nutrient status (soil available N, P and K), acidification and salinization due to excessive input of fertilizers in greenhouses in Tianjin. The study showed that, in particular, soil available P content increased with the age of greenhouses. In contrast, our results did not reveal higher K accumulation and lowered pH in the greenhouse soils compared with cultivation in open fields. Over-fertilization, causing high NO 3 accumulation, most likely resulted in salinity problems in the greenhouses. Ninety percent of the investigated greenhouse soils had electrical conductivity values of saturated paste extracts of 2-10 d S m-1 , which might affect the yields of vegetable crops like green bean, pepper, cabbage, carrot, eggplant, lettuce, spinach, celery, cucumber and tomato. The findings of our survey of the current fertility and salinity problems in greenhouse soils suggest that there is an urgent need to improve the farmers' practices and strategies in fertilization management in greenhouses of China. Because education and the agricultural technical extension services may play a more important role in avoiding overuse of fertilizers, we suggest that current nutrient management practices should be improved in the near future through training of local farmers in farmers' schools and through strengthening the agricultural extension services with practical techniques.

关键词： electrical conductivity greenhouse vegetables over-fertilization soil pH soil survey

GIS approach for assessment of land suitability for different land use alternatives in semi arid environment in Jordan:Case study(Al Gadeer Alabyad-Mafraq)

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Information Processing in Agriculture 2019年第1期6卷 91-108页

作者： Safa Mazahreh Majed Bsoul Doaa Abu Hamoor GIS Unit National Centre for Agricultural Research and Extension(NCARE)Baqa’Jordan

The semi arid lands of Jordan are fragile and severely degraded due to low rainfall and mismanagement of natural *** human demands increase,sustaining the productivity of land becomes more and more *** suitability evaluation can contribute towards better land management;mitigation of land degradation;and designing land use pattern that prevents environmental problems through segregation of competing land *** analysis allows identifying the main limiting factors for the agricultural production and enables decision makers to develop crop managements able to increase the land *** purpose of this study was to develop a Geographic Information System(GIS)based approach for land use suitability assessment in order to assist land managers to identify areas with physical limitations for different land use alternatives based on research criteria developed by FAO and modified by *** study was conducted using various data and maps incorporated within(GIS)in order to derive potential suitability for different Land Utilization Types(LUTs).Land suitability mapping was developed using an innovative approach that integrates soil and climatic data for land suitability *** maps for each land use were developed to show the suitability classes and display the spatial representation of soils suitable for *** output of suitability analyses provided not only the type of land use for which the land was suitable,but also information about the type of limitation(s)facing the utilization of the *** land use alternatives(scenarios)were formulated to improve and optimize the agricultural production in the study area.

关键词： Land utilization types soil survey Land suitability criteria Suitability mapping GIS Scenarios

Application of geophysical-geochemical method in verification of stream sediment anomaly in Baoxinggou area of Heilongjiang

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Global Geology 2015年第1期18卷 67-74页

作者： LU Yurun LIU Cai LI Qinglu YU Chengwei ZHANG Donghui College of Geo-Exploration Science and Technology Jilin University No.3 Gold Geological Party of Chinese People's Armed Police Force

Baoxinggou area is located in northern Daxing'anling. In this area,comprehensive use of geophysical and geochemical exploration methods plays an important role in the prospecting,and has yielded some application results so far. Based on the 1 /100 000 stream sediment anomaly survey,the methods of 1 /20 000 soil geochemical measurement,trenching engineering on the earth's surface and 1 /10 000 IP intermediate gradient survey were all used to verify and decompose drainage anomalies,as well as to find and locate ore bodies. In this way,an effective,economical and quick prospecting method was concluded,which focuses on the middle and lower mountain forest swamp landscape in the northern part of Daxing'anling,and provides reference for the prospecting in the area.

关键词： stream sediment survey soil survey induced polarization intermediate gradient measurement Baoxinggou Heilongjiang

Studies on Land Resource Inventory for Agricultural Land Use Planning in Northern Transition Zone of India through Remote Sensing and GIS Techniques

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Journal of Geographic Information System 2021年第6期13卷 710-728页

作者： Denis Magnus Ken Amara Sayyadsaheb A. Nadaf Daniel Hindogbe Saidu Osman S. Vonu Raymond Morie Musa Philip Jimia Kamanda Patrick A. Sawyerr John Christian Mboma Saidu Deggy Mansaray Mohammed Azim Sannoh Department of soil Science & Agricultural Chemistry University of Agricultural Sciences Dharwad Dharwad India Department of soil Science School of Agriculture & Food Sciences Njala University Njala Campus Freetown Sierra Leone Department of Agriculture Food Security & Livelihood Sustainable Cassava Commercialization through Entrepreneurs Strengthening & Support (SUCCESS) Project BRAC Bo Sierra Leone Department of soil Science Eastern Technical University of Sierra Leone Private Mail Bag Kenema Sierra Leone Department of Agricultural Education Eastern Technical University of Sierra Leone Private Mail Bag Kenema Sierra Leone Department of Extension & Rural Sociology School of Agriculture & Food Sciences Njala University Freetown Sierra Leone Department of Social Studies Eastern Technical University of Sierra Leone Private Mail Bag Kenema Sierra Leone

Land suitability analysis is a prerequisite to achieving optimum utilization of available land resources. Hence, a study on land resource inventory for agricultural land use planning was conducted in the Northern Transition Zone of India to determine land capability and develop a suitability map for wheat and sorghum-based on physical and climatic factors of production using remote sensing and GIS techniques. Detailed soil survey information was used for this exercise. Four series (Singhanhalli, Mugli, Bogur and Venkatapur series) were identified and mapped into seventeen mapping units. Land capability classification showed that a greater portion of the study area belonged to class III followed by class IV with limitations of erosion, wetness and varying soil properties. Four land capability classes viz., II, III, IV, and VI, and seven subclasses viz., IIsf, IIItsf, IVs, IVt, IVts, IVtsf and VIt were identified. Major limitations of these subclasses were slope, erosion, depth, texture, coarse fragments, pH, organic carbon and base saturation. soil suitability assessment revealed that the soils are moderately suitable to permanently not suitable. About 234 ha (31.6%) is moderately suitable, 494 ha (65.0%) marginally suitable and 10.2 ha (1.3%) permanently not suitable for wheat;while 78.5 ha (10.3%) is moderately suitable, 633.4 ha (82.3%) marginally suitable and 32.6 ha (4.3%) permanently not suitable for sorghum respectively. The moderate, marginal and permanent non-suitability was due to moderate, severe and very severe limitations respectively. However, it is possible to achieve potential yield of the crops in the study area if these limitations are addressed.

关键词： Land Resource Inventory soil Suitability Land Use Planning Land Evaluation soil survey Remote Sensing soil Mapping

Effects of soil Management on Changes of soil Carbon Content in Alluvial Paddy soil

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Journal of Environmental Science and Engineering(A) 2012年第2期1卷 219-223页

作者： Toshimitsu Honma Hirotomo Ohba Takuj i Ohyama Niigata Agricultural Research Institute Niigata 9400826 Japan Graduate School of Science and Technology Niigata University Niigata 9502181 Japan Plant Nutrition and Radiotracer Imaging Group Life Science and Biotechnology Division Gunma 3701207 Japan

Effects of soil management on carbon content in alluvial paddy were investigated using past soil survey data of Niigata prefecture, Japan. The changes of soil management were as follows：（1） slight decrease in nitrogen and phosphate fertilizer application rates; （2） decrease to half in the application of soil amendments, like calcium silicate; （3） decrease in compost application and increase in rice straw application; （4） increase in pipe drainage. In spite of these changes, negligible change of carbon content in the plow-layer of alluvial paddy soils had been observed for past 25 years. However, without rice straw application and paddy-upland rotations, the soil carbon content had been decreased. Carbon content of alluvial paddy soils classified into Gley Lowland soil （Fluvisol or Gleysol） at the depth of 0-30 cm was calculated about 49-103 g-kg＂1 and gross carbon sequestration was calculated 7.68 Mt in the paddy field soils in Niigata prefecture.

关键词： Carbon sequestration soil survey alluvial paddy soil management.

ELECTRICAL GEOPHYSICAL METHODS IN AGRICULTURE

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ELECTRICAL GEOPHYSICAL METHODS IN AGRICULTURE