共查询到20条相似文献，搜索用时 31 毫秒
1.
Land suitability evaluation is prerequisite for assessing the limitations for sustainable land use planning. We used ten site specific criteria (rainfall, texture, drainage, soil depth, slope, distance to major road, distance to nearest sugar mill, erosion hazard, risk of flooding and pH) and applied weighted multi-criteria evaluation (MCE) technique in a geographic information system (GIS) environment to evaluate land suitability for sugarcane cultivation in Bijnor district, India. The weightage of all the parameters was calculated through fuzzy analytical hierarchy process. Sugarcane suitability map was prepared integrating various parameters through weighted overlay analysis. The map was categorized as highly suitable (S1), moderately suitable (S2), marginally suitable (S3) and unsuitable (N). The analysis revealed that of the total cultivable land of the district, largest area (61%) was highly suitable followed by moderately suitable (24%), marginally suitable (7%) and unsuitable (8%) for sugarcane cultivation. Nagina, Najibabad and Bijnor sub-districts need attention of land managers and policy makers to remove the limitations and increase the suitability of sugarcane in such areas. Only 7% area was unsuitable for sugarcane cultivation. Slope, soil depth and erosion hazard were the major limiting factors making the land unsuitable for sugarcane cultivation. Therefore, these areas should be given priority for land and soil restoration efforts. The study showed effectiveness of integrated GIS and MCE approach for land suitability analysis of sugarcane. 相似文献
2.
The main objective of this study was to discuss the efficiency of agricultural land suitability for assessing land use types in rural areas. In this research, El-Nubariya area west of Nile Delta was selected as a case study site, which considers one of the high priority regions for future development in Egypt. As input, a total of ten representative soil profiles and number of observations points were used for collecting soil samples. Based on the field survey, laboratory analysis, and satellite image interpretation in cooperation with geographic information system (GIS), the physiographic map was executed. Three main landscape units were identified as follow: marine deposits, eolian deposits, and river terraces. The soils were classified mainly as Typic Torripsamments, Typic Paleorthids, and Typic Calciorthids. Land suitability assessment was done to define maps of the suitable areas for agricultural production using MicroLEIS microcomputer program and ALESarid-GIS system as well. According to the crop suitability results, the most suitable crops to grow in the study area were maize, melon, potato, sunflower, onion, garlic, olive, and date palm in the order indicated. Generally, the data on land suitability resulting from the evaluation models indicated that 56.1 % of the area is considered as suitable, 30.8 % is moderately to marginally suitable, and 13.1 % is not suitable. The main limitation factors for land suitability are the excess of salts, shallow soil depth, and inadequate drainage conditions. The output results are presented as georeferenced soil suitability maps using GIS utilities. 相似文献
3.
Ali Mahmoud Mahmoud Mohamed Shendi Biswajeet Pradhan Fatma Attia 《Central European Journal of Geosciences》2009,1(3):347-367
The North-Western Coast of Egypt (NWCE) represents one of the high priority regions for future development in the country. El-Hammam area is located in the NWCE with an area of 94752 acres and is one of the main challenging regions for sustaianble development. In this study, we have used remote sensing and soil data in combination with GIS tools, for land use sustainable analysis (SLU) in El-Hammam area. The SLU was established based on various factors such as: land capability and suitability, water resources availability, economic return from water and financial return from land and water. A physiographic soil map for the study area was prepared using remote sensing and GIS. Multiple field surveys were carried out for collecting information on various soil map units (SMUs) and their profiles. Laboratory analysis for the collected samples was performed, and then the soil properties were stored as attributes in a geographical soil database linked with the SMUs. Furthermore, land capability assessment was done to define the suitable areas for agricultural production using a capability model built in ALES software. Results indicate that the area currently lacks high capability and moderate capability classes. By improving the soil properties, the soil can attain potential capability; and 55630 acres will become marginally capable. The assessment of soil physical suitability for different land use types (LUTs) were analysed in ALES software, in order to generate the most suitable areas. The results from the land suitability analysis indicated that, 17114 acres are moderately suitable for wheat and sorghum; whereas 15823 acres are moderately suitable for barley and 12752 acres are moderately suitable for maize, olive and figs. Finally, the SLU was investigated based on two scenarios; (1) the most SLU under the conditions of shortage of irrigation water: clover, barley and sorghum against figs, as the irrigation requirements for barley and sorghum are low; (2) the most sustainable land use in the conditions of irrigation availability will be wheat and maize against figs and guava. From the results it is quite evident that GIS combined with modeling approaches are powerful tools for decision making in the study area. 相似文献
4.
GIS-based land suitability analysis integrating multi-criteria evaluation for the allocation of potential pollution sources 总被引：2，自引：1，他引：1
The geological environment has been heavily polluted by chemical substances over the past few decades. Pollution sources located on the earth’s surface or underground have affected the quality of the environment. A significant amount of impact could be reduced if the allocation of potential pollution sources was based on an evaluation of environmental conditions. The main objective of this study was to develop a methodology for the allocation of potential pollution sources by employing GIS and multi-criteria evaluation techniques. This methodology was applied to a study area located in the eastern part of Lithuania. A GIS-based land suitability analysis was performed after identifying 16 factors concerning the geological and socio-economic environment, which were important for environmental protection, land use and spatial planning. The environmental and socio-economic factors were divided into eliminating and limiting criteria. Criteria maps based on the selected factors were compiled. Areas delineated by eliminating criteria were identified as unsuitable for development (according to national legislation). Limiting criteria were evaluated according to the suitability level, which were determined in this study considering the principles of sustainable development. The relative importance of each criterion was assessed utilising the Analytical Hierarchy Process (AHP). A land suitability index (LSI) was calculated and the final result of the land suitability analysis was summarized in three suitability maps (environmental, socio-economic and composite). Four suitability classes (unsuitable, least, moderately and most suitable) for the allocation of potential pollution sources in the study area were used, and the nine most suitable candidate sites were selected according to the proposed methodology. 相似文献
5.
基于GIS的岩溶煤矿区土地利用适宜性评价研究——以重庆市南桐矿区为例 总被引：1，自引：0，他引：1
以SPOT5卫星为基本信息获取该地区的地貌数据,并根据该地区的土地利用现状、土壤特征、煤炭开采状况等9个指标,采用多因素分级指标综合评价法对南桐矿区的土地利用适宜性进行评价。按照土地的用途划分宜耕、宜园和宜林土地类三个类型,根据影响因子对土地用途的影响程度制定分级指标。评价结果表明,高度适宜、中等适宜、基本适宜和不适宜耕地分别为5 321hm2、8361hm2、7 973hm2和4 656hm2;园地分别为315hm2、629hm2、405hm2 和117hm2;林地分别为8 867hm2、7303hm2、5 977hm2 和2 643hm2。为能更好地利用土地资源和促进矿区的可持续发展,建议将原来的耕地、园地和林业用地比例10∶ 0. 6∶ 9. 4调整为10∶ 5. 7∶ 14。 相似文献
6.
Widad Ennaji Ahmed Barakat Mohamed El Baghdadi Hakima Oumenskou Mohamed Aadraoui Lalla Aicha Karroum Abdessamad Hilali 《Journal of Earth System Science》2018,127(6):79
Assessment of soil suitability for sustainable intensive agriculture is an appropriate tool to select the land suitable for agricultural production with the least economic and environmental costs. This study was conducted to evaluate the agricultural soil quality in the northeast area of Tadla plain (Morocco) using geographic information system (GIS) and analytical hierarchy process (AHP). Six soil quality indicators, i.e., pH, organic carbon, cation exchange capacity, texture, salinity and slope were considered and performed in 60 subsurface soil samples. AHP method was utilized to identify the weight of each indicator from the pairwise comparison matrix. The weighted sum overlay analysis was then used to generate the soil quality map in a GIS environment, by overlaying both indicator weights and sub-indicator weights. The studied area was classified into four soil quality categories, i.e., poor, medium, good, and excellent, the percentage of each category is 1.12, 20.98, 61.07 and 16.83%, respectively. The results indicated that 1.12% of the study area has poor suitability for sustainable intensive agriculture due to their unsuitable texture and low salinity, while about 77% of cultivated soils are adapted to agricultural production. The above results could be useful for the management of agricultural activity. 相似文献
7.
Wael Ahmed Mohamed Abdel Kawy Islam H. Abou El-Magd 《Arabian Journal of Geosciences》2013,6(7):2299-2311
Overpopulation and food security are the main global problems alert decision makers. In developing countries, such problem put extra pressure for horizontal expansion for agricultural development. The rapid sprawl of urbanized areas on the alluvial land of the River Nile and delta to accommodate the population growth has encouraged governmental and private sector for agricultural expansion in the desert. Unless there are reliable information and accurate studies for land and soil suitability, there will be a collapse of such investment. To evaluate the potential suitability of soil for agriculture development in areas of the western desert, satellite images, geographic information, and field survey including soil profiles and artesian water samples with laboratory analysis were integrated to classify the soils according their suitability for specific crop. The main land qualities of the different mapping units and the crop requirement were rated and matched to obtain the current and potential land suitability using Automated Land Evaluation System “ALES”. The study found that the main physiographic units are plateaus, hilland, mountain, and depression floor. But there are three limiting parameters for land suitability which are the lack of nutrient elements, wind erosion vulnerability, and soil texture. The study concluded that the best crops adapted with the soil conditions and could be feasible for economic use are: (1) native vegetation such as agol, sand trees, sammar, halfaa, bawaal, qordaob, bardi, and qortom; (2) filed crops such as onion, garlic, watermelon and wheat; and (3) fruits such as olive and date palms. 相似文献
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R. L. Watkins 《GeoJournal》1997,43(3):229-239
An analysis of the physical characteristics of an established wine region in eastern California, USA was undertaken to discern if a unique combination of environmental parameters in Zinfandel vineyards could be quantitatively identified. Development of a geographic information system (GIS) method to assess land suitability for current and potential viticultural regions in a Mediterranean-type climate is the primary focus. The assessment is based on spatial frequency distributions of measurable environmental criteria derived from characteristics of existing vineyards. In fact, statistically significant differences were found at the 95% confidence interval for 6 variables, and at the 85% confidence interval for an additional 3 variables. Thus 9 of the 15 variables analyzed (53%) were discriminated statistically between the vineyard and non-vineyard areas. The findings of this study illustrate the potential of GIS techniques for viticultural land suitability analysis, while supporting and contributing to the literature on the significance of soil and topographic characteristics in viticulture. 相似文献
10.
基于东北黑土地1∶250 000土地质量地球化学调查数据,按照《土地质量地球化学评价规范》和《土壤环境质量农用地土壤污染风险管控标准（试行）》,对讷河市土壤养分、土壤环境质量、土壤综合质量及绿色产地适宜性进行评价. 结果显示讷河市土地肥沃,环境清洁,适合于发展绿色农业：1）土壤养分单指标N、P、K、有机质、CaO、MgO、Fe2O3、S、B、Zn、Mn、Cu、Mo、Co、Ge、V共16项中,除Cu、Zn为较缺乏和Ge、B缺乏外,其他指标均为丰富和较丰富;土壤养分综合等级以较丰富和中等为主,分布面积分别为3 666.74 km2和2 574.11 km2,占全区面积的56.94%和39.97%. 2）土壤环境质量以一等（无风险）为主,一等区面积6 435.78 km2,占全区面积的99.94%;二等（风险可控）区面积仅4 km2,占0.06%. 3）全区土壤质量综合等级以优质为主,优质土壤面积3 806.06 km2,占全区面积的59.11%;良好级土壤面积2 574.11 km2,占39.97%;中等级土壤面积59.61 km2,占0.92%;没有四等（差等）和五等（劣等）土壤. 4）符合一级绿色食品产地的土壤面积为6 461.5 km2,占全区面积的97.5%;符合二级绿色食品产地的土壤面积为38.1 km2,占全区面积的0.58%;不符合绿色食品产地的土壤面积为65.6 km2,占全区面积的0.99%. 相似文献
11.
K. Narendra K. Nageswara Rao P. Swarna Latha 《Journal of the Geological Society of India》2013,81(2):248-260
This paper mainly deals with the integrated approach of remote sensing and Geographical Information System (GIS) to delineate groundwater prospective zones in Narava basin, Visakhapatnam region. The various thematic maps generated for delineating groundwater potential zones are geomorphology, geology, lineament density, drainage density, slope and land use/land cover (LULC). Weighted index overlay (WIO) technique is used to investigate a number of choice possibilities and evaluate suitability according to the associated weight of each unit. The integrated map of the area shows different zones of groundwater prospects, viz. very good (18.9% of the area), good (26.4% of the area), moderate (17.1% of the area) and poor (37.6% of the area). The categorization of groundwater potential was in good agreement with the available water column in the basin area. 相似文献
12.
长江经济带土壤质量评价及产地适宜性初步研究 总被引：1，自引：0，他引：1
开展土壤质量评价对科学划定永久基本农田及统筹优化农业生产布局具有重要指导意义。本文采用内梅罗综合污染指数法、分级法、累积频率法和综合判定法,参照《土壤环境质量农用地土壤污染风险管控标准》(试行)(GB 15618—2018)和《绿色食品产地环境质量》(NY/T 391—2013),对长江经济带土壤重金属污染、酸碱度、有益元素丰缺和绿色农产品产地适宜性进行评价。研究区土壤质量总体良好,清洁土壤面积34.84万km2,其重金属含量继承了自然背景特征; 三级及以下土壤面积6.94万km2,呈斑块及星点状分布于赣东北、赣南、湖南长沙—郴州一带、沿江及贵阳、昆明等地,其重金属为自然富集或受矿业开发、煤炭和石油的燃烧及工业“三废”排放的影响。酸性土壤面积33.56万km2,分布于江西、湖南、宁波—台州沿海和金华衢州盆地,碱性土壤面积15.69万km2,分布于苏北平原、环洞庭湖、成都平原以及沿长江一线,其土壤酸碱度与土壤类型有关。土壤有益元素丰缺与第四系沉积物成土母质有关,土壤有益元素适量及以上区域面积34.44万km2,分布于四川阿坝、成都盆地、环洞庭湖、环鄱阳湖、安徽沿江、苏北沿海和杭嘉湖平原; 土壤有益元素缺乏区面积13.89万km2,分布于赣南、江淮、鄂东北以及云南玉溪等地。绿色农产品产地最适宜区、适宜区和不适宜区面积分别为22.49万km2、18.78万km2和18.28万km2。依据区内绿色农产品产地适宜性、土壤环境质量和立地条件划分出7片永久农田保护建议区。 相似文献
13.
开展土壤质量评价对科学划定永久基本农田及统筹优化农业生产布局具有重要指导意义。本文采用内梅罗综合污染指数法、分级法、累积频率法和综合判定法,参照《土壤环境质量农用地土壤污染风险管控标准》(试行)(GB 15618—2018)和《绿色食品产地环境质量》(NY/T 391—2013),对长江经济带土壤重金属污染、酸碱度、有益元素丰缺和绿色农产品产地适宜性进行评价。研究区土壤质量总体良好,清洁土壤面积34.84万km2,其重金属含量继承了自然背景特征; 三级及以下土壤面积6.94万km2,呈斑块及星点状分布于赣东北、赣南、湖南长沙—郴州一带、沿江及贵阳、昆明等地,其重金属为自然富集或受矿业开发、煤炭和石油的燃烧及工业“三废”排放的影响。酸性土壤面积33.56万km2,分布于江西、湖南、宁波—台州沿海和金华衢州盆地,碱性土壤面积15.69万km2,分布于苏北平原、环洞庭湖、成都平原以及沿长江一线,其土壤酸碱度与土壤类型有关。土壤有益元素丰缺与第四系沉积物成土母质有关,土壤有益元素适量及以上区域面积34.44万km2,分布于四川阿坝、成都盆地、环洞庭湖、环鄱阳湖、安徽沿江、苏北沿海和杭嘉湖平原; 土壤有益元素缺乏区面积13.89万km2,分布于赣南、江淮、鄂东北以及云南玉溪等地。绿色农产品产地最适宜区、适宜区和不适宜区面积分别为22.49万km2、18.78万km2和18.28万km2。依据区内绿色农产品产地适宜性、土壤环境质量和立地条件划分出7片永久农田保护建议区。 相似文献
14.
In most large and fast growing urban areas, finding suitable lands for construction of landfill is one of the serious problems in environmental management. Land fill site selection process depends on different factors, regulations and constraints. Ignoring each of these parameters may cause miscalculations and lead to selection of an inappropriate landfill site which could have negative environmental, economical, and ecological impacts. Therefore, this process must be accomplished by taking into account all of the related criterions and variables. In this study, landfill site selection is performed by combining geographic information system (GIS) and analytical hierarchy process (AHP) in Hamedan province, west of Iran. In relation to landfill site selection, ten different criteria including Geology, surface water, aquifer, land use, elevation, slope, and distance to main roads, residential areas, faults and sinkholes were investigated. Using AHP each criterion was weighted, then geographic information system (Arc GIS 9.3 software) was used to manipulate and present spatial data. Finally, suitability map was prepared by overlay analyses and most suitable and suitable areas were identified and checked in field. The results indicate that 60.4 % of the area in the Hamedan province (11,631 km2) is unsuitable, 33 % (6,257.7 km2) moderately suitable and 6.6 % (1,344 km2) most suitable for construction of landfill. 相似文献
15.
A. Mendas A. Delali M. Khalfallah L. Likou M. A. Gacemi H. Boukrentach A. Djilali R. Mahmoudi 《Arabian Journal of Geosciences》2014,7(2):435-445
The weighted sum already incorporated into a geographical information system (GIS) makes it possible to identify the best lands useful for sustainable agriculture. However, it does not allow for the inclusion of the decision makers’ preferences so that a choice can be made when there are conflicts between decision makers. Because of their spatial aggregation functions, multicriteria decision analysis methods can facilitate decision making in situations where several solutions are available, various criteria have to be taken into account, and decision makers disagree about one point or another. Combinations between ArcGIS and multicriteria analysis methods in this case Elimination Et Choix Traduisant la Realité (ELECTRE TRI) and a version of the weighted sum method simple additive weighting, applicable to the vector data model, have been established. The parameters and the classification system of Food and Agriculture Organization are used in this work. This approach has been tested on the area of Mleta in Algeria. Land suitability maps for durum wheat have been produced. Through the comparison between results obtained by these two methods and those available in a classical method, based on manual overlay procedures, it appears that optimistic procedure of the ELECTRE TRI method is better suited to the problem of land suitability for agriculture. 相似文献
16.
In Kenya the government is promoting diversification of crops to embrace high value crops and drought resistant crop varieties
in efforts to reduce poverty in rural areas. Sugar beet is one of the crops considered as an option in this context and it
is therefore important to increase knowledge about the potentials in the country for cultivating this crop. Sugar beet trials
conducted in Nyandarua and Butere Mumias Districts of Kenya have shown that the crop yields are comparable to those obtained
in traditional sugar-beet cultivation regions of Europe. Since sugar beet yield is affected by climate and soils, the results
of Nyandarua and Butere Mumias sugar beet trials are not adequate to propose that comparable yields can be obtained elsewhere
in the country and other tropical regions. Physical land evaluations assessing the potentials and constraints for sugar beet
production are therefore essential. The objectives of this study was to develop a Tropical Sugar Beet Land Evaluation Scheme
(TSBLES) that can aid assessment of the suitability of different areas in the tropics for sugar beet cultivation; and to test
this scheme for an assessment of suitable sugar beet zones and land areas in Kenya. The development of the scheme was based
on various literature sources and expert judgment on sugar beet requirements, and a Tropical Sugar Beet yield prediction Model.
The TSBLES accounts for physical conditions of land i.e. climatic, edaphic and topographic conditions. According to the assessment
results 27% of the land area in Kenya is suitable for sugar beet cultivation. Of this area, 5% is highly suitable, another
5% is moderately suitable and 17% is marginally suitable. Most of the highly suitable land area is concentrated in Rift Valley,
Central and Nyanza provinces. The Rift Valley has the highest share of the suitable land area. 相似文献
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昭觉县是大凉山腹地的典型彝族聚居县,也是国家级深度贫困县,以传统农业居多,为推动农业发展方式的转变,昭觉县开展了现代农业园建设。笔者通过无人机航测,获取了拟建园区的高分辨率影像,使用面向对象的影像分析软件,快速提取了土地利用现状等信息,结合收集的其他资料,筛选了坡度、坡向、断层、地质灾害、土地利用、灌溉、交通、自然保护区8个评价因子,在GIS的支持下,先开展单因子土地适应性评价,然后进行综合评价。结果显示：拟建园区土地适宜性以适宜性高和适宜性较高等级为主,二者合计2.56 km2、占79.26%,超过3/4,土地适宜性好,适宜建设现代农业产业园,适合建设标准化蔬菜温室大棚和露地蔬菜种植基地,建成后,不但可以为周边地市提供蔬菜供应,还可带动园区周围农户增收,促进周围农户脱贫,发展前景好。小型无人机遥感系统具有机动灵活、成本低的优势,能快速获取小区域、大尺度农业产业园区的基础数据,在西南地区小区域土地适宜性评价中应用效果好。小区域土地的自然环境与社会环境相对单一,许多大区域土地适宜性评价指标并不完全适用,需要根据土地利用的主要目的选择合适的评价指标。 相似文献
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During the last three decades, remotely sensed data (both satellite images and aerial photographs) have been increasingly used in groundwater exploration and management exercises. An integrated approach has been adopted in the present study to delineate groundwater recharge potential zones using RS and GIS techniques. IRS-1C satellite imageries and Survey of India toposheets are used to prepare various thematic layers viz. geology, soil, land-use, slope, lineament and drainage. These layers were then transformed in to raster data using feature to raster converter tool in ArcGIS 9.3 software. The raster maps of these factors are allocated a fixed score and weight computed from Influencing Factor (IF) technique. The weights of factors contributing to the groundwater recharge are derived using aerial photos, geology maps, a land use database, and field verification. Subjective weights are assigned to the respective thematic layers and overlaid in GIS platform for the identification of potential groundwater recharge zones within the study area. Then these potential zones were categories as ‘high’, ‘moderate’, ‘low’, ‘poor’. The resulted map shows that 19 % of the area has highest recharge potential, mainly confined to buried pediplain, agriculture land-use and river terraces (considerable amount of precipitated water percolates into subsurface), 28 % of the area has moderate groundwater recharge potentiality and rest of the area has low to poor recharge potentiality. The residual hills and linear ridges with steep slopes are not suitable for artificial recharge sites. Finally, 13 % of total average annual precipitated water (840 mm) percolates downward and ultimately contributes to recharge the aquifers in the Kovilpatti Municipality area. The paper is an attempt to suggest for maintaining the proper balance between the groundwater quantity and its exploitation. 相似文献