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GIS based land suitability assessment along Laos-China border 被引量:4
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作者 占达黑马万 吴次芳 +1 位作者 叶艳梅 Y.Ayumi 《Journal of Forestry Research》 SCIE CAS CSCD 2010年第3期343-349,398,共8页
Assessment of the forest land use change and proposed land suitability for tea for the area along Laos – China Border were the main purpose of this research paper. An integrated GIS-based analysis system (IGAS), su... Assessment of the forest land use change and proposed land suitability for tea for the area along Laos – China Border were the main purpose of this research paper. An integrated GIS-based analysis system (IGAS), supporting assessment of forest land-use and land suitability for the study area where along Laos-China border was developed. Multi criteria analysis and system dynamics techniques were used to assess forest land use and land suitability and to forecast potential land-use for tea. The total study area is estimated at 10 325.07 km2 according to the field data collection and data analysis. The area of current forest cover decreased rapidly from 6337.33 km2 (61.38%) in 1992 to 5106.28 km2 (49.46%) in 2002 in the study area. The current forest was mainly trans-ferred to potential forest and permanent agriculture especially to rubber plantation areas even in the National Conservation Biodiversity Conser-vation Areas. The main causes of forest land use change are poverty. In order to address the problems, land suitability classification for tea was developed based on the multi-criteria. And finally two options of land suitability classification for tea for the study areas were developed. 展开更多
关键词 FOREST Land evaluation Phongsaly Laos TEA
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老挝丰沙里省新寨铜矿土壤地球化学特征 被引量:2
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作者 刘慧鹏 王芳 +1 位作者 钱雷云 李福 《世界有色金属》 2017年第4期179-181,共3页
本文对老挝丰沙里省新寨铜矿的地质情况及工作区内景观地球化学特征进行了简述。根据对本工作区内1/2.5万土壤地球化学测量资料的分析,对本区各地层元素含量特征与区域地层整体特征进行了对比,发现本工作区内Cu、Ag、Pb、Zn、As、Sb元... 本文对老挝丰沙里省新寨铜矿的地质情况及工作区内景观地球化学特征进行了简述。根据对本工作区内1/2.5万土壤地球化学测量资料的分析,对本区各地层元素含量特征与区域地层整体特征进行了对比,发现本工作区内Cu、Ag、Pb、Zn、As、Sb元素较为富集,Au元素整体较弱。描述了工作区内的单元素异常特征,根据土壤中各单元素异常的组合情况圈定了综合异常,并对各综合异常的找矿潜力进行了分析。 展开更多
关键词 老挝丰沙里省 土壤地球化学测量
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老挝丰沙里新寨铜矿物探试验性工作分析
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作者 钱雷云 李福 方中有 《世界有色金属》 2017年第6期64-66,共3页
了解勘查区的地球物理特征并据此开展物探方法试验性工作,是合理选择该区域适当的物探工作方法的前提,以达到增强找矿效果、降低勘查成本的目的。笔者在老挝丰沙里新寨铜矿开展了激电中梯、高频大地电磁试验工作,激电中梯在已知矿体上... 了解勘查区的地球物理特征并据此开展物探方法试验性工作,是合理选择该区域适当的物探工作方法的前提,以达到增强找矿效果、降低勘查成本的目的。笔者在老挝丰沙里新寨铜矿开展了激电中梯、高频大地电磁试验工作,激电中梯在已知矿体上表现为明显的高极化率特征,高频大地电磁测深工作根据电阻率差异对深部岩层界线进行了划分。其试验效果可为周边开展物探工作提供参考依据。 展开更多
关键词 老挝丰沙里省 激发极化法 高频大地电磁测深
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