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Analysis on Status and Development Trend of Wind Erosion in Black Earth Region of Northeast China 被引量:2
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作者 刘铁军 珊丹 +2 位作者 郭建英 高天明 赵显波 《Agricultural Science & Technology》 CAS 2011年第12期1925-1928,共4页
In this paper,areas and main factors of wind erosion in black earth region of Northeast China were systematically analyzed,as well as the development trend of wind erosion in black earth region of Northeast China.In a... In this paper,areas and main factors of wind erosion in black earth region of Northeast China were systematically analyzed,as well as the development trend of wind erosion in black earth region of Northeast China.In addition,development trend of wind erosion in black earth region of Northeast China was analyzed from the aspects of the geographic position,climatic change law in recent 40 years and effects of northeast sand land desertification on wind erosion in black earth region,which had provided references for the research and prevention of wind erosion in soil of black earth region of Northeast China. 展开更多
关键词 Black earth region of Northeast China Wind erosion water loss and soil erosion Wind erosion factors
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Dynamic analysis of mainstream area and vegetation coverage degree of Songhua River based on RS and GIS techniques
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作者 CHANG Cheng ZHANG Yuanqing ZHU Cong 《Global Geology》 2012年第1期66-73,共8页
Based on remote sensing technique,using 1990's Landsat TM data and 2000's Landsat ETM data,the authors conducts the comparative study of mainstream area of Songhua River by means of human-computer inter-action... Based on remote sensing technique,using 1990's Landsat TM data and 2000's Landsat ETM data,the authors conducts the comparative study of mainstream area of Songhua River by means of human-computer inter-action method.The results show that the area of Songhua River mainstream was 738 102 km 2 in 1990,and was 810.451 km 2 in 2000.From 1990 to 2000,the increased area of river mainstream is up to 72.349 km2 due to soil erosion and water loss.Meanwhile,the dynamic changes of surrounding vegetation cover are also studied.It is estimated that the trend of surrounding soil erosion and water loss of Songhua River mainstream becomes worse in Jilin Province. 展开更多
关键词 water loss and soil erosion vegetation cover RS GIS Songhua River mainstream
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Research of Ecological Restoration of Jari Agricultural Demonstration Site in Ethiopia
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作者 汪洋 胡先祥 +2 位作者 阮维桢 陈林 尹茜 《Agricultural Science & Technology》 CAS 2013年第2期389-392,共4页
In order to resolve the issue of soil erosion in East African plateau, a micro-landscape irrigation region was established in Ethiopia plateau to research status quo of agricultural demonstration site in Jari in Ethio... In order to resolve the issue of soil erosion in East African plateau, a micro-landscape irrigation region was established in Ethiopia plateau to research status quo of agricultural demonstration site in Jari in Ethiopia and to analyze the relation between structure and function of inner elements in different landscapes of demonstration site. Furthermore, in accordance with ecology, silviculture, agriculture and economics, the ecological landscapes were classified as per landscape functions; lands returning from farming were classified and re-used; ecosystems of grassland, river, agriculture and courtyard were researched; the feasibility of ecological restoration and sustainable development in demonstration site was demonstrated; the model for rational irrigation and water conservation was proposed. The research guarantees sustainable development of agriculture and animal husbandry and provides references for undeveloped countries with similar problems. 展开更多
关键词 water loss and soil erosion Ecological restoration Demonstration site Sustainable development
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