科学计量视角下的荒漠化研究热点
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王琨, 淮孟姣
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Analysis on the hotpots of desertification from the perspective of scientometrics
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Kun Wang, Mengjiao Huai
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表2 荒漠化研究文献关键词出现频率情况
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Table 2 List of occurrence frequency of keywords in desertification research literature
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| 年份 | 序号 | 关键词 | 频次 | 年份 | 序号 | 关键词 | 频次 |
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第一阶段 1992—2002年 | 1 | desertification | 84 | 第二阶段 2003—2011年 | 7 | Soil Erosion | 17 | | 2 | erosion | 11 | 8 | GIS | 15 | | 3 | land degradation | 11 | 9 | wind erosion | 15 | | 4 | climate change | 9 | 10 | grazing | 12 | | 5 | remote sensing | 8 | 11 | restoration | 12 | | 6 | grazing | 7 | 12 | soil properties | 11 | | 7 | overgrazing | 7 | 第三阶段 2012—2019年 | 1 | desertification | 192 | | 8 | land use | 6 | 2 | land degradation | 57 | | 9 | runoff | 6 | 3 | Climate change | 46 | | 10 | soil erosion | 6 | 4 | Remote sensing | 45 | | 11 | infiltration | 5 | 5 | NDVI | 30 | | 12 | rangelands | 5 | 6 | Land use | 24 | | 13 | Sahel | 5 | 7 | Karst | 23 | | 14 | wind erosion | 5 | 8 | Soil erosion | 23 | 第二阶段 2003—2011年 | 1 | desertification | 173 | 9 | GIS | 22 | | 2 | land degradation | 61 | 10 | drylands | 19 | | 3 | China | 34 | 11 | degradation | 17 | | 4 | remote sensing | 29 | 12 | ecological restoration | 17 | | 5 | climate change | 25 | 13 | Soil organic carbon | 17 | | 6 | erosion | 19 | 14 | Wind erosion | 17 |
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