| 气候变化及人类活动对黄河流域植被覆盖变化的影响 |
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| 引用本文： | 刘海,刘凤,郑粮.气候变化及人类活动对黄河流域植被覆盖变化的影响[J].水土保持学报,2021,35(4):143-151. |
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| 作者姓名： | 刘海 刘凤 郑粮 |
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| 作者单位： | 1. 湖北大学资源环境学院, 武汉 430062;2. 武汉大学测绘遥感信息工程国家重点实验室, 武汉 430079 |
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| 基金项目： | 国家自然科学基金项目（41971402）；国家重点研发计划项目（2018YFC1506500） |
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| 摘 要： | 黄河流域在我国具有重要的战略地位,是我国重要的生态屏障,定量化评估气候变化和人类活动对黄河流域植被变化影响,对政府管理决策具有重要意义。以黄河流域为研究区,分析1982—2019年归一化植被指数(normalized difference vegetation index, NDVI)时空动态变化,定量计算气候变化及人类活动对NDVI变化的贡献度,并对NDVI变化影响因素进行分区制图;在此基础上,讨论生态建设工程对植被变化的影响情况,并评估其成效。结果表明:(1)1982—2019年间黄河流域NDVI呈现显著增加趋势,变化趋势为0.002 4/a;空间上,显著退化的区域分布在流域西部和南部,显著增加的区域分布在流域中部和北部。(2)黄河流域植被变化是气候因素和人类活动共同作用的结果,研究时段内气候因素对NDVI变化的贡献度为82.74%,人类活动贡献度为17.62%,气候因素是黄河流域植被变化的主导因素,但人类活动在植被变化中的影响程度逐渐加深。(3)3个生态建设工程区植被恢复情况为三北防护林黄河中游防护林太行山绿化,生态建设工程对植被恢复有明显的促进作用。
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| 关 键 词： | 黄河流域 NDVI 气候变化 人类活动 生态建设工程 |
| 收稿时间： | 2021/2/25 0:00:00 |
Effects of Climate Change and Human Activities on Vegetation Cover Change in the Yellow River Basin |
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| LIU Hai,LIU Feng,ZHENG Liang.Effects of Climate Change and Human Activities on Vegetation Cover Change in the Yellow River Basin[J].Journal of Soil and Water Conservation,2021,35(4):143-151. |
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| Authors: | LIU Hai LIU Feng ZHENG Liang |
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| Institution: | 1. Faculty of Resources and Environmental Science, Hubei University, Wuhan 430062;2. State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079 |
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| Abstract: | The Yellow River Basin has an important strategic position and is an important ecological barrier in China. Quantitative assessment of the impact of climate change and human activities on vegetation change in the Yellow River Basin is of great significance to government management and decision-making. Taking the Yellow River Basin as the research area, the temporal and spatial dynamic changes of normalized difference vegetation index (NDVI) from 1982 to 2019 were analyzed, the contributions of climate change and human activities on NDVI were quantitatively calculated, and the influencing factors of NDVI were mapped. On this basis, the impact of ecological construction project on vegetation change was discussed, and its effectiveness was evaluated. The results showed that: (1) From 1982 to 2019, the NDVI of the Yellow River Basin showed a significant increasing trend, with a change trend of 0.002 4/a. The regions with significant degradation in NDVI were distributed in the west and south of the basin, and the regions with significant increase in NDVI were distributed in the middle and north of the basin. (2) Vegetation change in the Yellow River Basin was the result of the joint action of climate factors and human activities. The contribution of climate factors to NDVI change was 82.74%, and the contribution of human activities was 17.62%. Climate factors were the dominant factors of vegetation change in the Yellow River Basin, but the influence of human activities in vegetation change was gradually increasing. (3) The vegetation restoration of the three ecological construction projects followed the order of the Three-North Shelter Forest Program>Shelter Forest Belt Project in Middle Reach of the Huanghe River>Afforestation of Taihang Mountain, and the ecological construction project played a significant role in promoting vegetation restoration. |
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| Keywords: | Yellow River Basin NDVI climate change human activities ecological construction project |
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