| 基于Terra和NPP卫星的NDVI产品在呼伦贝尔地区植被监测中的对比 |
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| 引用本文： | 曲学斌,吴昊,红梅,辛孝飞,吕淼.基于Terra和NPP卫星的NDVI产品在呼伦贝尔地区植被监测中的对比[J].新疆气象,2023,17(4):132-138. |
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| 作者姓名： | 曲学斌 吴昊 红梅 辛孝飞 吕淼 |
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| 作者单位： | 呼伦贝尔市气象局,呼伦贝尔市气象局,呼伦贝尔市气象局,呼伦贝尔市农牧局,呼伦贝尔市气象局 |
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| 基金项目： | 内蒙古自治区自然科学基金项目(2018MS04005)、中华环境保护基金会青山公益专项基金（CEPFQS2021169-28）、中国气象局气候变化专项（CCSF202025）、内蒙古自治区气象局创新项目（nmqxkjcx202102） |
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| 摘 要： | 为了探索基于多源卫星产品组建长时间序列NDVI并开展生态监测与灾害评估的可能性，利用相关系数、均方根误差、标准差和平均偏差等方法，结合泰勒图，对呼伦贝尔地区2012—2021年基于Terra和NPP卫星逐16 d的NDVI产品进行比较。结果表明：NPP/NDVI的多年均值略高于Terra/NDVI，两者在草原植被类型下的一致性最优，其次为耕地，森林植被的一致性较差。在呼伦贝尔非植被生长季，Terra/NDVI与NPP/NDVI的偏差主要集中在森林，且以Terra/NDVI偏高为主。在植被生长季初期2种NDVI产品的偏差呈现零散、随机分布，中期的偏差相对较小，生长季后期则以Terra/NDVI小于NPP/NDVI的负偏差为主。虽然2种卫星产品的总体偏差不大，但在开展NDVI的距平分析或计算VCI等指数时，较小的偏差会被放大。呼伦贝尔草地在考虑两种NDVI产品偏差纠正的前提下基本可替代使用，而耕地、林地植被的协同应用仍需谨慎。
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| 关 键 词： | NPP/VIIRS Terra/MODSI NDVI 呼伦贝尔 植被监测 对比分析 |
| 收稿时间： | 2022/5/27 0:00:00 |
| 修稿时间： | 2022/8/28 0:00:00 |
Comparison of NDVI products based on Terra and NPP satellites in Hulunbuir |
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| QU Xuebin,WU Hao,HONG Mei,XIN Xiaofei and LV Miao.Comparison of NDVI products based on Terra and NPP satellites in Hulunbuir[J].Bimonthly of Xinjiang Meteorology,2023,17(4):132-138. |
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| Authors: | QU Xuebin WU Hao HONG Mei XIN Xiaofei and LV Miao |
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| Institution: | Hulun Buir Meteorological Bureau,Hulun Buir,Inner Mongolia,Hulun Buir Meteorological Bureau,Hulun Buir,Inner Mongolia,Hulun Buir Meteorological Bureau,Hulun Buir,Inner Mongolia,Hulunbeier Bureau of Agriculture and Animal Husbandry,Hulun Buir,Hulun Buir Meteorological Bureau,Hulun Buir,Inner Mongolia |
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| Abstract: | In order to explore the possibility of establishing long-series NDVI based on multi-source satellite products and carrying out ecological monitoring and disaster assessment, NDVI products were compared by correlation coefficient, root mean square error, 2012-2021 by 16 d for Terra and NPP satellites and standard deviation and average deviation, combined with Taylor diagram. The results show that the multiannual mean of NPP/NDVI is slightly higher than that of Terra/NDVI, with the best agreement among grassland vegetation types, followed by cultivated land, and poor agreement among forest vegetation types. In the Hulun Buir Terra growth season, the deviation between Terra/NDVI and NPP/NDVI was mainly concentrated in the forest, and was dominated by high Terra/NDVI. In the beginning of the vegetation growth season, the deviation of the two NDVI products is scattered and random, while the deviation in the middle season is relatively small. In the late growth season, the negative deviation of Terra/NDVI is less than that of NPP/NDVI. Although the overall bias of the 2 satellite products is small, the smaller bias is amplified when conducting a leveling analysis of NDVI or calculating indices such as VCI. Hulun Buir grassland can be basically replaced under the premise of considering the deviation correction of the two NDVI products, while the collaborative application of cultivated land and woodland vegetation still needs to be cautious. |
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| Keywords: | NPP/VIIRS TERRA/MODSI NDVI Hulun Buir vegetation monitoring Comparative analysis |
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