| 基于树木年轮的呼图壁河流域草地归一化植被指数重建 |
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| 引用本文： | 高卫东,袁玉江,张瑞波. 基于树木年轮的呼图壁河流域草地归一化植被指数重建[J]. 东北林业大学学报, 2012, 40(4): 26-30. DOI: 10.3969/j.issn.1000-5382.2012.04.007 |
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| 作者姓名： | 高卫东 袁玉江 张瑞波 |
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| 作者单位： | 1.济南大学 济南 250002;2.中国气象局树木年轮理化研究重点开放实验室(中国气象局乌鲁木齐沙漠气象研究所) |
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| 基金项目： | 国家自然科学基金,山东省自然科学基金,国家公益性行业(气象)科研专项,国家科技基础性工作专项,中国气象局新技术推广项目 |
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| 摘 要： | 利用天山北坡中部呼图壁河流域6个标准化年表,结合NOAA/AVHRR- NDVI资料提取研究区1981-2001年生长季草地各月最大INDV(归一化植被指数)值.结果表明:当年生长季草地最大INDv与树木年轮指数有较好的相关关系,夏末、秋初草地月最大INDV与树轮指数的相关性较好.将呼图壁河流域草地9月最大INDV与相关较好的3个标准化年表序列进行多元回归分析,重建了研究区1662-2001年9月草地最大INDV值,重建方程的相关系数达到0.86,重建值对实测值的方差解释量分别为73.0％,达到0.000012的显著性水平,重建结果是可靠的.
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| 关 键 词： | 树木年轮 归一化植被指数 呼图壁河流域 |
Reconstruction of Normalized Difference Vegetation Index of Grassland in Hutobi River Basin Based on TreeRing |
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| Gao Weidong , YuanYujiang , Zhang Ruibo. Reconstruction of Normalized Difference Vegetation Index of Grassland in Hutobi River Basin Based on TreeRing[J]. Journal of Northeast Forestry University, 2012, 40(4): 26-30. DOI: 10.3969/j.issn.1000-5382.2012.04.007 |
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| Authors: | Gao Weidong YuanYujiang Zhang Ruibo |
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| Affiliation: | (Key Laboratory of Tree-ring Physical and Chemical Research of China Meteorological Administration(Institute of Desert Meteorology,China Meteorological Administration)) |
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| Abstract: | Monthly maximum Normalized Difference Vegetation Index(NDVI) of grassland in Hutobi River Basin in growing season from 1981 to 2001 was extracted using six well-replicated standardized chronologies.Results show that the maximum NDVI in the current growing season has a good correlation with tree-ring index,and the maximum NDVI in late-summer and early-fall have a much stronger correlation with tree-ring index.The maximum NDVI of grassland in September from 1662-2001 was reconstructed by multiple regression analysis of the maximum NDVI in September and tree-ring standardized chronologies having a good correlation with the maximum NDVI.The correlation coefficient of the reconstruction equation is 0.86,and the reconstructed value of the explained variance to the measured values is 73.0%,reaching a significant level of 0.000 012.It indicates that the remote sensing data of NDVI from 1981-2001 and the reconstructed value has a good correlation. |
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| Keywords: | Tree-ring Normalized difference vegetation index Hutobi river basin |
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