| 喻素芳，韩明臣，王化儒，叶兵.基于NDVI 的阔叶红松林干扰识别与物候变化趋势分析[J].广东农业科学,2013,40(6):157-160 |
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基于NDVI 的阔叶红松林干扰识别与物候变化趋势分析 |
| Analysis of disturbance detection and phenological dynamics of broad-leaved Korean pine forest based on NDVI |
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| DOI： |
| 中文关键词: 阔叶红松林 物候 干扰 |
| 英文关键词: broad-leaved korean pine forest phenology disturbance |
| 基金项目:国家公益性行业渊林业冤科研专项（201104035） |
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| 摘要点击次数: 2118 |
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| 中文摘要: |
| 使用1982—2006 年长时间序列的GIMMS NDVI数据，基于BFAST 算法，对我国当前残存的分布最为集中的长白山自然保护区阔叶红松林进行植被干扰检测，在明晰干扰历史背景的前提下分析物候变化趋势，结果表明，长白山自然保护区阔叶红松林NDVI时间序列的季节组分和趋势组分均不存在间断变化，趋势组分也没有明显的上升或下降趋势，长白山自然保护区阔叶红松林中不存在对NDVI 产生影响的干扰，均保持在稳定状态。针对未受干扰的阔叶红松林进行物候变化趋势分析，结果表明，长白山自然保护区阔叶红松林生长季起始时间显著推迟（P<0.05），生长季结束时间无显著变化趋势，生长季长度显著缩短（P<0.0.5）。长白山自然保护区未受干扰的阔叶红松林生长季起始时间推迟可能是由年日照时数及日照百分率明显下降所致。 |
| 英文摘要: |
| With the long-term GIMMS NDVI time series from 1982 to 2006, the disturbance events in primary broad-leaved Korean
pine forests in Changbaishan natural reserve (CBS) were detected by the BFAST algorithm, and the trend of phenological dynamics was also analysed. The BFAST results showed that there were no abrupt changes in the seasonal components and the trend components of primary broad-leaved Korean pine forests in CBS, and there was also no increasing or decreasing trend in the trend components. The BFAST results implied that there were no disturbance events which had impact on NDVI and the primary broad-leaved Korean pine forests in CBS kept on steady state. The results of the trend analysis on the undisturbed forests showed that the start of growing season of the primary broad-leaved Korean pine forest in CBS delayed significantly (P<0.05), the end of growing season did not significantly change, and the length of growing season prolonged significantly (P<0.0.5). The delay of the start of growing season in CBS was probably caused by the remarkable decline of annual sunshine hours and percentage of sunshine. |
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