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摘要： 春尺蠖虫害近年在新疆天然胡杨林区暴发成灾，严重威胁天然胡杨林的生存和绿色屏障功能的发挥。由于胡杨林面积大且胡杨树体高大，传统监测方法难以满足对胡杨林春尺蠖虫害进行快速监测的需求。以新疆巴楚县夏马勒林场为研究区，通过2014年至2017年上半年MODIS数据重构了NDVI时间序列数据集，并采用滤波技术进一步拟合了NDVI时间序列曲线。对比分析了3种滤波方法的效果，发现S\|G滤波在拟合的同时较好的保留了原始曲线的细节，且全局拟合能较好地减弱异质性，使得植被覆盖空间连续性较好。通过飞机防治区样本点NDVI时间序列数据年际对比和与未飞防区样本点年内对比分析和突变点检测发现，飞机生物药剂喷洒手段针对春尺蠖病虫害有较明显防治效果，与地面虫口数量调查结果一致，且飞防效果具有一定延续性。研究结果表明通过胡杨林NDVI时间序列来监测分析春尺蠖病虫害可行。 关键词： 胡杨林;  MODIS NDVI;  TIMESAT;  春尺蠖灾害;  时间序列数据     Abstract: In recent years，the damage of Apocheima Cinerarius Erschoff in Xinjiang province has seriously threatened the survival and green barrier function of natural Populus euphratica.Due to the large coverage and high tree body of Populus euphratica，traditional monitoring methods are difficult to meet the requirement of rapid monitoring of pest.In this study，the NDVI time series data set of Xiamale forestry in Xinjiang Bachu was reconstructed from the MODIS data from 2014 to the first half of 2017，and the NDVI time series curves were further fitted by three filters.It is found that the S\|G filter can preserve more details of the original curve，and the global fitting can weaken the heterogeneity effectively，so that the vegetation coverage space is better.Through the analysis of the NDVI time series data of the aircraft control area and the comparison with catastrophe point of the non\|flight zone，it is found that the aircraft biological agent means has obvious and continual effects on the controlling of insect pests.proven by the investigation of pest’s population on the ground..The results showed that it was feasible to analyse the insect pests by using the time series of Populus euphratica NDVI.

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