| 引用本文： |
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周 辉，王卫东，李星敏，王 钊，权文婷.基于长时间序列NDVI的陕西省耕地复种指数遥感监测分析[J].大中文模板3,2014,(3):189-195. [点击复制]
- ZHOU Hui, WANG Wei-dong, LI Xing-min, WANG Zhao, QUAN Wen-ting.Remote sensing monitoring analysis for the multiple cropping index of the cultivated land in Shaanxi Province based on the long time-series NDVI[J].大中文模板3,2014,(3):189-195. [点击复制]
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| 摘要: |
| 复种指数反映了耕地的利用强度，利用遥感方法提取耕地复种指数可为农业产业结构调整和粮食安全保障提供科学依据。采用SPOT/VGT NDVI时序数据（2001—2007年）和MOD13Q1 NDVI时序数据（2001—2011年）作为遥感数据源，利用HANTS滤波和SG滤波方法分别对两种数据源进行数据重构，进而提取出陕西省10个地(市)的耕地复种指数；根据提取结果，分析各地市复种指数的变化规律，进而对比两种方法在耕地复种指数提取过程中的效果。结果表明：两种方法均能较好地反映复种指数的变化趋势；SG滤波后提取结果普遍高于HANTS滤波后提取结果；2001—2011年，延安市和榆林市复种指数增长较快，西安市复种指数出现负增长；2007年之后，铜川、宝鸡、咸阳、渭南复种指数开始出现负增长。 |
| 关键词: 复种指数 归一化植被指数（NDVI） HANTS滤波 SG滤波 遥感监测 陕西省 |
| DOI： |
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| 基金项目:陕西省农业科技创新项目(2012NKC01-19)；陕西省13115重大科技专项(2009ZDKG-08) |
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| Remote sensing monitoring analysis for the multiple cropping index of the cultivated land in Shaanxi Province based on the long time-series NDVI |
| ZHOU Hui1, WANG Wei-dong1, LI Xing-min2, WANG Zhao1, QUAN Wen-ting1 |
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| Abstract: |
| The multiple cropping index reflects the degree of arable land utilizing intensity at a certain period. Extracting multiple cropping index by remote sensing method could provide scientific basis for agricultural industrial structure adjustment and food security. We adopted the SPOT/VGT NDV
I time-series data (2001—2007) and MOD13Q1 NDVI time-series data (2001—2011) for the remote sensing data sources, reconstructed the data for these two data sources by using the HANTS filter and Savitzky-Golay filter method, and then extracted the multiple cropping indexes of 10 cities in Shaanxi Province. According to the extracted results, analyzed the variation rule of the multiple cropping index in each city, and then compared the effects of two methods for extracting the multiple cropping indexes. The result showed that: Both methods can be better reflected the change trend of the multiple cropping index. The extraction result of Savitzky-Golay filter was generally higher than the HANTS filter. The multiple cropping index was increased obvious quick in Yulin city and Yan’an city from 2001 to 2011, while the figures in Xi’an city has been shown a negative increase. After 2007, the multiple cropping indexes were begun to appear the negative increase in Tongchuan, Baoji, Xianyang and Weinan. |
| Key words: multiple cropping index normalized difference vegetation index HANTS filter Savitzky-Golay filter remote sensing Shaanxi Province |
