2802 REMOTE SENSING INDICATORS FOR CROP GROWTH MONITORING AT DIFFERENT SCALES.ppt

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REMOTE SENSING INDICATORS FOR CROP GROWTH MONITORING AT DIFFERENT SCALES Zongnan Li 1, 2 and Zhongxin Chen 1, 2* 1 Key Laboratory of Resources Remote Sensing and Digital Agriculture, MOA, Beijing 100081 2 Institute of Agricultural Resources and Regional Planning, CAAS, Beijing 100081 IGARSS 2011, Vancouver, 24-29 July, 2011

Outline ,[object Object],[object Object],[object Object],[object Object]

Ⅰ . INTRODUCTION ,[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object]

Research Objectives ,[object Object],[object Object],[object Object]

field experiment canopy spectra crop parameters crop yield HJ-1 Imagery LAI in-situ Geom. Correction Atmos. Correction VIs VIs Correlation analysis Relationsip between VIs and crop growth VIs at different scales scaling up Correlation analysis LAI regional Relationsip between VIs and LAI at different scales

Field experiment plots in Langfang (116°36′E, 39°36′N). Regional study in Hebei province

Ⅱ . DATA AND PROCESS ,[object Object],5 levels for N fertilizer treatments; 4 times repeat N application treatments: N1- 0; N2- 15kg/ha; N3- 45 kg/ha; N4- 105 kg/ha; N5- 225kg/ha

Ⅱ . DATA AND PROCESS ,[object Object],canopy spectra, LAI, foliar chlorophyll, plant hight, coverage and biomass were measured at 5 phenological stages on 3/30, 4/14, 4/24, 5/5 and 5/17, 2009. Canopy spectra Canopy LAI Chlorophyll SPAD

Ⅱ . DATA AND PROCESS ,[object Object],early elongation stage jointing stage heading stage milk stage

LAI evolution for various N applications

HJ-1A CCD Image 3/25/2009 HJ-1A CCD Image 4/21/2009 Specification Bands (μm) Blue:0.43-0.52 Green:0.52-0.60 Red:0.63-0.69 infrared: 0.76-0.90 Swath 360×360km Resolution 30m

Ⅱ . DATA AND PROCESS ,[object Object],[object Object],[object Object],[object Object],[object Object]

LAI in study region March 25 (elongation) April 21 (heading)

Ⅲ . RESULT &DISCUSSION ,[object Object],[object Object],Date and Crop Stages 2009-3-30 2009-4-14 2009-5-5 2009-5-17 early elongation stage jointing stage heading stage milk stage NDVI 0.5173 * 0.8462 ** 0.8778 ** 0.9068 ** PVI 0.5484 * 0.6612 ** 0.7033 ** 0.8165 ** SAVI(L=0.1) 0.5060 * 0.8447 ** 0.8146 ** 0.8993 ** SAVI(L=0.2) 0.5494 * 0.8507 ** 0.7815 ** 0.8857 ** SAVI(L=0.3) 0.5680 * 0.8229 ** 0.7544 ** 0.8857 ** SAVI(L=0.5) 0.5504 * 0.8191 ** 0.7416 ** 0.8737 ** MSAVI 0.5504 * 0.8191 ** 0.7484 ** 0.8677 ** EVI 0.5504 * 0.8236 ** 0.7379 ** 0.8361 **

Ⅲ . RESULT &DISCUSSION ,[object Object],[object Object],good but no obvious trend Date 2009-3-25 early elongation stage 2009-4-21 heading stage Resolution 240m 480m 960m 240m 480m 960m PVI 0.9288 0.9362 0.9440 0.9592 0.9357 0.9536 SAVI(L=0.1) 0.9431 0.9504 0.9723 0.9697 0.9643 0.9665 SAVI(L=0.3) 0.9514 0.9486 0.9746 0.9689 0.9654 0.9686 SAVI(L=0.5) 0.9472 0.9474 0.9722 0.9689 0.9638 0.9700 MSAVI 0.9440 0.9446 0.9714 0.9685 0.9621 0.9674 EVI 0.9262 0.9582 0.9472 0.9400 0.9361 0.9499

Ⅲ . RESULT &DISCUSSION ,[object Object],[object Object],Date 2009-3-25 early elongation stage 2009-4-21 heading stage Resolution 240m 480m 960m 240m 480m 960m PVI 0.9261 0.9450 0.9799 0.5750 0.6512 0.7261 SAVI(L=0.1) 0.9536 0.9816 0.9943 0.9437 0.9512 0.9519 SAVI(L=0.3) 0.9456 0.9726 0.9898 0.8247 0.8349 0.8936 SAVI(L=0.5) 0.9394 0.9671 0.9888 0.7209 0.8006 0.8284 MSAVI 0.9408 0.9651 0.9877 0.7784 0.8260 0.8770 EVI 0.9125 0.9463 0.9639 0.7932 0.8072 0.8598

Ⅳ . CONCLUSION ,[object Object],[object Object],[object Object]

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2802 REMOTE SENSING INDICATORS FOR CROP GROWTH MONITORING AT DIFFERENT SCALES.ppt

1. REMOTE SENSING INDICATORS FOR CROP GROWTH MONITORING AT DIFFERENT SCALES Zongnan Li 1, 2 and Zhongxin Chen 1, 2* 1 Key Laboratory of Resources Remote Sensing and Digital Agriculture, MOA, Beijing 100081 2 Institute of Agricultural Resources and Regional Planning, CAAS, Beijing 100081 IGARSS 2011, Vancouver, 24-29 July, 2011

6. field experiment canopy spectra crop parameters crop yield HJ-1 Imagery LAI in-situ Geom. Correction Atmos. Correction VIs VIs Correlation analysis Relationsip between VIs and crop growth VIs at different scales scaling up Correlation analysis LAI regional Relationsip between VIs and LAI at different scales

7. Ⅱ . DATA AND PROCESS research region

8. Field experiment plots in Langfang (116°36′E, 39°36′N). Regional study in Hebei province

10.

11.

12. LAI evolution for various N applications

13. HJ-1A CCD Image 3/25/2009 HJ-1A CCD Image 4/21/2009 Specification Bands (μm) Blue:0.43-0.52 Green:0.52-0.60 Red:0.63-0.69 infrared: 0.76-0.90 Swath 360×360km Resolution 30m

14.

15.

16.

17. LAI in study region March 25 (elongation) April 21 (heading)

18. High crop cover Low crop cover Canopy

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20.

21.

22.

23.

24. Thanks for your attention !

2802 REMOTE SENSING INDICATORS FOR CROP GROWTH MONITORING AT DIFFERENT SCALES.ppt

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