Selection of Multi-Temporal Scenes for the Selection of Multi-Temporal Scenes for the Mississippi Cropland Data Layer, 2004Mississippi Cropland Data Layer, 2004

 Rick Mueller

Research and Development DivisionNational Agricultural Statistics Service

Fairfax, VA, USA

Acknowledgements: Commissioner Lester Spell, Jr., D.V.M., MDAC,Dr. Joseph H. McGilberry, Director, Mississippi Cooperative Extension Service, James

Brown, Mississippi Department of Transportation, and the USDA Field Enumerators in

Mississippi were critical to the success of this project.

Thomas L. GregoryNational Agricultural Statistics Service

Jackson, MS, USA

Fred L. Shore, Ph.D.Mississippi Department of Agriculture and Commerce

Jackson, MS, USAfred_shore@nass.usda.gov

The Cropland Data Layer in The Cropland Data Layer in MississippiMississippi

• Based on USDA/NASS programs started in the 1970s and the LARSYS software from Purdue University.

• Mississippi project started in 1999 using the Peditor and RSP software programs of NASS

• A cooperative project of NASS, Mississippi State University, and the Mississippi Department of Agriculture and Commerce

Data Collection for the MS 2004 Data Collection for the MS 2004 Cropland Data LayerCropland Data Layer

• June Agricultural Survey Area Frame sample selection of 356 segments by strata, generally 1 square mile per segment.

• June Agricultural Survey field observations.

• Landsat 5 satellite imagery scenes with little or no clouds.

Clouds, March 3, 2004 Clouds, March 3, 2004

The MS Delta, April 4, 2004The MS Delta, April 4, 2004

June Agricultural June Agricultural Survey Survey

Segment SelectionSegment Selection

Mississippi Mississippi Data CollectionData Collection

Segment Locator Map and Segment Locator Map and Field LocationsField Locations

Scene Selection for MS Scene Selection for MS 20042004

(Possible Delta ADs Shown in Red)(Possible Delta ADs Shown in Red)Analysis District Primary Scene Secondary Scene

AD0123360-40404 23360-4050623370-40404 23370-4050623380-40404 23380-40506

AD0221360-40406 21360-4050821370-40406 21370-4050821380-40406 21380-4050821390-40406 21390-40508

AD0623360-40927 23360-4040423370-40927 23370-4040423380-40927 23380-40404

AD0722360-4092022370-4092022380-4092022390-40920

AD0823360-40506 23360-4092723370-40506 23370-4092723380-40506 23380-40927

Multi-Temporal Crop SignaturesMulti-Temporal Crop Signatures

• Computer processing using Peditor and RSP.

• Use of two Landsat 5 scenes of different dates with 7 bands each.

• Use of the ground truth data.

• Clustering the crop signatures and training the classifier. • Comparison of statistics of 3 possible analysis districts to

select the best classification for the MS Delta.

Multi-Temporal Classification StatisticsMulti-Temporal Classification Statisticsto Select the Analysis District to Select the Analysis District

for the MS Delta, 2004for the MS Delta, 2004

Analysis

DistrictDates

Percent Correct (%) Commission Error (%)

Overall

Cotton Soybeans Rice Cotton Soybeans Rice

4/4/2004 and 5/6/2004 9/27/2004 and 4/4/2004 5/6/2004 and 9/27/2004

81.87 

80.92 

85.99

85.78 

94.61 

97.19

89.96 

81.19 

95.61

94.13 

96.68 

90.16

5.08 

5.79 

3.23

6.50 

3.30 

3.24

27.97 

22.53 

13.21

AD01

AD06

AD08

Image ProcessingImage Processing for MS CDL, 2004for MS CDL, 2004

AD08 AD06 Legend

Multi-Temporal Field Classification ComparisonMulti-Temporal Field Classification Comparison

The MississippiThe MississippiCropland Cropland

Data Layer, Data Layer, 20042004

Release Date, July 2005Release Date, July 2005

BolivarBolivar CountyCounty

Cropland Cropland Data Data

Layer,Layer,20042004

Release Date, July Release Date, July 20052005

2004 Acreage Estimates (Mean= 100.0, St. Dev. = 24.7)

5060708090

100110120130140150

Cotton Rice Soybeans Sorghum Corn Wheat SweetPotatoes

All Crops(mean)

Crop

Per

cen

t o

f O

ffic

ial N

AS

S E

stim

ate

(%)

Mississippi State-WideMississippi State-WideCropland Data Layer Acreage Estimation Results, 2004Cropland Data Layer Acreage Estimation Results, 2004

Mean = 100.28, Standard Deviation = 7.09

80.0

90.0

100.0

110.0

120.0

1999 2000 2001 2002 2003 2004 '99-'04

Year

CD

L v

s.

NA

SS

Es

tim

ate

(%

)

CottonRiceSoybeans

MS Major Crop CDL vs. Official NASS Acreage Estimates, 1999-2004MS Major Crop CDL vs. Official NASS Acreage Estimates, 1999-2004

Multi-Temporal Classification Results Multi-Temporal Classification Results Mississippi Cropland Data Layer 2004 Mississippi Cropland Data Layer 2004

Multi-Temporal StrategiesMulti-Temporal Strategies

•Three multi-temporal strategies were tested for the MS Delta region.

•The date combination selected for the multi-temporal administrative district gave superior definition for the classified map and better classification statistics overall.

Multi-Temporal Classification Results Multi-Temporal Classification Results Mississippi Cropland Data Layer 2004Mississippi Cropland Data Layer 2004

Acreage EstimatesAcreage Estimates

•The 2004 CDL acreage estimates for the major crops were consistent with previous years with 2 crops essentially in agreement with the NASS Official Estimates.

•Very early (wheat and corn) and late (sweet potatoes) crops showed less agreement, indicating the importance of the satellite scene dates.