SPDSS_Task89-2_CropLandUseClassificationProcedures_20060929

• Title: SPDSS Task 89.2 - Crop and Land Use Classification Procedures for Year 2001
• Description: This memorandum describes the activities conducted under Task 89: ‘Mapping of Irrigated Land Use and Irrigated Parcel Boundaries’ for year 2001 and complements the SPDSS Memoranda for Task 89.1 and Task 90.2. This memorandum also provides details on the methods used to conduct a number of Task 89 activities, including Task 89.3: Determine Irrigated Vs. Non-irrigated Lands, Task 89.4: Identify Crop Types In Each Polygon, Task 89.5: Review, Revision and Final Classification, and Task 89.6: Conduct Accuracy Assessment, as well as the results obtained from these activities for year 2001.
• Decision Support - Doc Type: Task Memorandum
• Date: 9/29/2006
• DSS Category: GIS
• DSS: South Platte
• Basin: South Platte
• Contract/PO #: C153960
• Grant Type: Non-Reimbursable
• Bill Number: SB01-157, HB02-1152, SB03-110, HB04-1221, SB05-084, HB06-1313, SB07-122
• Prepared By: Riverside Technology inc.

MEMO 89.2 -APPENDIX C
Crop Type General Description Mean Temporal NDVI Vari ation
Irrigated Grass (32 Fields)
200
-
180 ,

Mostly pasture with some p
z 160
cultivated grass and hay. R 140 '
Grass/
Pasture/Hay Pasture fields green-up in spring ~ ~ ~ ~
and early summer. Grazing 120
occurs at irregular intervals.
100 -
26-Apr 12-May 5-Jun 7-Jul 24-Aug 25-Sep 4-Nov
• Grass + STD 179.50 187.31 184.60 169.31 180.93 178.26 168.92
Grass Mean 157.10 162.77 165.38 149.70 164.49 161.46 147.72
Grass -STD 134.70 138.23 146.16 130.09 148.05 144.67 126.51

Fallow (15 fields)
200

180
Cropland that is purposely kept
out of production during a o 160
cropping season mainly to ~
Summer conser
e moist
re for the neat a 140 °
Fallow v
u
season. It is common for wheat ~ ,
producers to rotate half their 120
cropland to summer fallow each
year. 100
26-Apr 12-May 5-Jun 7-Jul 24-Aug 25-Sep 4-Nov
® Fallow+STD 133.99 138.31 140.09 125.98 124.97 123.62 148.66
Fallow Mean 125.63 127.17 130.03 121.96 119.65 120.05 133.68
Fallow -STD 117.28 116.04 119.98 117.94 114.33 116.49 118.70

Other Crop Types in the SPDSS Area
Includes a great variety of
vegetables crops such as onions,
potatoes, squash, pumpkins,
carrots, cabbage, cauliflower,
lettuce, spinach, broccoli, etc.
Some of them are harvested
Vegetables several times a year. Vegetables This group has very diverse temporal NDVI trends
production areas are
concentrated along the State
Highway 85 corridor north of
Denver and in the areas that
surround Greeley. Some
vegetables farms are located
north of Fort Collins.
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