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 Variation
Irrigated Corn (205 Fields)
200
190
180 " r
170
5
0 160

Includes corn used for grain or
~ 150
~ ~ ,,
e

silage. Planted late April to ~ 130 `

Corn early May. Full cover by late 120 -
July and harvested September 110
100
through November.
2 0- 20- 20- 20- 20- 20- 20-
A pr May Jun Jul Aug Sep Oct
26-Apr 12-May 5-Jun 7-Jul 24Aug 25-Sep 4Nov
Corn + STD 122.88 126.33 137.84 182.95 186.08 167.13 130.82
orn Mean 118.72 119.00 128.93 168.38 179.15 146.72 124.24
Corn -STD 114.57 111.67 120.02 153.80 172.21 126.31 117.66

Sugar Beets (51 Fields)
200 -

180 o
_ i
i e
p 160 ` ~ ~
~

Planted in April. Full cover in z
c ' `
Sugar Beets August and harvested in ~ 140 ~ ~~
October. ~
~
120

100

26-Apr 12-May 5-Jun 7-Jul 24-Aug 25-Sep 4-Nov
a ~ Sugar_Beets + STD 120.77 122.29 136.96 174.49 186.59 187.77 126.13
Sugar_Beets Mean 118.57 119.03 130.53 162.55 181.43 180.97 120.56
Sugar_Beets -STD 116.37 115.76 124.11 150.62 176.28 174.16 115.00

Alfalfa (152 Fields)
200
Green-up during April and early
180 ~
May with first cut beginning in ~
May. Harvested 3-4 times >
during the growing season z 160
ending in early October. The ~ 140 /
Alfalfa graphic to the right shows ver ~
y
high NDVI values throughout 120
the season. The high standard
deviation evidences the great 100
variability caused by different
CUttin
t1meS 26-Apr 12-May 5-Jun 7-Jul 24-Aug 25-Sep 4-Nov
g
. Alfalfa + STD 186.79 200.00 192.44 193.38 186.25 189.95 162.59
Alfalfa Mean 164.80 177.78 170.03 172.93 164.09 170.43 148.37
Alfalfa -STD 142.80 155.55 147.61 152.48 141.92 150.90 134.15

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