My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
SPDSS_Task89-2_CropLandUseClassificationProcedures_20060929
CWCB
>
Decision Support Systems
>
DayForward
>
SPDSS_Task89-2_CropLandUseClassificationProcedures_20060929
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
4/17/2013 9:54:12 AM
Creation date
6/5/2008 9:24:41 AM
Metadata
Fields
Template:
Decision Support Systems
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.
There are no annotations on this page.
Document management portal powered by Laserfiche WebLink 9 © 1998-2015
Laserfiche.
All rights reserved.
/
45
PDF
Print
Pages to print
Enter page numbers and/or page ranges separated by commas. For example, 1,3,5-12.
After downloading, print the document using a PDF reader (e.g. Adobe Reader).
Show annotations
View images
View plain text
MEMO 89.2 <br /> <br /> _~ <br />- <br /> ~~ <br />' - <br />_ ~~; <br />~ <br /> }~ <br />R , <br />~ {` ' <br />~ ~ <br />I <br />! <br /> ~ ; <br />~` : ~~ * <br /> <br />r 9, y <br />, X01 <br />-. 4 <br />'.~~ <br />ti. <br /> <br />~,.. 4 <br />A <br /> <br />~. <br /> <br />Y, <br />` <br />~. ,' {. <br /> <br /> _ _ _ <br />Figure 7. Delineation of FSA Reference Parcels Using Buffer Zones <br />2.5 Classification <br />The classification procedure conducted was hierarchical, starting with the discrimination of irrigated <br />lands from non-irrigated lands through interpretation and analysis of multi-temporal NDVI data derived <br />from Landsat imagery. This preliminary irrigated lands classification was combined with DOQQs to <br />delineate irrigated parcel boundaries as described in the SPDSS Memorandum for Task 90.2. Once the <br />parcels were delineated, irrigated lands were classified into major crop types using the ERDAS Imagine <br />Maximum Likelihood Classifier (MLC). The maximum likelihood classifier is one of the most popular <br />methods of classification in remote sensing, in which a pixel with the maximum likelihood is classified <br />into the corresponding class (e.g. Jensen, 1996). <br />Reference data collected from FSA, as described in Section 2.4, were used to train the MLC and evaluate <br />classification performance. The MLC classification was combined with GIS and other ancillary data in a <br />series of rules to assign crop type information to the previously delineated agricultural parcels. In <br />addition, inputs of water commissioners, water users, ditch companies, and field observations were used <br />to refine the classification in an iterative process. <br />2.5.1 Classification of Irrigated Lands <br />The classification of irrigated lands consisted of two main processes including, (1) multitemporal analysis <br />and, (2) classification refinement. In the first process, reference data obtained from FSA and other <br />sources was used to analyze temporal signatures of irrigated and non-irrigated cover types (Figure 8). <br />Page 12 of 45 ~Rlversfde FecAnotogy, fnc. <br />4'JaYer Resources Errgi~ecr:np an~i CansuFlrnp <br />
The URL can be used to link to this page
Your browser does not support the video tag.