Landscape Measures of Rangeland Condition in the BLM Owyhee Pilot Project: Shrub Canopy Mapping, Vegetation Classification, and Detection of Anomalous Land Areas

Tagestad, Jerry D. ; Downs, Janelle L.

Pacific Northwest National Laboratory (U.S.)

关键词: Plants;    Classification;    Soils;    Detection;    Rangelands;   

DOI  :  10.2172/1028601
RP-ID  :  PNNL-17209
RP-ID  :  AC05-76RL01830
RP-ID  :  1028601

美国|英语

来源: UNT Digital Library

【 摘 要 】

In 2006, the BLM tasked PNNL to collaborate in research being conducted under the Owyhee Uplands Pilot Project to assess rangeland condition. The objective of this effort was to provide Owyhee Uplands Pilot Project with a sophisticated suite of data and tools to assist in evaluating the health and condition of the Owyhee Uplands study area. We focused on three technical areas. The first involved enhancing existing algorithms to estimate shrub canopy cover in the Lower Reynolds Creek Watershed. The second task involved developing and applying a strategy to assess and compare three vegetation map products for the Idaho portion of the Owyhee study area. The third task developed techniques and data that can be used to identify areas exhibiting anomalous rangeland conditions (for example exotic plants or excessive bare soil exposure). This report documents the methods used, results obtained, and conclusions drawn.