Sampling under the Bureau of Land Management (BLM) Assessment, Inventory, and Monitoring (AIM) Strategy is based on a suite of consistent indicators of the three key attributes of ecosystem sustainability. The AIM Strategy recommends that six core indicators be quantified wherever BLM implements quantitative vegetation or soil monitoring in grassland, savanna, woodland, forest, and riparian ecosystems. A method is a specific technique or protocol for measuring an indicator. There may be many suitable methods for measuring an indicator. The first four core indicators are measured using the line-point intercept (LPI) method for foliar cover, along with modifications for data collection in tree cover augmented by a plot-level plant species inventory. Remote sensing integration refers to the simultaneous use of field and remote-sensing data for monitoring and assessment. The ability to combine sets of observations collected at different locations and for different purposes requires both consistent methods and sample designs.