Permanent sample plots in large-area forest inventory.
نویسندگان
چکیده
منابع مشابه
Herb Layer Diversity and Phytoindicative Evaluation of Habitat Conditions of Forest Permanent Plots in Poland
The influence of climatic and pollution gradients was determined on species richness, species diversity, and values of phytoindicators of the herb layer in pine and mixed pine forest communities in Poland. Geographical longitude was used as a synthetic measure of geographical position. Ellenberg’s indices were used as synthetic measures of habitat differentiation, calculated as weighed averages...
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BACKGROUND Monitoring and managing carbon stocks in forested ecosystems requires accurate and repeatable quantification of the spatial distribution of wood volume at landscape to regional scales. Grid-based forest inventory networks have provided valuable records of forest structure and dynamics at individual plot scales, but in isolation they may not represent the carbon dynamics of heterogene...
متن کاملStatistical Properties of Alternative National Forest Inventory Area Estimators
The statistical properties of potential estimators of forest area for the USDA Forest Service’s Forest Inventory and Analysis (FIA) program are presented and discussed. The current FIA area estimator is compared and contrasted with a weighted mean estimator and an estimator based on the Polya posterior, in the presence of nonresponse. Estimator optimality is evaluated both theoretically and via...
متن کاملSupporting large-area, sample-based forest inventories with very high spatial resolution satellite imagery
Information needs associated with forest management and reporting requires data with a steadily increasing level of detail and temporal frequency. Remote sensing satellites commonly used for forest monitoring (eg, Landsat, SPOT) typically collect imagery with suffi cient temporal frequency, but lack the requisite spatial and categorical detail for some forest inventory information needs. Aerial...
متن کاملA potential network of permanent forest plots for the West Coast Conservancy
Permanent plots in indigenous forests administered by the Department of Conservation's West Coast Conservancy in the National Vegetation Survey (NVS) database were analysed to show which forest types were adequately sampled according to identifiable forest types, and within each type, in space and in time. From 404 permanent forest plots considered in analysis, eight forest types were determine...
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ژورنال
عنوان ژورنال: Silva Fennica
سال: 1989
ISSN: 2242-4075
DOI: 10.14214/sf.a15544