نتایج جستجو برای: stand volume reduction
تعداد نتایج: 817809 فیلتر نتایج به سال:
This paper examines three empirically based methods of monitoring forest growth between 1991 and 2000 from airborne synthetic aperture radar (SAR). In the first method, height change and volume change between 1991 and 2000 were estimated from the mean L-band stand backscatter difference between the two dates. Height change and volume change over the nine year period were estimated with an accur...
Uncontrolled urbanization is a frequent cause behind the local flooding of catchment areas. This also results in degradation water quality receivers, as well causing disruption natural cycle catchment. Classical solutions, such retention, do not prove to be sufficient under all conditions. An alternative solution application low impact development (LID), which, analysed case, takes form rain ga...
Using existing equations to estimate the biomass of a single tree or a forest stand still involves large uncertainties. In this study, we developed individual-tree biomass models for Chinese Fir (Cunninghamia lanceolata.) stands in Fujian Province, southeast China, by using 74 previously established models that have been most commonly used to estimate tree biomass. We selected the best fit mode...
The management planning system of Finnish private forests is currently changing from mainly field inventory–based into one that makes use of airborne laser scanning (ALS) data, aerial photographs and a sample of field plots. In the traditional system every stand of the inventoried area is visited and some relascope sample plots measured within the stand. This is time consuming, expensive, and p...
Background: The aim of this study was to evaluate the reduction in excision cavity volume (ECV) during the whole breast radiotherapy (WBRT). The delineating of reduced cavity volume on secondary CT (computed tomography) might decrease the field size of boost plan. Materials and Methods: Twenty patients were treated having breast conservative surgery. At first, primary CT simulation (CT-1) was d...
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