Effect estimation of stem density and LAI on the evapotranspiration rate from forest stand
نویسنده
چکیده
The estimation model was constructed to estimate the evapotranspiration and canopy interception from the forest stand using the parameters showing the forest structure such as stem density, tree height and leaf area index. This model is expected to have the ability to estimate the effect of forest management such as stem thinning and leaf amount control. Comparing the calculated rate by this model and the observed rate in previous studies, the model can estimate the evapotranspiration and canopy interception. The effect of air temperature rise on the potential water resources was also estimated. Its decrease ratio was calculated to be around 11–13%.
منابع مشابه
Spatial variability and estimation of tree attributes in a plantation forest in the Caspian region of Iran using geostatistical analysis
This research was conducted to investigate spatial variability and estimate tree attributes in a plantation forest in the Caspian region of Iran using geostatistical analysis. Sampling was performed based on a 50m?125m systematic grid in a maple stand (Acer velutinum Boiss) 18 years of age using circular samples of 200m2 area. Totally, 96 sample plots were measured in 63 hectares and 14.25 he...
متن کاملGeostatistically estimation and mapping of forest stock in a natural unmanaged forest in the Caspian region of Iran
Estimation and mapping of forest resources are preconditions for management, planning and research. In this study, we applied kriging interpolation of geostatistics for estimation and mapping of forest stock at-tributes in a natural, uneven-aged, unmanaged forest in the Caspian region of northern Iran. The site of the study has an area of 516 ha and an elevation that ranges from 1100 to 1450 m ...
متن کاملDynamics and Structural characteristics of a natural unlogged oriental beech (Fagus orientalis Lipsky) stand during a 5-years period in Shast Kalate Forest, Northern Iran
Investigation on structure and dynamics of natural forest ecosystems is an important issue for silvicultural decisions. The aim of this study is to analysis dynamics and structure of a beech stand during 5-year period in the Shast Kalateh forest in the Caspian region, North of Iran. Data were collected from a 16.9ha permanent research plot established in a natural unlogged stand in 2006. All li...
متن کاملStudy on the effect of forest stand distribution pattern on results of different estimators of the nearest individual distance method
The Nearest Individual Sampling Method is one of the distance sampling methods for estimating density, canopy cover and height of forest stands. Some distance sampling methods have more than one density estimator that may be skewed to the spatial pattern. Unless the stands of the trees under study have a random spatial pattern. Therefore, the purpose of this study was evaluating the effect of s...
متن کاملMultiscale model intercomparisons of CO2 and H2O exchange rates in a maturing southeastern US pine forest
We compared four existing process-based stand-level models of varying complexity (physiological principles in predicting growth, photosynthesis and evapotranspiration, biogeochemical cycles, and stand to ecosystem carbon and evapotranspiration simulator) and a new nested model with 4 years of eddy-covariance-measured water vapor (LE) and CO2 (Fc) fluxes at a maturing loblolly pine forest. The n...
متن کامل