Spatial Estimation of the Site Index for Pinus densiplora using Kriging

김경민,; 박기호,

doi:10.14578/jkfs.2013.102.4.467

Cited by 2 publications

(1 citation statement)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Site index is one of the most widely used measures of site quality (Pyo et al 2009) and is defined as the height of the dominant or co-dominant tree species at a certain base age of a stand. The uppermost tree canopy is relatively less affected by anthropogenic factors, the surrounding environment, and stand density; therefore, this height is typically used as a measure of the site quality and represents the productivity potential of a site (Jung 1994;Gadow and Hui 1999;Husch et al 2002;Kim and Park 2013;Kang 2017).…”

Section: Introductionmentioning

confidence: 99%

Model development to estimate site index values for six major tree species in North Korea

et al. 2022

View full text Add to dashboard Cite

Due to considerable deforestation in North Korea, there is a need to plan forest restoration programs based on scientific forest management. In this study, a methodology was developed for estimating the site index values of six major tree species and the forest productivity potential. The site index values of these tree species were derived in South Korea using the Chapman-Richards equation. These values were used with data from the 6th National Forest Inventory, which included 20 types of edaphic, topographic, and climatic factors, and random forest analysis—a widely used machine learning technique for spatial prediction—to develop a new model for estimating the site index values of these species across South Korea. The prediction accuracy of this model was evaluated using the root mean square error. The results show that the prediction accuracy was high, with a root mean square error of ~ 1 m. Moreover, the importance of the variables related to climate and geography was generally high. The proposed site index estimation model for six tree species was applied across North Korea, and its effectiveness tested by comparing the estimated values with those reported in literature from North Korea. The differences between the model outputs and recorded data in the northern alpine regions were presumably due to the lack of data for high-altitude regions in South Korea. This model is based on the determination of the suitability of tree species in restoration efforts. Therefore, it can contribute to the evaluation of forest productivity in North Korea and may help plan efficient forest restoration programs.

show abstract

Section: Introductionmentioning

confidence: 99%

Model development to estimate site index values for six major tree species in North Korea

et al. 2022

View full text Add to dashboard Cite

show abstract

The Relationship between Stand Mean DBH and Temperature at a Watershed Scale: The Case of Andong-dam Basin

Moon¹,

Kim²,

Lim³

et al. 2016

Korean Journal of Agricultural and Forest Meteorology

View full text Add to dashboard Cite

This study aims to identify the relationship between climatic factors and stand mean Diameter at Breast Height (DBH) for two major tree species; Pinus densiflora and Quercus mongolica in Andong-dam basin. Forest variables such as age, diameter distribution and number of trees per hectare from the 5 th and 6 th National Forest Inventory data were used to develop a DBH estimation model. Climate data were collected from six meteorological observatory station and twelve Automatic Weather System provided by Korea Meteorological Administration to produce interpolated daily average temperature map with Inverse Distance Weighting (IDW) method. Andong-dam basin reflects rugged mountainous terrain, so temperature were adjusted by lapse rate based correction. As a result, predictions of model were consistent with the previous studies; that the rising temperature is negatively related to the growth of Pinus densiflora whereas opposing trend is observed for Quercus mongolica.

show abstract

Spatial Estimation of the Site Index for Pinus densiplora using Kriging

Cited by 2 publications

References 7 publications

Model development to estimate site index values for six major tree species in North Korea

Model development to estimate site index values for six major tree species in North Korea

The Relationship between Stand Mean DBH and Temperature at a Watershed Scale: The Case of Andong-dam Basin

Contact Info

Product

Resources

About