دورية أكاديمية
Spatial variability and estimation of tree attributes in a plantation forest in the Caspian region of Iran using geostatistical analysis
| العنوان: | Spatial variability and estimation of tree attributes in a plantation forest in the Caspian region of Iran using geostatistical analysis |
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| المؤلفون: | Akhavan, R. |
| المصدر: | Caspian Journal of Environmental Sciences, Vol 8, Iss 2, Pp 163-172 (2010) |
| بيانات النشر: | University of Guilan, 2010. |
| سنة النشر: | 2010 |
| المجموعة: | LCC:Environmental sciences LCC:Science |
| مصطلحات موضوعية: | Caspian region, Tree attribute, Plantation forest, Spatial variability, geostatistics, Environmental sciences, GE1-350, Science |
| الوصف: | 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 hectare was inventoried as full census area. Experimental variograms for forest stem basal area, stem density and tree height attributes were calculated and plotted using the geo-referenced inventory plots. The calculated variograms of basal area and height showed a high spatial auto-correlation, which is fitted by spherical model. However, stem density showed a large nugget effect. Estimations for basal area and height interpolated by ordinary block kriging and cross validation results showed that all the estimations were accurate. Furthermore, the estimated kriged mean of basal area showed no significant difference to the real mean in the full census area. Therefore, geostatistical analysis is able to capture and explain the spatial variability as well as estimate tree attributes (not stem density) in this kind of plantation forest, accurately. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1735-3033 1735-3866 |
| Relation: | https://cjes.guilan.ac.ir/article_1040.html; https://doaj.org/toc/1735-3033; https://doaj.org/toc/1735-3866 |
| URL الوصول: | https://doaj.org/article/6a847a3e1702446583a7456411f20846 |
| رقم الأكسشن: | edsdoj.6a847a3e1702446583a7456411f20846 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 17353033 17353866 |
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