Determination of appropriate grid dimension for assessment and mapping of woody Species Diversity using Geostatistical method in Zagros Forest, Iran
Journal Title: International Journal of Farming and Allied Sciences - Year 2016, Vol 5, Issue 5
Abstract
The aim of this study was to determine the most suitable grid (dimensions for sampling) according to the percentage of spatial structure and evaluating the accuracy of estimations of woody species diversity using geostatistics in Zagros forests, west of Iran. Sampling was carried out using circular sample plots with area of 1000m2 for 9 grid sizes in 200ha forest area. Experimental variograms were calculated and plotted for Shannon- Wiener and Simpson indices using geo-referenced inventoried plots. The calculated variograms for Shannon- Wiener and Simpson indices with grid dimensions of 150m × 200m, 200m × 200m, 200m × 400m and 150m × 600m showed a strong spatial structure, which fitted by a spherical model. The estimation and mapping for woody species diversity were made by ordinary block kriging and cross-validation results showed that the estimation were accurate. After assigning each sampling time, (E %) 2× T criterion was calculated in order to compare the methods. Sampling grid of 150m×600m for estimating Shannon- Wiener and Simpson indices had a minimum amount of E%2×T. Therefore, the 150m × 600m grid size was proposed as the most appropriate one to estimate woody species diversity in Iranian Zagros Forests.
Authors and Affiliations
A. Zohrevandi, H. Pourbabaei, R. Akhavan, A. E. Bonyad
Keywords
Related Articles
- EP ID EP32869
- DOI -
- Views 379
- Downloads 0
Effect of improvement of soil's physical and chemical characteristics on quality of potato
Potato is an important global food source and one of the most important sources of starch. Interaction between physical and chemical characteristic is important source of variation in any crop including potato, so in t...
Proline Metabolite Transport an Efficient Approach in corn Yield Improvement as Response to Drought Conditions
One of the main problems of corn cultivation and production is the lack of water resources, especially during periods of low rainfall which affect the vegetative growth rate and the amount of yield. Osmotic adjustment...
Comparison of population growth parameters of the Plodia interpunctella Hübner (Lepidoptera: Pyralidae) on Zahedi, Shahabi and Kabkab cultivars of date
The Indian meal moth, Plodia interpunctella (Hübner) (Lepidoptera: Pyralidae) is one of the most commonly reported pests of stored date in Iran. The population growth parameters of P. interpunctella were studied on thr...
Effect of Hot Water Treatment and Surface Disinfection with NaCl on Storage Life and Reducing Decay of Tomato Fruit
The postharvest losses in horticultural product are major problem in most of countries that in tomatoes has been reported from 20 to 50% in developing countries. In this work, the effects of 45°C hot water dipping for...
Study of yield and yield component of barley promising lines and variations through factor analysis
For the aim of categorizing barley promising lines and variations based on the experimental traits, in crop year of 2012 in Ardebil region 20 barley promising lines and variations were experimented on complete randomiz...