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 333
- Downloads 0
The Phytoremidiation Technique for Cleaning Up Contaminated Soil by Geranium (pelargonium roseum)
Phytoremediation is the biotechnological application of plants to detoxify pollutants, and is an ideal and modern technique for environmental clean-up. Regarding the vast industrial waste materials and sewages from a l...
Influence of Vermicompost and Arbuscular Mycorrhizal Fungi on Growth of Two Strawberry Cultivars and Some Chemical Properties of Postharvest Soil
A study was conducted to evaluate the effect of biofertilizers (two species of arbuscular mycorrhizal (AM) fungi and vermicompost) on relative yield (%), root dry weight (g pot-1) and shoot/root ratio of Kurdistan and...
Investigation of Factors Affecting the Early Spring Migration of nomads in Fars Province
Iran is located in an area where geographically andtopographicallymost of its land cannot be planted. Because of the high difference inaltitude between plain lands and mountainous regions and also climate diversity, th...
Ferula assa-foetida as a main medical plant in east of Iran (harvesting, main characteristics and economical importance)
Many people in Mediterranean region who consult with spiritual healers, homeopaths and herbalists are utilizing traditional therapies. These are the first choice for problems such as liver diseases, inflammation, skin...
Assessment of the effect of planting date and seed rate on red clover forage yield in Shahrekord region
Red clover (Trifolium pretense) is a short- lived perennial legume forage plant which is grown in rangeland and field conditions. This study was conducted to assay the effects of planting date and seed rate on red clov...