COMPARISON OF DISTANCE METHODS EFFICIENCY OF DENSITY ESTIMATION IN ARTEMISIA- STIPA TYPE

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SANADGOL A.A.; MOGHADAM MOHAMMAD REZA

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Journal: IRANIAN JOURNAL OF RANGE AND DESERT RESEARCH Year:2002 | Volume:- | Issue:6 Page(s): 1-13

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Title

COMPARISON OF DISTANCE METHODS EFFICIENCY OF DENSITY ESTIMATION IN ARTEMISIA- STIPA TYPE

Author(s)

SANADGOL A.A. | MOGHADAM MOHAMMAD REZA | Issue Writer Certificate

Keywords

DISTANCE MEASURE TECHNIQUESQ3

DENSITYQ3

STIPA HOHENACKERIANA AND ARTEMISIA SIEBERIQ2

Abstract

Seven DISTANCE MEASURE TECHNIQUES; Random pairs, closest individual, Angle order, nearest neighbor, point-centered quarter. Wandering quarter and Joint point-nearest neighbor were employed for estimating of Artemisia sieberi and Stipa hohenackeriana population's DENSITY in a shrub-Grass vegetation Type. The study was conducted in the steppic zone of south west of Tehran (Roud-e-shoor) in 1995.A representative area of the vegetation type was chosen for applying the techniques. The actual DENSITY or check was resulted by counting the population individuals on a 0.5 ha.site. Consumed times were measured for each method. The pielou's and Dice's indices were applied to determine the forms of population distribution patterns. A t-test was used for comparison the means with each other and actual DENSITY. The indices of distribution patterns showed that both Artemisia sieberi and Stipa hohenackeriana were contagious populations.In Artemisia sieberi population, the nearest nieber, closest indivilual and random pairs methods estimated the DENSITY near to the check and statistically, there were not any significant difference (a =5%) between them and check. Random pairs method estimation was more accurate than nearest niebor and closest individual.In Stipa hohenackeriana population the random pairs, nearest nieghbor and Joint point -nearest nieghbor methods estimated the DENSITY near the check and statistically were not any significant difference but the nearest neighbor method consumed less time. The two methods of random pairs and nearest neighbor estimathed the DENSITY of populations of the species more accuracy and faster.

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APA: Copy

SANADGOL, A.A., & MOGHADAM, MOHAMMAD REZA. (2002). COMPARISON OF DISTANCE METHODS EFFICIENCY OF DENSITY ESTIMATION IN ARTEMISIA- STIPA TYPE. IRANIAN JOURNAL OF RANGE AND DESERT RESEARCH, -(6), 1-13. SID. https://sid.ir/paper/107446/en

Vancouver: Copy

SANADGOL A.A., MOGHADAM MOHAMMAD REZA. COMPARISON OF DISTANCE METHODS EFFICIENCY OF DENSITY ESTIMATION IN ARTEMISIA- STIPA TYPE. IRANIAN JOURNAL OF RANGE AND DESERT RESEARCH[Internet]. 2002;-(6):1-13. Available from: https://sid.ir/paper/107446/en

IEEE: Copy

A.A. SANADGOL, and MOHAMMAD REZA MOGHADAM, “COMPARISON OF DISTANCE METHODS EFFICIENCY OF DENSITY ESTIMATION IN ARTEMISIA- STIPA TYPE,” IRANIAN JOURNAL OF RANGE AND DESERT RESEARCH, vol. -, no. 6, pp. 1–13, 2002, [Online]. Available: https://sid.ir/paper/107446/en

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