STUDY OF METHODS MEASURE DENSITY OF ASTRAGALUS VERUS OLIVIER (CASE STUDY: ISFAHAN FEREYDOONSHAHR RANGELAND)

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MORADI REZA; KARIMIAN VAHID; TARKESH MOSTAFA; VAHABI MOHAMMAD REZA; BASSIRI MEHDI

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Journal: Journal of Renewable Natural Resources Research Year:2016 | Volume:6 | Issue:4 (SERIAL NUMBER 22) Page(s): 65-74

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Title

STUDY OF METHODS MEASURE DENSITY OF ASTRAGALUS VERUS OLIVIER (CASE STUDY: ISFAHAN FEREYDOONSHAHR RANGELAND)

Author(s)

Keywords

DENSITY ESTIMATION METHODSQ2

NEAREST NEIGHBORQ2

SAMPLE SIZEQ2

ASTRAGALUS VERUSQ2

FEREYDOUN SHAHRQ2

ISFAHANQ2

Abstract

In order to analyze density measurement methods, a study site with four replicates in Fereydoonshahr characterized with vegetation type ASTRAGALUS VERUS-Bromus tomentellus was selected. In each site (an area with 5000 m2 in dimension 50*100m), real density was calculated by counting all individuals of ASTRAGALUS VERUS. Samples were taken in random-systematic manner. Within each replication, five transects 100 m in length were established and given SAMPLE SIZE for each method, some points were selected in randomized manner and density measurement methods (Closest Individual Method, NEAREST NEIGHBOR Method, Random Pairs Method, Point Centered Quarter Method, Wandering Quarter Method, Angle Order Method, Corrected Point Distance Method) were implemented. Difference between density measurement methods by control method counting was evaluated using LSD method. According to the results, the closest estimation to control is NEAREST NEIGHBOR one. Point Centered Quarter Method, Wandering Quarter Method, Angle Order Method, and Corrected Point Distance Method showed significant difference to control. The largest and lowest SAMPLE SIZE was attributed to Angle Order (33) and Wandering Quarter Methods (125) among others. The regular and T square had longest and shortest measurement times. The NEAREST NEIGHBOR showed the highest accuracy and Wandering Quarter as well as Point Centered Quarter had the least accuracy.

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APA: Copy

MORADI, REZA, KARIMIAN, VAHID, TARKESH, MOSTAFA, VAHABI, MOHAMMAD REZA, & BASSIRI, MEHDI. (2016). STUDY OF METHODS MEASURE DENSITY OF ASTRAGALUS VERUS OLIVIER (CASE STUDY: ISFAHAN FEREYDOONSHAHR RANGELAND). RENEWABLE NATURAL RESOURCES RESEARCH, 6(4 (SERIAL NUMBER 22)), 65-74. SID. https://sid.ir/paper/212355/en

Vancouver: Copy

MORADI REZA, KARIMIAN VAHID, TARKESH MOSTAFA, VAHABI MOHAMMAD REZA, BASSIRI MEHDI. STUDY OF METHODS MEASURE DENSITY OF ASTRAGALUS VERUS OLIVIER (CASE STUDY: ISFAHAN FEREYDOONSHAHR RANGELAND). RENEWABLE NATURAL RESOURCES RESEARCH[Internet]. 2016;6(4 (SERIAL NUMBER 22)):65-74. Available from: https://sid.ir/paper/212355/en

IEEE: Copy

REZA MORADI, VAHID KARIMIAN, MOSTAFA TARKESH, MOHAMMAD REZA VAHABI, and MEHDI BASSIRI, “STUDY OF METHODS MEASURE DENSITY OF ASTRAGALUS VERUS OLIVIER (CASE STUDY: ISFAHAN FEREYDOONSHAHR RANGELAND),” RENEWABLE NATURAL RESOURCES RESEARCH, vol. 6, no. 4 (SERIAL NUMBER 22), pp. 65–74, 2016, [Online]. Available: https://sid.ir/paper/212355/en

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