Some Ecology and Distribution of Wrightia sirikitiae D.J. Middleton & Santisuk in Eastern Forest Complex

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Kesinee Fuangsamruat
Wattanachai Tasen
Sutee Duangjai

Abstract

Ecology and distribution of Wrightia sirikitiae D.J. Middleton & Santisuk were studied in Eastern Forest Complex. Study sites consisted of 10 temporary sampling plots of 20×50 m size of each, for plant community, ecological factors and analyzed the appropriate distribution area of W. sirikitiae  by Maximum Entropy Species Distribution Modeling (MaxEnt) version 3.3.3  program. The results showed that a total number of tree species were 36 species, 27 genus and  17 families, species diversity index of Shannon-Wiener’s  was 2.254 . The highest of importance value index  was Phyllanthus mirabilis   Müll. Arg,  followed by W. sirikitiae (82.680 and 59.469, respectively), while 44.44 % of W. sirikitiae  found at the sites was tree clumpy apparance.   The appropriate distribution area of W. sirikitiae by  Receiver  Operating  Characteristic (ROC)  assessment showed the 0.997 AUC.The results suggested that ecological factors are influenced distribution of W. sirikitiae as; geology followed by slope ,       soil series ,distance from water sources and monthly average rainfall, respectively.

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Fuangsamruat, K., Tasen, W. ., & Duangjai, . S. . . (2019). Some Ecology and Distribution of Wrightia sirikitiae D.J. Middleton & Santisuk in Eastern Forest Complex. Thai Journal of Forestry, 38(2), 16–26. Retrieved from https://li01.tci-thaijo.org/index.php/tjf/article/view/245876
Section
Original Articles

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