CƠ CHẾ  DUY TRÌ ĐA DẠNG LOÀI CÂY GỖ  TRONG RỪNG LÁ RỘNG THƯỜNG XANH Ở KHU VỰC IA-MƠR, TỈNH GIA LAI

Nguyen Van Quy; Nguyen Van Hop; Nguyen Thanh Tuan; Bui Manh Hung; Nguyen Huu The

Authors

Nguyen Van Quy Trường Đại học Lâm nghiệp - Phân hiệu Đồng Nai
Nguyen Van Hop Trường Đại học Lâm nghiệp - Phân hiệu Đồng Nai
Nguyen Thanh Tuan Trường Đại học Lâm nghiệp - Phân hiệu Đồng Nai
Bui Manh Hung Trường Đại học Lâm nghiệp
Nguyen Huu The Phân viện Điều tra, Quy hoạch rừng Nam Trung Bộ và Tây Nguyên

Keywords:

Diversity structure,, coexistence mechanisms,, neighboring species, ISAR model, woody plant

Abstract

Understanding the underlying mechanisms that maintain the biodiversity of tropical forests is one of the primary focuses in community ecology. This article presented research results on the individual species-area relationship (ISAR) of woody species in the evergreen broadleaved forest at an Ia Mor area of Gia Lai province. Research data were collected from all individual trees with a diameter at breast height (dbh) ≥ 2.5 cm in a 2 ha -study plot (100 × 200 m). The ISAR models were built to analyze the influence of one species on the neighboring species diversity by using R version 4.1.1 software. Research results showed that the density and individual size of one species affect the individual species structure of the plant community. During the life-history stages, the juvenile trees influence more than the subadult and adult trees in promoting neighboring species diversity. Neutral species were numerically dominant against diversity accumulators and diversity repellers, accounting for 61 to 94 percent of the total number of species analyzed. From the obtained results, this study showed that asymmetric competition among individual trees of different life-history stages and the predominance of neutral species were two underlying processes that adjusted the individual species structure in the Ia Mor evergreen broadleaved forest

References

1. Ban Quản lý rừng phòng hộ Ia Meur, 2020. Báo cáo công tác Quản lý, bảo vệ rừng tại Ban Quản lý rừng phòng hộ Ia Meur, tỉnh Gia Lai năm 2020.

2. Ben-Said, M., 2021. Spatial point-pattern analysis as a powerful tool in identifying pattern-process relationships in plant ecology: an updated review. Ecology process, 10(56): 1 - 23.

3. Chave, J., 2004. Neutral theory and community ecology. Ecology letters, 7(7): 241 - 253.

4. Chesson, P., 2000. General theory of competitive coexistence in spatially varying environments. Theortical population biology, 58(3): 211 - 237.

5. Gong, G.Q., Huang, Z.L., Huang, J.X., Ye, W.H., Cao, H.L., Lian, J.Y. and Lin, G.J., 2011. How individual species structure the community in Dinghu Mountains 20 ha forest plot? Ecology and Environmental Sciences, 20: 991 - 995.

6. Nguyen Hong Hai and Cao Thi Thu Hien, 2019. Spatial associations and species diversity of tropical broadleaved forest, Gia Lai province. Journal of Forestry Science and Technology, no. 8/2019: 41 - 49.

7. Nguyen Hong Hai and Nguyen Minh Quang, 2019. Individual species area relationship of tropical tree species after selective logging regimes in Truong Son Forest Enterprise, Quang Binh province. Journal of Forestry Science and Technology, no. 7/2019: 25 - 34.

8. Phạm Hoàng Hộ, 1999 - 2003. Cây cỏ Việt Nam (tập 1 - 3), tái bản lần thứ 2. NXB Trẻ, Hà Nội.

9. Trần Hợp, 2002. Cây gỗ Việt Nam. NXB Nông nghiệp, Hà Nội.

10. Illian, J. and Burslem, D., 2007. Contributions of spatial point process modelling to biodiversity theory. Journal de la société française de statistique, 148(1): 9 - 29

11. Kew science, 2021. <http://www.plantsoftheworldonline.org>. Accessed October 2021.

12. Law, R., Illian, J., Burslem, D.F.R.P., Gratzer, G., Gunatilleke, C.V.S. and Gunatilleke, I.A.U.N., 2009. Ecoogical information from satial patterns of plants: Insights from point process theory. Journal of Ecology, 97(4): 616-628.

13. Lieberman, M., Lieberman, D., 2007. Nearest-neighbor tree species combinations in tropical forest: the role of chance, and some consequences of high diversity. Oikos, 116(3): 377 - 386.

14. Loosmore, N.B. and Ford, E.D., 2006. Statistical inference using the G or K point pattern spatial statistics. Ecology, 87(8): 1925 - 1931.

15. Ma, Z.Y., Shi, L., Wu, X.J. and Zhang, C.Y., 2014. Maintaining mechanism of tree diversity in a secondary conifer and broadleaf mixed forest in Changbai Mountains. Journal of Beijing Forestry University, 36(6): 93 - 98.

16. Perry, G.L.W., Miller, B.P. and Enright, N.J., 2006. A comparison of methods for the statistical analysis of spatial point patterns in plant ecology. Plant Ecology, 187, 59 - 82.

17. Petritan, I.C., Marzano, R., Petritan, A.M. and Lingua. E., 2014. Overstory succession in a mixed Quercus petraea-Fagus sylvatica old growth forest revealed through the spatial pattern of competition and mortality.

Forest Ecology and Management 326: 9 - 17.

18. R Development Core Team, 2021. R: A Language and Environment for Statistical Computing. R Foundation for Statistical Computing. <http://www.r-project.org/>.

19. Rayburn, A.P. and Wiegand, T., 2012. Individual species-area relationships and spatial patterns of species diversity in a Great Basin, semi-arid shrubland. Ecography, 35(4): 341 - 347.

20. Ricklefs, R.E., 1987. Community diversity relative roles of local and regional process. Science, 235(4785): 167 - 171.

21. Stokes, C.J. and Archer, S.R., 2010. Niche differentiation and neutral theory: an integrated perspective on shrub assemblages in a parkland savanna. Ecology, 91(4): 1152 - 1162.

22. Nguyễn Hải Tuất và Nguyễn Trọng Bình, 2005. Khai thác và sử dụng SPSS để xử lý số liệu nghiên cứu trong Lâm nghiệp. NXB Nông nghiệp.

23. Weine, R.S., 1990. Asymmetric competition in plant populations. Trends in Ecology ＆ Evolution, 5(11): 360 - 364.

24. Wiegand, T. and Moloney, K.A., 2004. Rings, circles, and null-models for point pattern analysis in ecology. Oikos, 104(2), 209 - 229.

25. Wiegand, T., Gunatilleke, C.V.S., Gunatilleke, I.A.U.N. and Hut, A., 2007. How individual species structure diversity in tropical forests. PNAS, 104(48): 19029 - 19033.

26. World flora online, 2021. <http://104.198.148.243 >. Accessed October 2021.

27. Wright, S.J., 2002. Plant diversity in tropical forests: a review of mechanisms of species coexistence. Oecologia, 130(1): 1 - 14.

28. Yang, J., Swenson, N.G., Cao, M., Chuyon, G.B., Ewango, C.E.N., Howe, R., Kenfack, D., Thomas, D., Wolf, A. and Lin, L., 2013. A Phylogenetic perspective on the individual species -area relationship in temperate and tropical tree communities. PLoS One, 8(5): e63192．

29. Zhang, Y.U., Jin, W.B., Gao, L.S. and Zhao, X.H., 2014. Scale dependent structuring of spatial diversity in two temperate forest communities. Forest Ecology and Management, 316(15): 110 - 116.

30. Zhang, M.J., 2011. Research on intraspecific and interspecific interactions of plant communities in arid regions based on spatial pattern. PhD thesis, Nanjing University.