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Species composition and forest structure in tropical moist deciduous forest of Bangladesh—a case study in Thakurgaon

تكوين أنواع وبنية الغابات المدارية الرطبة في بنجلادش دراسة حالة في Thakurgaon

Abstract

This study was conducted in the tropical moist deciduous forest in Bangladesh to describe the species composition, diversity, and the forest structure. There were three plots established in Ranishonkoil, Ruhia, and Baliadangi forest beat in Thakurgaon. A total of 126 tree species, 1,991 stems (663 ha−1) of ≥10-cm girth were listed. Tree communities in these forest region differed in dominance, composition, diversity, and structure; and tree stand density varied from 651 to 685 ha−1. Species diversity (H1) ranges from 3.11 to 3.48. Meliaceae, Myrtaceae, and Rubiaceae were the most abundant families within the three plot area. Study site 2 is more diverse at spatial scale and taxonomic levels due to high rainfall and favorable edaphic condition. This study will help the foresters as baseline information for monitoring and sustaining diversity of tropical moist deciduous forests in Bangladesh.

 أجريت هذه الدراسة في الغابات الاستوائية الرطبة في بنغلاديش لوصف تكوين الأنواع والتنوع وبنية الغابات . هناك ثلاث قطع أنشئت في غابات Ranishonkoil و Ruhia Baliadangi في ثاكورجاون وقد تم سرد ما مجموعه 126 من انواع الاشجار و 1991 منبع (663 ha−1) التي مقاسها اكبر من او يساوي 10 سم . أختلفت شجرة الانواع في مناطق هذه الغابات من حيث العمومية (الغالبية) و تكوين الانواع والتنوع والتركيب وتراوحت شجرة الكثافة من 651 إلى 685 ha−1. . يتراوح تعدد الانواع (H1) من 311 إلى 348 Meliaceae . وقد وجدت أن أكثر الفصائل هي Myrtaceae و Rubiaceae في المناطق الثلاث . المنطقة الثانية كانت أكثر تنوع على مستوى الانواع ومستوى الانسجة نتيجة سقوط الامطار والظروف الملائمة . سوف تساعد هذه الدراسة مزارعين الغابات كقاعدة معلومات للمراقبة وللمحافظة على تنوع الغابات الاستوائية الرطبة في بنجلاديش

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Acknowledgment

The authors show their deep thanks and gratitude to the Japanese Education and Cultural Ministry (MONBUKAGAKSHU MEXT) for the financial support. The authors would like to thank the respondents of the study area, the Department of Agricultural Extension, and the Forest Department of Thakurgaon. The authors also acknowledge Md. Shameem Hassan Bhuiyan, meteorologist, Agrometeorology Division, Bangladesh Meteorological Department for the GIS data of Thakurgaon. We greatly appreciate the anonymous reviewers for their valuable comments, criticisms, and suggestions.

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Zaman, S., Siddiquee, S.U. & Katoh, M. Species composition and forest structure in tropical moist deciduous forest of Bangladesh—a case study in Thakurgaon. Arab J Geosci 4, 1315–1321 (2011). https://doi.org/10.1007/s12517-010-0235-x

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  • DOI: https://doi.org/10.1007/s12517-010-0235-x

Keywords

  • Species diversity
  • Structure
  • Dominance
  • Importance value index