Ecology and Determinants of a Tropical Rainforest Landscape

作     者：Nwabueze I.Igu Jacinta U.Ezenwenyi 

作者机构：Department of Geography and MeteorologyNnamdi Azikiwe UniversityAwka420110Nigeria Department of Forestry and WildlifeNnamdi Azikiwe UniversityAwka420110Nigeria 

出 版 物：《Research in Ecology》 (生态学研究（英文）)

年 卷 期：2023年第5卷第1期

页      面：12-22页

学科分类：0907[农学-林学] 08[工学] 0829[工学-林业工程] 09[农学] 

基　　金：This work was funded by Tetfund-IBR grant re­ceived from the Federal Government of Nigeria 

主　　题：Biodiversity Conservation Environmental factors Gradient Tropical 

摘      要：Tropical ecosystems are bio-diverse ecosystems that differ according to varied environmental *** work assessed the tree diversity and environmental variables that define a rainforest ecosystem in southeast Nigeria.30 forest plots were used to identify trees≥10 cm(DBH measured at 130 cm).Soil samples were collected up to 30 cm deep at four edges and middle of each plot,and bulked for *** survey recorded a total of 2414 trees that belonged to 102 species and 32 ***-Wiener’s diversity index(H’)of 3.67,Inverse Simpson’s index(C)of 1.06,species evenness of 0.79 and Margalef’s index of species richness(M)of 12.97 were *** family recorded the highest number(1037)of individual tree(being 43%of total)observations,while Burseraceae had the least number(1).Species abundance status showed 2.9%of species as“Abundant,73.5%as“Endangered,2.9%as“Frequentand 20.6%of species as“Rare.Soil variables namely phosphorus,magnesium,potassium,particle sizes(sand,silt and clay),CEC,calcium,pH,and aluminium,influenced the distribution of the vegetation in decreasing *** factors(soil)determined the distribution of tree stems,growth and abundance of the species within the *** on conserving the ecosystem along environmental gradients and according to species status and indices are advocated.