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Impact of trimming intensity on the growth of mangrove in Iran

Journal of Arid Land 2024年第12期16卷 1701-1713页

作者： Maryam MOSLEHI Akram AHMADI Tom PYPKER Research Division of Natural Resources Hormozgan Agricultural and Natural Resources Research and Education CenterAgricultural ResearchEducation and Extension Organization(AREEO)Bandar Abbas ***Iran Research Division of Natural Resources Golestan Agricultural and Natural Resources Research and Education CenterAREEOGorgan ***Iran Thompson Rivers University Kamloops V2C 0C8Canada

Mangrove forests in southern Iran are of high ecological and economic *** forests are being threatened because of uncontrolled harvesting to provide fodder for *** objective of this study is to provide recommendations for appropriate harvesting intensities by quantifying the effect of different harvesting intensities on vegetative and vigor characteristics of mangrove *** study was conducted using a randomized complete block design comprising four treatments(10.00%,20.00%,and 30.00% trimming,along with a control)replicated three *** characteristics were measured before and after trimming(five-year period)and analyzed using generalized linear model statistical *** growths of the average diameter of canopy,canopy area,canopy volume,canopy height,tree height,and collar diameter in the control treatment were all significantly higher than those in the trimming *** addition,there was a decreasing trend in leaf fresh and dry mass,leaf area index,total area of canopy leaves,and health status of tree in the trimming *** example,the percentage change in fresh and dry leaf mass in the control treatment was positive(29.87% and 38.31%,respectively),whereas the trimming treatments of 10.00%,20.00% and 30.00% had negative effects(-7.01% and -4.79%,-11.32% and -14.30%,and -15.84% and -17.29%,respectively).In addition,the changes in leaf area index in the control(4.95%)and 30.00% trimming(-24.57%)treatments were the highest and lowest,*** percentage change in soil organic matter in the control,10.00%,20.00%,and 30.00% treatments were 22.94%,-9.90%,-16.91%,and -18.68%,*** study demonstrated that gray mangrove trees were highly sensitive to canopy trimming,with even minimal trimming intensities negatively affecting vegetative growth and soil organic ***,it is recommended that cutting and trimming of mangrove trees should be prevented even at low intensity to preserve mangrov

关键词： trimming mangrove ecosystem vegetative characteristic harvest intensity soil organic matter khamir port

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