Study on Biomass and Physical and Chemical Properties of under Forest Soil of Elaeocarpus sylvestris Artificial Forest in the Urban Area of Shanwei City
[Objective]To explore the biomass of Elaeocarpus sylvestris artificial forests and the physical and chemical properties of understory soil,in order to provide theoretical support for the high-quality development and sustainable and stable ecological service functions of Elaeocarpus sylvestris artificial forests.[Method]The artificial forest of Elaeocarpus sylvestris planted in the suburbs of Shanwei was selected as the experimental object.The experimental site of Elaeocarpus sylvestris artificial forest was planted around 2010,with a tree age of about 14 years.The relative growth method was used to combine the diameter at breast height as a variable with various organs of the tree to establish an allometric growth model for the biomass of the four organs of the standard tree trunk,branches,leaves,and roots.The biomass was estimated and compared by converting the dry weight ratio.Test the physical and chemical properties of soil in artificial forests of Elaeocarpus sylvestris.[Result]The proportions of trunk,branch,leaf,and root of Elaeocarpus sylvestris were 50.83%,28.24%,3.58%,and 17.35%,respectively.The biomass of the Elaeocarpus sylvestris tree layer was 26.56 t·hm-2.The total forest biomass is 34.18 t·hm-2.The soil in the experimental site is weakly acidic,with moderate levels of organic matter,total nitrogen,alkali hydrolyzed nitrogen,and available phosphorus.[Conclusion]The forest biomass model of Elaeocarpus sylvestris artificial forest was successfully constructed using the standard wood method and power function fitting calculation.This model is not only applicable for measuring the biomass of the four organs of the stem,branches,leaves,and roots of Elaeocarpus sylvestris,but its effectiveness has been fully validated.The lack of available potassium content may be a limiting factor affecting the growth of Elaeocarpus sylvestris artificial forests,and soil nutrient adjustment analysis is beneficial for understanding the interaction mechanisms at different levels of the ecosystem.
Elaeocarpus sylvestrisShanwei cityartificial forestforest biomasssoil physical and chemical properties
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NSTL
万方数据
