J Integr Plant Biol. ›› 1986, Vol. 28 ›› Issue (5): -.

• Research Articles •    

A Primary Study about the Relationship Between Nature Stand Production of Picea asperata and ecology environment Condition

Jiang Hong   

Abstract: In this paper, the relationship among nature stand production of Picea asperata forest and ecology environment condition was studied. The nature stand average net- primary-production of P. asperata is 5626kg/ha/a, photo-energy utilize rate (P) is 1.63%, general production (Pg) is 18.85 kcal/m2/d. Spruce tree average net-primary- production (NPP) is 4676 kg/ha/a, P is 1.35%, and Pg is 15.57 kcal/m2/d. The close relationship among ecology environment condition, leaf area index (LAI) and NPP of stand and spruce tree was further studied. It was discovered that among NPP of stand and spruce tree and elevation, slope direction, and stand density are quadric curve correlation; among NPP of stand and spruce tree and soil thickness, LAI is linear correlation, these mathematical model was builded. The poly-factor regression relationship among the NPP of stand and spruce tree and LAI, gradient, elevation, stand density, nomal density, soft thickness, rate of stand grade I tree and slope direction was studied and statistics analysised. In different condition, the photoenerge utilize rate, general production and economy coefficient was further system studied from plant physiology-ecology.

Key words: Picea asperata, Nature stand, Net-primary-production, General production, Production economy coefficient

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