Stand Characteristics and Water Conservation Capacity of Pinus massoniana and Castanopsis fissa Mixed Plantation
In order to explore the stand characteristics and soil and water conservation capacity of Pinus massoniana interplanting Castanopsis fissa plantations with different ages, a coniferous and broad-leaved mixed plantation with varies ages was restored and established at large-diameter timber cultivations.This plantation was used for revealing soil fertility, water conservation function and bio-diversity in C.fissa and P.massoniana mixed plantations.The pure C.fissa plantation and pure P.massoniana plantation was used as control treatment.Growth characters, biomass of different layers in the plantation, soil physical and chemical properties and water conservation capacity were measured, respectively.The tree growth of both P.massoniana and C.fissa was increased in the mixed plantation with upper layer of P.massoniana density of 450-600ind./hm2 than that in the control.The soil fertility was improved, and soil and water conservation capacity was enhanced.Stand renewal technology of P.massoniana mixed with C.fissa was established.This update technology can guide the transformation and management of pure P.massoniana plantation, and silviculture of coniferous and broad-leaved mixed plantation cultivation of different ages as well as large diameter timber cultivations.
Pinus massonianaCastanopsis fissaDifferent age forests complexLarge diameter timberSpecies diversityUpdate technology