马尾松人工林近自然林业经营技术的应用研究

In this paper，approximating-nature forestry management technique application research is developed in Pinus massaniana plantation for 17 years at Jiuxian Forestry Farm in Songxi county, Fujian province，The results show that the biodiversity of the Pinus massaniana plantation was increased from 48.5±3.3 to 74.6±3.3 after close-to-nature forestry management technique adopted. Compared with conventional management method，the tested forest's soil fertility was improved；the manifestations were devided into following aspects：the soil moisture-physical properties and soil exchange properties were ameliorated，the soil nutrient contents were increased；the average breast-height diameter，average tree height，individual volume and stand total volume were promoted by 7.28％~18.39％, 8.57％~20.02％, 21.81％~58.36％ and 3.04％~36.96％ respectively. The worse the site conditions，the effect indexes with close-to-nature forestry management technique were improved greater than those under better site conditions.