武夷山风景名胜区森林生态系统枯立木空间特征研究

On Spatial Characters of the Dead Wood in Wuyi Mountain Forest Ecosystem

应用聚集度指标（C，I，I♂，M^＊和CA等）、Iwao M^＊店回归方程和Taylor幂法则模型的测定方法研究了武夷山隐屏峰、竹笋峰、虎啸岩、森林公园的枯立木空间分布格局．对不同坡向（阳坡、阴坡）、不同海拔高度（≤420m、420m）枯立木的空间分布，枯立木与活立木的相关性及不同区域（武夷山隐屏峰、竹笋峰、虎啸岩、森林公园）、不同坡向（阳坡、阴坡）、不同海拔高度（≤420m、〉420m）的枯立木数量差异进行了分析．结果表明，武夷山森林生态系统中枯立木的空间分布呈聚集分布（α〉0，β〉1），不同区域、不同坡向、不同海拔高度的枯立木数量存在显著差异，这种分布格局是由生境干旱造成的．

The spatial distribution pattern of the dead wood in Yinping peak, Zhusun peak, Huxiao rock and forest park of Wuyi Mountain was studied by using aggregate index（ C,I, I♂,M^＊, CA, ect） and Iwao＇ s regression equation and Taylor＇ s model. And by analyzing spatial distribution pattern of the dead wood on different slopes （sunny slope,shady slope） and at various altitudes（ ≤420m, 〉420m）,and analyzing the relativity between the dead wood and the live wood, and quantity difference of dead wood among the different areas （Yinping peak, Zhusun peak, Huxiao rock and forest park） and on different slopes （ sunny slope, shady slope） and at various altitudes（ ≤ 420m, 〉 420m）, the results showed that the spatial distribution pattern of the dead wood was aggregated （α 〉 0, β 〉 1 ） pattern in population and there exists distinct differences of dead wood quantities among the different areas, slopes and altitudes. And the main reason of these pattern is the drought of the niche.