| 摘要: |
| 应用网格法（1km×1km）设置22个样地调查东莞大岭山林分凋落物，室内分析其持水能力，利用传统统计方法与空间自相关分析方法分析凋落物的时空特征，研究结果显示：（1）7种林分的凋落物饱和持水量从大到小的顺序是：马占相思＞鸭脚木＞杉木＞荷木＞藜蒴＞尾叶桉＞马尾松。（2）7种林分凋落物的饱和持水率具有明显的季节性变化，在全年中有两个高峰值，第一次出现在4～7月，第二次出现在10～12月。最小值出现在1～3月。（3）东莞大岭山几种林分凋落物饱和持水率的Moran’s I指数值为-0.02009，其期望值E(I)为﹣0.04762，表现出较弱的负空间自相关性。 |
| 关键词: 大岭山 凋落物 持水能力 空间自相关 |
| DOI： |
| 分类号: |
| 基金项目:华南农业大学校长基金（2007X021），广东省林业局项目“广东省森林生态效益监测站建设与研究” |
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| Spatial Variability in Water-holding Capacity of the Litter Layers in the Plantation Forest Stands |
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Lin Guantu
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| Abstract: |
| Forest litters in 7 plantation stands were collected from 22 plots using a grid of 1km×1km sampling method for the determination of water-holding capacity. Spatio-temporal patterns of litter attributes were analyzed using conventional statistics and geo-statistics. Results showed that 1) saturated litter water-holding capacity of the 7 plantation stands varied in such an order: Acacia mangium＞Schefflera octophilla＞Cunninghamia lanceolata＞Schima superba＞Castanopsis fissa＞Eucalyptus urophylla＞Pinus massoniana; 2) saturated litter moisture content exhibited obvious monthly variations, with 2 peak value in April to July and in October to December, a lowest value in January to March; 3) Moran’s I value for the saturated litter moisture content was -0.02009 , with an expected E(I) as ﹣0.04762, indicating a weak negative spatial autocorrelation.
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| Key words: Dalingshan litter water-holding capacity spatial autocorrelation |
