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在浙江10.18万km2的区域内,有代表性地调查了12个县共24个马尾松生态公益林样地的凋落物。研究表明:马尾松林年均凋落量为257.9g/(m2.a),其中叶凋落含量为84.6%,枝、果实、皮、碎屑凋落含量分别为4.7%、4.2%、2.0%和4.5%。不同地区间比较表明,浙西北、浙中、浙南3个自然区域间年凋落量无显著差异(p>0.05),沿海则明显低于其它地区。年凋落量与马尾松林龄呈对数相关(p<0.01);年凋落量与马尾松的胸径、树高、生物量及群落生物量间也呈对数相关关系(p<0.01)。同龄林凋落量比较及凋落量与植物多样性关系表明:马尾松纯林的凋落量小于非纯林,且乔木种类越多,凋落量越多。从凋落物角度分析,马尾松纯林的生态效益较低,不利于林地自肥、保水及进一步的植被恢复。
In the area of 1,010,000 km2 in Zhejiang Province, the litter of 24 Masson Pine habitats was surveyed in 12 counties. The results showed that the annual average litterfall of Pinus massoniana forest was 257.9 g / (m2.a), the leaf litter content was 84.6%, and the litter contents of branch, fruit, skin and debris were 4.7%, 4.2%, 2.0% and 4.5% . Comparison of different regions showed that there was no significant difference (p> 0.05) in annual litterfall among the three natural areas in northwest Zhejiang, Zhezhong and Zhenan provinces, while the littoral was significantly lower in coastal areas than in other areas. The annual litterfall was logarithmically related to the age of Pinus massoniana (p <0.01). The annual litterfall was also logarithmically correlated with the DBH, tree height, biomass and community biomass of P. massoniana (p <0.01). The results showed that the litterfall of Pinus massoniana pure forest was less than that of non - pure forest, and the more the tree species, the more litterfall. From the litter point of view, the ecological benefits of pure P. massoniana forest is not conducive to woodland from fertilizer, water conservation and further vegetation restoration.