Litter production, seasonal pattern and nutrient return in seven natural forests compared with a plantation in southern China
Litter production, seasonal pattern and nutrient return in seven natural forests compared with a plantation in southern China
复制标题
DOI：
10.1093/forestry/cpi044
复制
发表时间：
2005-10
期刊：
影响因子：
2.8
通讯作者：
Yusheng Yang;Jianfen Guo;Guangshui Chen;Jinsheng Xie;R. Gao;Zhen Li;Zhao Jin
中科院分区：
文献类型：
--
作者：
Yusheng Yang;Jianfen Guo;Guangshui Chen;Jinsheng Xie;R. Gao;Zhen Li;Zhao Jin
摘要对木荷园7个天然林的凋落物数量、格局及其养分返还进行了研究。和冠军。（SCS）、Castanopsis fabri Hance （CAF）、TSO （TSO）、Cinnamomum chekiangense Nakai （CIC）、Altingia gracilipes Hemsl。Castanopsis carlesii （Hemsl.）与相邻29年生杉木人工林（Cunninghamia lanceolata Lamb）进行比较。（CUL），中国福建省建瓯市。3年观测的年平均凋落物总量从CUL的4.63 Mg ha - 1到PIM的8.85 Mg ha - 1不等；其中，叶片对凋落物的贡献率在62% ~ 73%之间。CAF、ALG和CAC的凋落物呈单峰分布模式，而其他5个森林的凋落物呈多峰分布模式。除磷元素外，8种林分以养分回报质量排序与以凋落物总质量排序不同。总凋落物N、K、Ca的年回报最高的分别是黄河区、黄河区和黄河区。土壤中磷和镁的潜在返回量在PIM中最高。与其他凋落物组分相比，叶片组分提供了更大的N、P、K、Ca和Mg的潜在回报。研究结果表明，天然林比单一针叶林具有更大的维持立地生产力的能力，因为天然林的地上凋落物数量更多，而且养分回报更高；因此，保护天然林是实现南方山区林业可持续发展的切实可行的森林管理措施。
Summary The amount and pattern of litterfall and its nutrient return were studied in seven natural forests of Schima superba Gardn. and Champ. (SCS), Castanopsis fabri Hance (CAF), Tsoongiodendron odorum Chun (TSO), Cinnamomum chekiangense Nakai (CIC), Altingia gracilipes Hemsl. (ALG), Castanopsis carlesii (Hemsl.) Hayata (CAC) and Pinus massoniana D. Don (PIM), and compared with that of an adjacent 29-year-old plantation of Chinese fi r ( Cunninghamia lanceolata Lamb.) (CUL) in Jianou, Fujian, China. Mean annual total litterfall over 3 years of observations varied from 4.63 Mg ha � � in the CUL to 8.85 Mg ha � � in the PIM; of this litterfall, the leaf contribution ranged from 62 to 73 per cent. Litterfall in the CAF, ALG and CAC showed an unimodal distribution pattern, while for the fi ve other forests, the litterfall pattern was multi-peak. The rank order of the eight forests, according to nutrient return mass with the exception of P, was different from the order when rank was according to total mass of litterfall. The highest annual N, K and Ca returns from total litterfall were noticed in the TSO, the CAF and the CUL, respectively. The amounts of P and Mg potentially returned to the soil were the highest in the PIM. The leaf fraction provided greater potential returns of N, P, K, Ca and Mg to the soil than other litter fractions. The results of this study demonstrate that natural forests have a greater capability for maintaining site productivity than the monoculture coniferous plantation, due to higher amount of above-ground litter coupled with greater nutrient returns; therefore conservation of natural forests is recommended as a practical measure in forest management to realize sustainable development of forestry in mountainous areas of southern China.