...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Catena: An Interdisciplinary Journal of Soil Science Hydrology-Geomorphology Focusing on Geoecology and Landscape Evolution >Dynamics of carbon, nitrogen, and phosphorus stocks and stoichiometry resulting from conversion of primary broadleaf forest to plantation and secondary forest in subtropical China
【24h】

Dynamics of carbon, nitrogen, and phosphorus stocks and stoichiometry resulting from conversion of primary broadleaf forest to plantation and secondary forest in subtropical China

机译：亚热带林林对种植和中林，碳，氮气和磷股和化学计量和化学计量的动态

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Large-scale primary native broadleaf forests (BF) have been converted to secondary forests (SF) and plantation forests (PF) in subtropical China over the past decades. However, how and what magnitude of plant and soil carbon (C), nitrogen (N), and phosphorus (P) stocks and stoichiometry are affected by forest conversion is still vague. Here, we addressed this issue by systematically measuring tree biomass and the C, N, and P concentrations in tree organs and soils (0-100 cm) collected from 300 plots in Fujian province. With forest conversion of BF to PF, the tree C, N, and P stocks declined by 43.8, 47.9, and 63.1%, respectively, and the soil C and N stocks across whole soil depth decreased by 19.1% and 13.0%, respectively, and these decreases were more evident after conversion of BF to PF than SF. However, soil P stock showed a tendency of decreasing at 0-20 cm soil depth but increasing at 20-100 cm soil depth following conversion of BF to SF and PF. This unconformity of the vertical pattern of P stock in contrast to C and N stocks, was perhaps due to higher C and N inputs and greater P uptake from the subsoil and its redistribution to the topsoil in BF than in SF and PF. The tree and soil C, N, and P stoichiometry was strongly related to tree biomass, indicating that tree biomass was a vital factor driving soil inputs and retention of nutrients, and thus affecting their stoichiometry. The leaf N:P ratios ranging from 16.7 to 17.2 at our study sites suggested that co-limitations of N and P for forest growth could occur in the studied region. Our results provided insights into the C, N, and P linkages between soils and trees as affected by forest conversion, and advised that predicting these linkages could be an effective approach to identify the impacts of forest conversion, thereby implementing targeted conservation and rehabilitation actions.
机译：在过去的几十年里，大规模的主要原产地阔叶森林（BF）已被转化为亚热带副森林（SF）和种植园森林（PF）。然而，植物和土壤碳（C），氮（N）和磷（P）股和化学计量的影响如何以及哪些幅度仍然模糊。在这里，我们通过系统地测量树木生物质和C树干和C，N和P浓度（0-100厘米）从福建省300块收集的土壤（0-100厘米）来解决这一问题。随着BF的森林转化为PF，树C，N和P股票分别下降43.8,47.9和63.1％，整个土壤深度的土壤C和N股分别降低了19.1％和13.0％，在比SF转化为PF后，这些降低更明显。然而，土壤P库存显示​​在0-20cm的土壤深度下减小的趋势，但在BF转化为SF和PF后，在20-100cm的土壤深度下增加。与C和N股相比，这种垂直模式的不整合性与C和N股相比，从底层的C和N个输入和更高的P比于SF和PF中的底层的再分配，也许是由于Subsoil的再分配，而不是在SF和PF中。树和土壤C，N和P化学计量与树生物质强烈有关，表明树生物质是驱动土壤投入和营养素保留的重要因素，从而影响其化学计量。在我们的研究网站的16.7至17.2的叶片N：P比率表明，在研究的地区可能发生N和P的森林生长的N和P的共限。我们的结果为受森林转换而受到的土壤和树木之间的C，N和树木之间的见解，并建议预测这些联系可能是确定森林转换影响的有效方法，从而实施有针对性的保护和康复行动。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号