• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Plant and Soil >Dissolved organic carbon concentrations in four Norway spruce stands of different ages
【24h】

Dissolved organic carbon concentrations in four Norway spruce stands of different ages

机译：四个不同年龄的挪威云杉林中溶解的有机碳浓度

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

Boreal forests are increasing in age partly due to reduced logging and efficient wildfire control. As a result, they also stock more carbon. Whether increased forest C stock causes greater production of dissolved organic carbon (DOC) is uncertain. DOC in bulk precipitation, throughfall and soil water was studied in 10-, 30-, 60- and 120-year-old stands of Norway spruce (Picea abies (L.) Karst.) DOC concentrations in throughfall and O horizon soil water followed the order 10 < 30 < 60 = 120 and 10 = 30 < 120 < 60, respectively. DOC fluxes followed the order 10 = 30 < 60 = 120 in throughfall, while no significant difference between stands was found for O horizon soil water. Above-ground tree litter varied according to 10 < 30 < 60 = 120, a pattern identical to that for DOC concentrations in throughfall and resembling but not identical to that for DOC concentrations in O horizon soil water. This indicates additional sources for DOC in soil water. Seasonality in DOC concentrations was observed at the base of the O horizon, and seasonality in DOC fluxes in both throughfall and O horizon soil water. Our results suggest differences in the polarity of DOC between the 10-year stand and the others, which we interpret as reflecting the lack of grown trees and possibly the different vegetation on the 10-year stand.
机译：由于减少伐木和有效的野火控制，北方森林的年龄在增加。结果，他们还库存了更多的碳。不确定森林碳储量增加是否会导致更大的溶解有机碳（DOC）产生。在挪威云杉（云杉（Picea abies（L.）Karst。）的10、30、60和120年的林分中研究了大量降水，穿透水和土壤水中的DOC。顺序分别为10 <30 <60 = 120和10 = 30 <120 <60。 DOC流量在通流中的顺序为10 = 30 <60 = 120，而O层土壤水在林分之间没有发现显着差异。地上的树木凋落物根据10 <30 <60 = 120的变化而变化，该模式与通流中的DOC浓度相同且相似，但与O层土壤水中的DOC浓度不同。这表明土壤水中DOC的其他来源。在O地平线的底部观察到DOC浓度的季节性，而贯穿水和O地平线土壤水的DOC通量都有季节性。我们的结果表明10年展位和其他10年展位之间DOC极性的差异，我们将其解释为反映了10年展位上缺少生长的树木以及可能的不同植被。

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