• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Wetlands >Salt Marsh Aboveground Production in New England Estuaries in Relation to Nitrogen Loading and Environmental Factors
【24h】

Salt Marsh Aboveground Production in New England Estuaries in Relation to Nitrogen Loading and Environmental Factors

机译：新英格兰河口盐沼地上产量与氮负荷和环境因素的关系

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

Aboveground production responses of Spartina alterniflora and S. patens in estuaries in Massachusetts, USA were assessed in relation to temporal (date) and physical (elevation and distance from creek edge) factors as well as nitrogen loading using stem N-15, water column dissolved inorganic nitrogen (DIN), and upland nitrogen loading as nitrogen input proxies. All nitrogen input proxies had negative relationships with S. alterniflora stem density while stem height and biomass increased or were unaffected. Nitrogen content of S. alterniflora increased with stem N-15 but was not related to DIN or upland nitrogen loading proxies. For S. patens, stem density, biomass, and height all increased with stem N-15 while nitrogen content decreased. Stem density and biomass also varied with elevation. For S. alterniflora, this relationship was parabolic for stem density and declined linearly for biomass. Both stem density and biomass increased linearly for S. patens. Across the growing season, S. alterniflora stem density decreased, S. patens biomass increased, and nitrogen content declined for both Spartina species. S. alterniflora stem height also decreased with distance from the creek edge. Results show different responses for Spartina species to upland and water column nitrogen inputs and provide complementary information to results from controlled fertilization experiments.
机译：在美国马萨诸塞州河口的互花米草和S. patens的地上生产响应与时间（日期）和物理（海拔和距小溪边缘的距离）因素以及使用茎杆N-15的氮负荷，水柱溶解的相关性进行了评估无机氮（DIN）和高地氮负荷作为氮输入代理。所有氮输入代理与互花米草茎密度呈负相关，而茎高和生物量增加或不受影响。互花米草的氮含量随茎N-15的增加而增加，但与DIN或高地氮负荷量无关。对于S. patens，茎密度，生物量和高度均随茎N-15的增加而氮含量降低。茎密度和生物量也随海拔升高而变化。对于互花米草，这种关系对于茎密度呈抛物线关系，而对生物量呈线性下降。 S. patens的茎密度和生物量均线性增加。在整个生长季节中，两种斯巴迪草种的互花米草茎密度均下降，帕滕酵母生物量增加，氮含量下降。互花米草的茎高也随着距小溪边缘的距离而降低。结果显示，斯巴地亚物种对旱地和水柱氮输入的反应不同，并为受控施肥实验的结果提供了补充信息。

著录项

  • 来源
    《Wetlands》 |2018年第6期|1327-1340|共14页
  • 作者

    Logan John M.;

  • 作者单位

    Massachusetts Div Marine Fisheries, 836 South Rodney French Blvd, New Bedford, MA 02744 USA;

  • 收录信息 美国《科学引文索引》(SCI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Eutrophication; N-15; Spartina; Stem biomass; Stem density;

    机译：富营养化;N-15;斯巴地那;茎生物量;茎密度;

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