...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environmental Management >Landscape Influences on Headwater Streams on Fort Stewart, Georgia, USA
【24h】

Landscape Influences on Headwater Streams on Fort Stewart, Georgia, USA

机译：景观对美国乔治亚州斯图尔特堡上游源流的影响

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Military landscapes represent a mixture of undisturbed natural ecosystems, developed areas, and lands that support different types and intensities of military training. Research to understand water-quality influences of military landscapes usually involves intensive sampling in a few watersheds. In this study, we developed a survey design of accessible headwater watersheds intended to improve our ability to distinguish land-water relationships in general, and training influences, in particular, on Fort Stewart, GA. We sampled and analyzed water from watershed outlets. We successfully developed correlative models for total suspended solids (TSS), total nitrogen (TN), organic carbon (OC), and organic nitrogen (ON), which dominated in this blackwater ecosystem. TSS tended to be greater in samples after rainfall and during the growing season, and models that included %Wetland suggested a "build-and-flush" relationship. We also detected a positive association between TSS and tank-training, which suggests a need to intercept sediment-laden runoff from training areas. Models for OC showed a negative association with %Grasslarid. TN and ON both showed negative associations with %Grassland, %Wetland, and %Forest. Unexpected positive associations were observed between OC and equipment-training activity and between ON and %Bare ground + Roads. Future studies that combine our survey-based approach with more intensive monitoring of the timing and intensity of training would be needed to better understand the mechanisms for these empirical relationships involving military training. Looking beyond local effects on Fort Stewart streams, we explore questions about how exports of OC and nitrogen from coastal military installations ultimately influence estuaries downstream.
机译：军事景观代表了不受干扰的自然生态系统，发达地区以及支持不同类型和强度的军事训练的土地的混合物。了解军事景观水质影响的研究通常涉及在一些集水区进行密集采样。在这项研究中，我们开发了可到达的源头集水区的调查设计，旨在提高我们区分一般水陆关系以及培训影响的能力，特别是对乔治亚州斯图尔特堡的影响。我们对流域出口的水进行了采样和分析。我们成功开发了在该黑水生态系统中占主导地位的总悬浮固体（TSS），总氮（TN），有机碳（OC）和有机氮（ON）的相关模型。降雨后和生长期期间，样品中的TSS倾向于更大，并且包含％Wetland的模型建议“建立并冲洗”关系。我们还发现，TSS与储罐训练之间存在正相关关系，这表明有必要拦截来自训练区域的充满泥沙的径流。 OC模型显示出与％Grasslarid负相关。 TN和ON均与％草地，％湿地和％森林呈负相关。在OC和设备培训活动之间以及ON和％Bare Ground + Roads之间观察到意外的正相关。未来的研究需要结合我们基于调查的方法和对训练时间和强度的更深入监控，以更好地理解涉及军事训练的这些经验关系的机制。除了对斯图尔特堡河的局部影响外，我们探索有关沿海军事设施的OC和氮气出口最终如何影响下游河口的问题。

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