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首页> 外文学位 >Soil Particle-size Distribution, Land Use Types, and Surface Water Quality in the Bayou Chene and Lacassine Bayou Watersheds in Southwestern Louisiana.
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Soil Particle-size Distribution, Land Use Types, and Surface Water Quality in the Bayou Chene and Lacassine Bayou Watersheds in Southwestern Louisiana.

机译：路易斯安那州西南部的巴约谢恩河和拉卡西因巴约流域的土壤粒径分布，土地利用类型和地表水质量。

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摘要

Bayou Chene and Lacassine Bayou in southwestern Louisiana are not meeting their designated use for fish and wildlife propagation and are included on the 303(d) list of impaired water bodies. The TMDL for DO in Lacassine Bayou was approved on February 25, 2000, and the TMDL for DO in Bayou Chene was approved on July 12, 2002. This study assessed seasonal trends in surface water quality, along with spatial trends in soil particle-size distribution and chemistry, in the watersheds of Bayou Chene and Lacassine Bayou. It also investigated the relationship between soil particle-size distribution and surface water quality and the relationship between land use types and surface water quality in the two watersheds. The methodology was composed of three parts: surface water quality monitoring was conducted during the rice growing season; soil samples were collected and analyzed for particle-size distribution and chemistry; and geospatial and statistical analyses were performed to assess the relationships between soil particle-size distribution, land use types, and surface water quality. Time series plots suggest that the decrease in DO between March 6, 2014 and June 1, 2014 is related to increases in temperature and turbidity. Soil particle-size distribution prediction maps, analysis of land use data, and surface water quality statistics suggest that greater turbidity, TSS, and TCS in the Bayou Chene watershed is related to a greater proportion of silt in soils and greater proportions of land used for rice, soybeans, and aquaculture (crawfish) production in that watershed. Future work should include more extensive soil sampling and year-round surface water quality monitoring to improve the validity of the geospatial and statistical analysis.
机译：路易斯安那州西南部的Bayou Chene和Lacassine Bayou没有达到指定的鱼类和野生动植物繁殖用途，被列入303（d）受损水体清单。 Lacassine Bayou中溶解氧的TMDL于2000年2月25日获得批准，Bayou Chene中溶解氧的TMDL于2002年7月12日获得批准。该研究评估了地表水质量的季节性趋势以及土壤粒径的空间趋势。分布和化学，在Bayou Chene和Lacassine Bayou的流域。还研究了两个流域的土壤粒径分布与地表水质量之间的关系，以及土地利用类型与地表水质量之间的关系。该方法包括三部分：在水稻生长期进行地表水质量监测；在水稻生长期进行地表水监测。收集土壤样品并进行粒度分布和化学分析；并进行了地理空间和统计分析，以评估土壤粒径分布，土地利用类型和地表水质量之间的关系。时间序列图表明，在2014年3月6日至2014年6月1日之间DO的减少与温度和浊度的增加有关。土壤粒度分布预测图，土地利用数据分析和地表水水质统计数据表明，Bayou Chene流域的浊度，TSS和TCS越大，与土壤中泥沙的比例越大，用于耕作的土地的比例越大有关。该流域的水稻，大豆和水产养殖（螯虾）产量。未来的工作应包括更广泛的土壤采样和全年地表水水质监测，以提高地理空间和统计分析的有效性。

著录项

  • 作者

    Moore, Keith D.;

  • 作者单位

    University of Louisiana at Lafayette.;

  • 授予单位 University of Louisiana at Lafayette.;
  • 学科 Environmental geology.;Hydrologic sciences.;Environmental science.
  • 学位 M.S.
  • 年度 2015
  • 页码 127 p.
  • 总页数 127
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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