東華大學圖書館 |

語系: 繁體中文

說明(常見問題)

回圖書館首頁

手機版館藏查詢

登入

回首頁

切換: 標籤 | MARC模式 | ISBD

Potential Impacts of Wildfires on So...

Rittiron, Supasiri.

FindBook

Google Book

Amazon

博客來

Potential Impacts of Wildfires on Soil and Water Chemistry in the San Gabriel Mountains, California.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Potential Impacts of Wildfires on Soil and Water Chemistry in the San Gabriel Mountains, California./
作者:	Rittiron, Supasiri.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2020,
面頁冊數:	45 p.
附註:	Source: Masters Abstracts International, Volume: 82-05.
Contained By:	Masters Abstracts International82-05.
標題:	Hydrologic sciences. -
電子資源:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=27959810
ISBN:	9798684652745

Potential Impacts of Wildfires on Soil and Water Chemistry in the San Gabriel Mountains, California.
Rittiron, Supasiri.

Potential Impacts of Wildfires on Soil and Water Chemistry in the San Gabriel Mountains, California. - Ann Arbor : ProQuest Dissertations & Theses, 2020 - 45 p.

Source: Masters Abstracts International, Volume: 82-05.

Thesis (M.S.)--California State University, Los Angeles, 2020.

This item must not be sold to any third party vendors.

Increase in contaminants in soil caused by wildfires is poorly understood, despite it being a significant source of pollutants to receiving waters and reservoirs (Abraham et al., 2017). This study assesses the potential longer-term impacts of a small-scale wildfire that occurred in September 2018 on soil and leachate chemistry in the San Gabriel Mountains, Los Angeles County, California. Soils were collected from five sites within the burned and unburned areas in March 2019, following the post-fire runoff, for sediment and total element analyses. Batch leaching tests were conducted at different temperatures to determine the extent of size partitioning and mobilization of the major (Na, Mg, Al, K, Ca, and Fe) and minor/trace (Mn, Cu, Zn, Cr, and As) elements in order to understand solute transport as a result of changes in chemical bonding and physical characteristics of the soils. The results showed that burned soils were relatively finer than the unburned soils. For soil chemistry, the burned and unburned soils had similar composition of major and minor elements with the average range of the four interested minor elements being between 105 and 1,250 ppm, except As (4 ppm). Nevertheless, the batch leaching tests showed burned soils had significantly higher concentrations for some elements (e.g. Mg and Ca by more than six-fold and sevenfold, respectively, compared to that of the unburned soils within four-week period). These results potentially imply that size partitioning and the rate of the elements released into the water, could be impacted. Chromium amended experiments showed the opposite trend with Cr(VI) concentrations decreasing over time for both burned and non-burned soils. The was likely due to sorption of Cr(VI). These results would be valuable for predicting the fate of the contaminants and broader impacts could also include more effective pre- and post-fire mitigation plans.

ISBN: 9798684652745Subjects--Topical Terms:

3168407
Hydrologic sciences.
Subjects--Index Terms:

Wildfire

Potential Impacts of Wildfires on Soil and Water Chemistry in the San Gabriel Mountains, California.
LDR:03055nmm a2200361 4500 001 2279699
005 20210823083422.5
008 220723s2020 ||||||||||||||||| ||eng d
020 $a 9798684652745
035 $a (MiAaPQ)AAI27959810
035 $a AAI27959810
040 $a MiAaPQ $c MiAaPQ
100 1 $a Rittiron, Supasiri. $3 3558170
245 1 0 $a Potential Impacts of Wildfires on Soil and Water Chemistry in the San Gabriel Mountains, California.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2020
300 $a 45 p.
500 $a Source: Masters Abstracts International, Volume: 82-05.
500 $a Advisor: Ellis, Andre.
502 $a Thesis (M.S.)--California State University, Los Angeles, 2020.
506 $a This item must not be sold to any third party vendors.
520 $a Increase in contaminants in soil caused by wildfires is poorly understood, despite it being a significant source of pollutants to receiving waters and reservoirs (Abraham et al., 2017). This study assesses the potential longer-term impacts of a small-scale wildfire that occurred in September 2018 on soil and leachate chemistry in the San Gabriel Mountains, Los Angeles County, California. Soils were collected from five sites within the burned and unburned areas in March 2019, following the post-fire runoff, for sediment and total element analyses. Batch leaching tests were conducted at different temperatures to determine the extent of size partitioning and mobilization of the major (Na, Mg, Al, K, Ca, and Fe) and minor/trace (Mn, Cu, Zn, Cr, and As) elements in order to understand solute transport as a result of changes in chemical bonding and physical characteristics of the soils. The results showed that burned soils were relatively finer than the unburned soils. For soil chemistry, the burned and unburned soils had similar composition of major and minor elements with the average range of the four interested minor elements being between 105 and 1,250 ppm, except As (4 ppm). Nevertheless, the batch leaching tests showed burned soils had significantly higher concentrations for some elements (e.g. Mg and Ca by more than six-fold and sevenfold, respectively, compared to that of the unburned soils within four-week period). These results potentially imply that size partitioning and the rate of the elements released into the water, could be impacted. Chromium amended experiments showed the opposite trend with Cr(VI) concentrations decreasing over time for both burned and non-burned soils. The was likely due to sorption of Cr(VI). These results would be valuable for predicting the fate of the contaminants and broader impacts could also include more effective pre- and post-fire mitigation plans.
590 $a School code: 0962.
650 4 $a Hydrologic sciences. $3 3168407
650 4 $a Soil sciences. $3 2122699
650 4 $a Physical geography. $3 516662
653 $a Wildfire
653 $a Soil chemistry
653 $a Water chemistry
653 $a San Gabriel Mountains
690 $a 0388
690 $a 0368
690 $a 0481
710 2 $a California State University, Los Angeles. $b Geosciences and Environment. $3 3558171
773 0 $t Masters Abstracts International $g 82-05.
790 $a 0962
791 $a M.S.
792 $a 2020
793 $a English
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=27959810