語系:
繁體中文
English
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
FindBook
Google Book
Amazon
博客來
Use of Ground and Air-Based Photogrammetry for Soil Erosion Assessment.
紀錄類型:
書目-電子資源 : Monograph/item
正題名/作者:
Use of Ground and Air-Based Photogrammetry for Soil Erosion Assessment./
作者:
Candido, Bernardo Moreira.
出版者:
Ann Arbor : ProQuest Dissertations & Theses, : 2019,
面頁冊數:
124 p.
附註:
Source: Dissertations Abstracts International, Volume: 82-06, Section: B.
Contained By:
Dissertations Abstracts International82-06B.
標題:
Soil sciences. -
電子資源:
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28277631
ISBN:
9798691267420
Use of Ground and Air-Based Photogrammetry for Soil Erosion Assessment.
Candido, Bernardo Moreira.
Use of Ground and Air-Based Photogrammetry for Soil Erosion Assessment.
- Ann Arbor : ProQuest Dissertations & Theses, 2019 - 124 p.
Source: Dissertations Abstracts International, Volume: 82-06, Section: B.
Thesis (Ph.D.)--Lancaster University (United Kingdom), 2019.
This item must not be sold to any third party vendors.
Water erosion affects all types of soils around the world at different intensities. However, in tropics water erosion is the most important form of soil erosion and has received much concern in the last decades. The major challenge in soil conservation is the development and implementation of strategies to mitigate the erosion processes in urban and rural areas. Thus, understanding the processes involved in each type of water erosion (sheet, rill and gully erosion), as well as its quantification, is a key factor in managing and developing soil conservation and erosion mitigation strategies. In that way, this thesis aims to investigate the efficiency of ground and air-based photogrammetry for soil erosion assessment, as well as to address some gaps in our understanding of the evolution of erosive processes in its different forms of occurrence. In doing so, we evaluated the factors that influence the development of erosion in micro and macro scales, with experiments in the laboratory and in the field. In the first chapter, it was evaluated the influence of gradient change and runoff volumes on rill erosion process, using digital close-range photogrammetry in a laboratory soil flume. In addition, morphological rill parameters were estimated to allow a better understanding of the rill erosion behaviour under different treatments. The results showed that the flow velocity in rills increased with water flow and slope, showing a strong correlation with the amount of rill erosion. On steep slopes the soil erosion was dominated by the rill erosion with less rill network density while, on low slopes, there were other types of soil erosion occurring together with rill erosion, causing the reduction of soil loss due to rill erosion. The digital close-range photogrammetry technique provided millimetric precision, which is sufficient for rill erosion investigations. In the second chapter aimed to evaluate the efficiency of SfM based on UAV images in obtaining accurate measurements of soil loss in areas of sheet erosion, under natural rainfall, where channelized erosion is not the principal mechanism. The measurements acquired from SfM were compared to the sediments collected in each soil erosion plots. The results of the soil losses obtained by UAV-SfM presented a high correlation with the sediments collected in the plots. This is of great relevance in the context of the monitoring and modelling of water erosion, since the quantification of soil loss around the world is mainly done using plots, a method that presents high operational cost. In addition, the study of laminar erosion through the UAV-SfM allows not only to calculate the soil loss values but to visualize the spatial variation of the erosion process (detachment, transport and deposition) practically in real time along the area. In the third chapter it was evaluated the application of UAV-SfM technique in a gully system. For the first time, a study was carried out evaluating the relative contribution of the different types of erosion (sheet, rill and gully sidewall) in the gully development. This was possible due to the millimetric level of precision of the point clouds, allowing to evaluate even the contribution of the laminar erosion, which is new in gullies studies. As a result, it was possible to quantify sediments volumes stored in the channels and lost from the gully system, as well as to determine the main sediment sources. The study suggests that the main source of sediments in the gully was due to the mass movements, followed by rills and sheet erosion. The UAV-SfM proved to be effective in the gully monitoring. The results findings by this thesis indicate that the use of ground and air-based photogrammetry are precise tools in detecting soil surface changes and can be used to assess water erosion in its various forms of occurrence in nature. In addition, the UAV-SfM has proven to be a very useful technique for monitoring soil erosion over time, especially in hard-to-reach areas.
ISBN: 9798691267420Subjects--Topical Terms:
2122699
Soil sciences.
Subjects--Index Terms:
Photogrammetry
Use of Ground and Air-Based Photogrammetry for Soil Erosion Assessment.
LDR
:05228nmm a2200373 4500
001
2349258
005
20220920133703.5
008
241004s2019 ||||||||||||||||| ||eng d
020
$a
9798691267420
035
$a
(MiAaPQ)AAI28277631
035
$a
(MiAaPQ)Lancaster_137234
035
$a
AAI28277631
040
$a
MiAaPQ
$c
MiAaPQ
100
1
$a
Candido, Bernardo Moreira.
$3
3688665
245
1 0
$a
Use of Ground and Air-Based Photogrammetry for Soil Erosion Assessment.
260
1
$a
Ann Arbor :
$b
ProQuest Dissertations & Theses,
$c
2019
300
$a
124 p.
500
$a
Source: Dissertations Abstracts International, Volume: 82-06, Section: B.
500
$a
Advisor: Silva, Marx;Quinton, John;James, Mike.
502
$a
Thesis (Ph.D.)--Lancaster University (United Kingdom), 2019.
506
$a
This item must not be sold to any third party vendors.
520
$a
Water erosion affects all types of soils around the world at different intensities. However, in tropics water erosion is the most important form of soil erosion and has received much concern in the last decades. The major challenge in soil conservation is the development and implementation of strategies to mitigate the erosion processes in urban and rural areas. Thus, understanding the processes involved in each type of water erosion (sheet, rill and gully erosion), as well as its quantification, is a key factor in managing and developing soil conservation and erosion mitigation strategies. In that way, this thesis aims to investigate the efficiency of ground and air-based photogrammetry for soil erosion assessment, as well as to address some gaps in our understanding of the evolution of erosive processes in its different forms of occurrence. In doing so, we evaluated the factors that influence the development of erosion in micro and macro scales, with experiments in the laboratory and in the field. In the first chapter, it was evaluated the influence of gradient change and runoff volumes on rill erosion process, using digital close-range photogrammetry in a laboratory soil flume. In addition, morphological rill parameters were estimated to allow a better understanding of the rill erosion behaviour under different treatments. The results showed that the flow velocity in rills increased with water flow and slope, showing a strong correlation with the amount of rill erosion. On steep slopes the soil erosion was dominated by the rill erosion with less rill network density while, on low slopes, there were other types of soil erosion occurring together with rill erosion, causing the reduction of soil loss due to rill erosion. The digital close-range photogrammetry technique provided millimetric precision, which is sufficient for rill erosion investigations. In the second chapter aimed to evaluate the efficiency of SfM based on UAV images in obtaining accurate measurements of soil loss in areas of sheet erosion, under natural rainfall, where channelized erosion is not the principal mechanism. The measurements acquired from SfM were compared to the sediments collected in each soil erosion plots. The results of the soil losses obtained by UAV-SfM presented a high correlation with the sediments collected in the plots. This is of great relevance in the context of the monitoring and modelling of water erosion, since the quantification of soil loss around the world is mainly done using plots, a method that presents high operational cost. In addition, the study of laminar erosion through the UAV-SfM allows not only to calculate the soil loss values but to visualize the spatial variation of the erosion process (detachment, transport and deposition) practically in real time along the area. In the third chapter it was evaluated the application of UAV-SfM technique in a gully system. For the first time, a study was carried out evaluating the relative contribution of the different types of erosion (sheet, rill and gully sidewall) in the gully development. This was possible due to the millimetric level of precision of the point clouds, allowing to evaluate even the contribution of the laminar erosion, which is new in gullies studies. As a result, it was possible to quantify sediments volumes stored in the channels and lost from the gully system, as well as to determine the main sediment sources. The study suggests that the main source of sediments in the gully was due to the mass movements, followed by rills and sheet erosion. The UAV-SfM proved to be effective in the gully monitoring. The results findings by this thesis indicate that the use of ground and air-based photogrammetry are precise tools in detecting soil surface changes and can be used to assess water erosion in its various forms of occurrence in nature. In addition, the UAV-SfM has proven to be a very useful technique for monitoring soil erosion over time, especially in hard-to-reach areas.
590
$a
School code: 0416.
650
4
$a
Soil sciences.
$3
2122699
650
4
$a
Remote sensing.
$3
535394
650
4
$a
Agricultural engineering.
$3
3168406
653
$a
Photogrammetry
653
$a
Soil Erosion Assessment
653
$a
Structure-from-motion
653
$a
Unmanned aerial vehicle
690
$a
0799
690
$a
0481
690
$a
0539
710
2
$a
Lancaster University (United Kingdom).
$3
1294170
773
0
$t
Dissertations Abstracts International
$g
82-06B.
790
$a
0416
791
$a
Ph.D.
792
$a
2019
793
$a
English
856
4 0
$u
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28277631
筆 0 讀者評論
館藏地:
全部
電子資源
出版年:
卷號:
館藏
1 筆 • 頁數 1 •
1
條碼號
典藏地名稱
館藏流通類別
資料類型
索書號
使用類型
借閱狀態
預約狀態
備註欄
附件
W9471696
電子資源
11.線上閱覽_V
電子書
EB
一般使用(Normal)
在架
0
1 筆 • 頁數 1 •
1
多媒體
評論
新增評論
分享你的心得
Export
取書館
處理中
...
變更密碼
登入