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

Soil microstructure and soil erodibi...

Sunohara, Mark Douglas.

FindBook

Google Book

Amazon

博客來

Soil microstructure and soil erodibility at IBSRAM Sloping Lands management sites in South-east Asia (Thailand, Laos, Vietnam, Philippines, Malaysia).

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Soil microstructure and soil erodibility at IBSRAM Sloping Lands management sites in South-east Asia (Thailand, Laos, Vietnam, Philippines, Malaysia)./
作者:	Sunohara, Mark Douglas.
面頁冊數:	103 p.
附註:	Source: Masters Abstracts International, Volume: 37-05, page: 1422.
Contained By:	Masters Abstracts International37-05.
標題:	Physical Geography. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=MQ36876
ISBN:	0612368769

Soil microstructure and soil erodibility at IBSRAM Sloping Lands management sites in South-east Asia (Thailand, Laos, Vietnam, Philippines, Malaysia).
Sunohara, Mark Douglas.

Soil microstructure and soil erodibility at IBSRAM Sloping Lands management sites in South-east Asia (Thailand, Laos, Vietnam, Philippines, Malaysia). - 103 p.

Source: Masters Abstracts International, Volume: 37-05, page: 1422.

Thesis (M.A.)--Carleton University (Canada), 1999.

Associations among soil microstructural type and behaviour, soil erodibility, and soil erosion were investigated at seven research sites of the International Board for Soil Research and Management (IBSRAM) Asialand Sloping Lands Network in Southeast Asia (Chiang Mai and Chiang Rai, Thailand; Vientiane, Laos; Hoa Son, Vietnam; Los Banos and Mabini, Philippines; and Kuala Dal, Malaysia). Soil microstructure was investigated on thin sections prepared from undisturbed samples and microstructural behaviour and other soil properties were determined on bulk samples taken from the surface immediately adjacent to undisturbed samples. The sites were grouped into three clusters according to their microstructural behaviours: stable microaggregates composed of stable domains; unstable microaggregates composed of stable domains; and unstable microaggregates composed of unstable domains. Erosion and rainfall data indicate that structural stability affects the susceptibility to detachment by raindrop impact and that microaggregate or domain size influence the susceptibility to transport by runoff. The nature of the influence of microstructure on the severity of soil loss was not always the same at the various sites. The Chiang Mai and Vietnam sites have unstable microaggregates which disperse into stable domains with low transportability and experience the least soil loss per unit rainfall. At the Laos site a stable soil structure with low detachability and transportability experienced moderate soil loss per unit rainfall under high erosivity conditions. The unstable soil structures at the Los Banos and Mabini sites are easily dispersed and transported causing moderate soil loss per unit rainfall. At the Chiang Rai site stable microaggregates, which are easily detached and transported, experienced very high soil loss per unit rainfall.

ISBN: 0612368769Subjects--Topical Terms:

893400
Physical Geography.

Soil microstructure and soil erodibility at IBSRAM Sloping Lands management sites in South-east Asia (Thailand, Laos, Vietnam, Philippines, Malaysia).
LDR:02858nmm 2200289 4500 001 1816934
005 20060803103834.5
008 130610s1999 eng d
020 $a 0612368769
035 $a (UnM)AAIMQ36876
035 $a AAIMQ36876
040 $a UnM $c UnM
100 1 $a Sunohara, Mark Douglas. $3 1906303
245 1 0 $a Soil microstructure and soil erodibility at IBSRAM Sloping Lands management sites in South-east Asia (Thailand, Laos, Vietnam, Philippines, Malaysia).
300 $a 103 p.
500 $a Source: Masters Abstracts International, Volume: 37-05, page: 1422.
500 $a Advisers: Michael F. Fox; J. Kenneth Torrance.
502 $a Thesis (M.A.)--Carleton University (Canada), 1999.
520 $a Associations among soil microstructural type and behaviour, soil erodibility, and soil erosion were investigated at seven research sites of the International Board for Soil Research and Management (IBSRAM) Asialand Sloping Lands Network in Southeast Asia (Chiang Mai and Chiang Rai, Thailand; Vientiane, Laos; Hoa Son, Vietnam; Los Banos and Mabini, Philippines; and Kuala Dal, Malaysia). Soil microstructure was investigated on thin sections prepared from undisturbed samples and microstructural behaviour and other soil properties were determined on bulk samples taken from the surface immediately adjacent to undisturbed samples. The sites were grouped into three clusters according to their microstructural behaviours: stable microaggregates composed of stable domains; unstable microaggregates composed of stable domains; and unstable microaggregates composed of unstable domains. Erosion and rainfall data indicate that structural stability affects the susceptibility to detachment by raindrop impact and that microaggregate or domain size influence the susceptibility to transport by runoff. The nature of the influence of microstructure on the severity of soil loss was not always the same at the various sites. The Chiang Mai and Vietnam sites have unstable microaggregates which disperse into stable domains with low transportability and experience the least soil loss per unit rainfall. At the Laos site a stable soil structure with low detachability and transportability experienced moderate soil loss per unit rainfall under high erosivity conditions. The unstable soil structures at the Los Banos and Mabini sites are easily dispersed and transported causing moderate soil loss per unit rainfall. At the Chiang Rai site stable microaggregates, which are easily detached and transported, experienced very high soil loss per unit rainfall.
590 $a School code: 0040.
650 4 $a Physical Geography. $3 893400
650 4 $a Agriculture, Soil Science. $3 1017824
690 $a 0368
690 $a 0481
710 2 0 $a Carleton University (Canada). $3 1018407
773 0 $t Masters Abstracts International $g 37-05.
790 1 0 $a Fox, Michael F., $e advisor
790 1 0 $a Torrance, J. Kenneth, $e advisor
790 $a 0040
791 $a M.A.
792 $a 1999
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=MQ36876