Economic gains of improving soil fertility and water holding capacity with clay application: the impact of soil remediation research in Northeast Thailand

被引：4

作者：

Saleth, Rathinasamy Maria ^{[1
,2
]}

Inocencio, Arlene ^{[3
]}

Noble, Andrew ^{[3
]}

Ruaysoongnern, Sawaeng ^{[4
]}

机构：

[1] Madras Inst Dev Studies, Madras, Tamil Nadu, India

[2] IWMI, Colombo, Sri Lanka

[3] IWMI SEA, Viangchan, Laos

[4] Khon Kaen Univ, Khon Kaen, Thailand

来源：

JOURNAL OF DEVELOPMENT EFFECTIVENESS | 2009年 / 1卷 / 03期

关键词：

bentonite; clay technology; farming system; impact assessment; impact pathway; matching method; Northeast Thailand; regression method;

D O I：

10.1080/19439340903105022

中图分类号：

F0 [经济学]; F1 [世界各国经济概况、经济史、经济地理]; C [社会科学总论];

学科分类号：

0201 ; 020105 ; 03 ; 0303 ;

摘要：

Using survey data collected from 250 farmers, this paper evaluates the impact of the Soil Remediation Research Project (SRRP) undertaken by International Water Management Institute (IWMI) in Northeast Thailand during 2002-2005. SRRP has demonstrated and promoted the application of clay as a quick and low-cost means for improving the fertility and water holding capacity of sandy soils. The impact evaluation suggests that the SRRP has a net present value (NPV) of US$0.7 million with a benefit-cost ratio (BCR) of 3.1 for the sample context and an NPV of US$99.5 million with a BCR of 317.7 for the larger context of the region.

引用

页码：336 / 352

页数：17