Village-level supply reliability of groundwater irrigation in rural China: Effects of climate variables and tubewell density
Purpose The purpose of this paper is to examine the status of the supply reliability of groundwater irrigation, and discuss how it is affected by climate change and tubewell density in rural China. Design/methodology/approach This study is based on a nine-province village survey and secondary clima...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Emerald Publishing Limited
2018
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/98401 |
| _version_ | 1855521509197479936 |
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| author | Li, Yanrong Wang, Jinxia Huang, Jikun Adhikari, Bihm You, Liangzhi |
| author_browse | Adhikari, Bihm Huang, Jikun Li, Yanrong Wang, Jinxia You, Liangzhi |
| author_facet | Li, Yanrong Wang, Jinxia Huang, Jikun Adhikari, Bihm You, Liangzhi |
| author_sort | Li, Yanrong |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Purpose
The purpose of this paper is to examine the status of the supply reliability of groundwater irrigation, and discuss how it is affected by climate change and tubewell density in rural China.
Design/methodology/approach
This study is based on a nine-province village survey and secondary climate data. A Tobit model (or censored regression model) was used to estimate the determinants of supply reliability of groundwater irrigation.
Findings
Results show that the supply reliability of groundwater irrigation was 89 percent on average in the past three years. The non-linear relationship in the econometric results revealed that the 30-year annual temperature significantly influenced the supply reliability of groundwater irrigation. When the temperature rises above the turning point (6.30°C), it shifts from a positive to a negative relationship with the supply reliability of groundwater irrigation. The 30-year annual temperature in eight of the nine provinces (i.e. except for Jilin Province) was higher than the turning point. If the temperature increases by 20°C in the future, other factors being constant, the supply reliability of groundwater irrigation will decline by 20 percent. However, if precipitation increases by 10 percent, the supply reliability of groundwater irrigation could improve by 3 percent, while reducing precipitation by 10 percent will lower the supply reliability of groundwater irrigation by 3 percent. Increasing the density of tubewells considerably improves the supply reliability of groundwater irrigation. However, although increasing the density of tubewells may yield enough groundwater for irrigation, this one-sided approach raises sustainability concerns.
Research limitations/implications
Although increasing the density of tubewells may ensure that enough groundwater is available for irrigation, such a conclusion is one sided, and sustainability concerns should be raised in assessing this method of creating supply reliability.
Originality/value
This paper improves the understanding of the impact of climate variables on agriculture irrigation and water supply reliability in the micro scale, and provides a scientific basis for relevant policy making. |
| format | Journal Article |
| id | CGSpace98401 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| publisher | Emerald Publishing Limited |
| publisherStr | Emerald Publishing Limited |
| record_format | dspace |
| spelling | CGSpace984012025-12-08T10:29:22Z Village-level supply reliability of groundwater irrigation in rural China: Effects of climate variables and tubewell density Li, Yanrong Wang, Jinxia Huang, Jikun Adhikari, Bihm You, Liangzhi supply balance groundwater capacity development water availability precipitation irrigation temperature climate change Purpose The purpose of this paper is to examine the status of the supply reliability of groundwater irrigation, and discuss how it is affected by climate change and tubewell density in rural China. Design/methodology/approach This study is based on a nine-province village survey and secondary climate data. A Tobit model (or censored regression model) was used to estimate the determinants of supply reliability of groundwater irrigation. Findings Results show that the supply reliability of groundwater irrigation was 89 percent on average in the past three years. The non-linear relationship in the econometric results revealed that the 30-year annual temperature significantly influenced the supply reliability of groundwater irrigation. When the temperature rises above the turning point (6.30°C), it shifts from a positive to a negative relationship with the supply reliability of groundwater irrigation. The 30-year annual temperature in eight of the nine provinces (i.e. except for Jilin Province) was higher than the turning point. If the temperature increases by 20°C in the future, other factors being constant, the supply reliability of groundwater irrigation will decline by 20 percent. However, if precipitation increases by 10 percent, the supply reliability of groundwater irrigation could improve by 3 percent, while reducing precipitation by 10 percent will lower the supply reliability of groundwater irrigation by 3 percent. Increasing the density of tubewells considerably improves the supply reliability of groundwater irrigation. However, although increasing the density of tubewells may yield enough groundwater for irrigation, this one-sided approach raises sustainability concerns. Research limitations/implications Although increasing the density of tubewells may ensure that enough groundwater is available for irrigation, such a conclusion is one sided, and sustainability concerns should be raised in assessing this method of creating supply reliability. Originality/value This paper improves the understanding of the impact of climate variables on agriculture irrigation and water supply reliability in the micro scale, and provides a scientific basis for relevant policy making. 2018-08-22 2018-12-03T10:08:36Z 2018-12-03T10:08:36Z Journal Article https://hdl.handle.net/10568/98401 en Limited Access Emerald Publishing Limited Li, Yanrong; Wang, Jinxia; Huang, Jikun; Adhikari, Bihm; and You, Liangzhi. 2018. Village-level supply reliability of groundwater irrigation in rural China: Effects of climate variables and tubewell density. China Agricultural Economic Review 10(3): 354-371. https://doi.org/10.1108/CAER-05-2017-0086 |
| spellingShingle | supply balance groundwater capacity development water availability precipitation irrigation temperature climate change Li, Yanrong Wang, Jinxia Huang, Jikun Adhikari, Bihm You, Liangzhi Village-level supply reliability of groundwater irrigation in rural China: Effects of climate variables and tubewell density |
| title | Village-level supply reliability of groundwater irrigation in rural China: Effects of climate variables and tubewell density |
| title_full | Village-level supply reliability of groundwater irrigation in rural China: Effects of climate variables and tubewell density |
| title_fullStr | Village-level supply reliability of groundwater irrigation in rural China: Effects of climate variables and tubewell density |
| title_full_unstemmed | Village-level supply reliability of groundwater irrigation in rural China: Effects of climate variables and tubewell density |
| title_short | Village-level supply reliability of groundwater irrigation in rural China: Effects of climate variables and tubewell density |
| title_sort | village level supply reliability of groundwater irrigation in rural china effects of climate variables and tubewell density |
| topic | supply balance groundwater capacity development water availability precipitation irrigation temperature climate change |
| url | https://hdl.handle.net/10568/98401 |
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