Water footprint of maize in thailand

Q3 Engineering

Engineering and Applied Science Research Pub Date : 2013-05-15 DOI:10.5481/KKUENJ.2013.40.1.8

Thippapa Sukumalchart, A. Pornprommin, Surachai Lipiwattanakam

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引用次数: 2

Abstract

Thailand is the third largest net virtual water exporter in relation to crop trade with the volume of 47 billion m3/yr. Thus, one of the reasons of water scarcity in Thailand is possibly due to the export of the agricultural sector. Maize is one of twelve economic field crops of Thailand, which is essential to the stock feed industry. In this study, water footprint of maize in Thailand was calculated in details by using the monthly production statistics, daily Meteorological date and crop coefficient experimented in Thailand. There are 3 steps in the computation as follows: 1. Calculate the maize evapotranspiration 2. Evaluate the crop water use by the soil water balance method in root zone 3. With the crop yield and fertilization data, water footprint is calculated. The results of this study show that the country-averaged water footprint of maize in Thailand equals to 1,132 m3/ton comprised of 894 m3/ton green and 237 m3/ton grey water footprints. Since maize cultivation is mostly in the rain-fed area (99.2%), the blue water footprint in this study. Is negligible Udonthani province has the highest water footprint of maize (1,368 m3/ton), while Phichit the lowest (953 m3/ton). Comparing with the results of Mekonnen and Hoekstra (2010), this study shows the similar value of the country-averaged green water footprint of maize. However, the grey water footprint was found to about double of previous study.

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泰国玉米的水足迹

在作物贸易方面，泰国是第三大虚拟净水出口国，年出口量为470亿立方米。因此，泰国缺水的原因之一可能是由于农业部门的出口。玉米是泰国12种经济作物之一，对饲料工业至关重要。本研究利用泰国的月度产量统计数据、每日气象数据和作物系数进行试验，详细计算了泰国玉米的水足迹。计算过程分为三个步骤:1.计算过程;计算玉米的蒸散量。采用根区土壤水分平衡法评价作物水分利用。利用作物产量和施肥数据，计算水足迹。本研究结果表明，泰国玉米的全国平均水足迹为1132立方米/吨，其中绿色水足迹为894立方米/吨，灰色水足迹为237立方米/吨。由于玉米种植主要在雨养地区(99.2%)，本研究的蓝水足迹。乌东他尼省的玉米水足迹最高(1368立方米/吨)，而菲切特省最低(953立方米/吨)。与Mekonnen和Hoekstra(2010)的结果相比，本研究显示玉米的国家平均绿色水足迹值相似。然而，发现灰水足迹大约是以前研究的两倍。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Engineering and Applied Science Research Engineering-Engineering (all)

CiteScore

2.10

自引率

0.00%

发文量

审稿时长

11 weeks

期刊介绍： Publication of the journal started in 1974. Its original name was “KKU Engineering Journal”. English and Thai manuscripts were accepted. The journal was originally aimed at publishing research that was conducted and implemented in the northeast of Thailand. It is regarded a national journal and has been indexed in the Thai-journal Citation Index (TCI) database since 2004. The journal now accepts only English language manuscripts and became open-access in 2015 to attract more international readers. It was renamed Engineering and Applied Science Research in 2017. The editorial team agreed to publish more international papers, therefore, the new journal title is more appropriate. The journal focuses on research in the field of engineering that not only presents highly original ideas and advanced technology, but also are practical applications of appropriate technology.