Risk prediction of salinity stress and enhancement of resilience to agricultural productivity in coastal area

2016 Fiscal Year Final Research Report

• Project/Area Number: 26450345
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Rural environmental engineering/Planning
• Research Institution: Saga University
• Principal Investigator: Yuge Kozue 佐賀大学, 農学部, 准教授 (70341287)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 土壌水分および溶質輸送 / 塩害 / 塩類集積 / 塩水楔 / 非定常流解析 / 干拓 / 蒸発散 / 暗渠

Outline of Final Research Achievements

The aim of this study is to predict the risk of salinity stress at crop fields in coastal agricultural fields and to suggest the water management methods for the stress reduction and enhancement of agricultural productivity. Current and solute analysis in canal network was performed in Isahaya Central Polder, Nagasaki Prefecture. A numerical model was introduced using SWAP (Soil Water Atmosphere Plant) model to predict the soil water and solute movements under various cultivation in a reclaimed field. The model accuracy were verified by result of measurement soil moisture condition at a agricultural field located in Isahaya Central Polder. Stresses due to wetness, drought and salinity were quantified using difference between potential transpiration rate and actual transpiration rate. The water and salinity stress were predicted under the scenario for drought year and groundwater salination and water management methods for reduction of the stresses could be devised.

Free Research Field

灌漑工学，利水工学