MODEL OF THE LINKAGE BETWEEN LAND COVER CHANGES TO WATER DISCHARGE AND FOOD PRODUCTIVITY: THE CASE OF THE KONAWEHA WATERSHED IN INDONESIA

Jasman; Muh. Syarif; Juharsah; Ahmad Syarif Sukri; Edward Ngii; Hasddin

doi:10.2298/IJGI2302169M

Authors

Jasman Lakidende University, Faculty of Engineering, Department of Civil Engineering, Unaaha
Muh. Syarif Halu Oleo University, Faculty of Economics and Business, Department of Management, Kendari
Juharsah Halu Oleo University, Faculty of Economics and Business, Department of Management, Kendari
Ahmad Syarif Sukri Halu Oleo University, Faculty of Engineering, Department of Civil Engineering, Kendari
Edward Ngii Halu Oleo University, Faculty of Engineering, Department of Civil Engineering, Kendari
Hasddin Lakidende University, Faculty of Engineering, Department of Urban and Regional Planning, Unaaha

DOI:

https://doi.org/10.2298/IJGI2302169M

Keywords:

model, land cover, water discharge, food productivity

Abstract

Changes in watershed land cover have an impact on reducing water discharge, as well as other derivative impacts such as the productivity of food crops, horticulture, and plantations. This study tries to offer a conceptual model of the effect of changes in watershed land cover, water discharge, and food productivity through food crops, horticultural crops, and plantation crops. This study uses a quantitative approach based on time series data between 2002 and 2021. Data is analyzed using a structural model approach with SEM-SmartPLS software. As a result, changes in land cover have a significant effect on water discharge, but they have no effect on food productivity. Water discharge has a significant effect on food production, and changes in land cover greatly affect food productivity through the role of intermediary variables (mediation) of water discharge. In 2041, changes in land cover can reduce water discharge by around 47.9%. Then the water discharge is estimated to have an impact on the productivity of food crops by 62.3%, vegetable productivity by around 45.7%, and plantation crop productivity by around 72.7%.

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