TY - JOUR
T1 - Improvement of the ESA CCI Land cover maps for water balance analysis in tropical regions
T2 - A case study in the Muda River Basin, Malaysia
AU - Tan, Mou Leong
AU - Tew, Yi Lin
AU - Chun, Kwok Pan
AU - Samat, Narimah
AU - Shaharudin, Shazlyn Milleana
AU - Mahamud, Mohd Amirul
AU - Tangang, Fredolin T.
N1 - Funding Information:
This research was funded by the Ministry of Higher Education Malaysia under Long-term Research Grant Scheme project 2, grant number LRGS/1/2020/UKM-USM/01/6/2 which is under the program of LRGS/1/2020/UKM/01/6. This research was supported in part with Kurita Asia Research Grant (20Pmy024-K19) provided by Kurita Water and Environment Foundation. Thanks to the Malaysian Meteorological Department (MMD), Department of Irrigation and Drainage (DID) Malaysia, Ministry of Agriculture and Agro-based Industry Malaysia (MOA), Muda Agricultural Development Authority (MADA) for providing data that required in the model development. Special thanks to the ESA CCI LC, AOPD, SRTM, FAO and SWAT developers for distributing their data and tool freely to the public.
Funding Information:
This research was funded by the Ministry of Higher Education Malaysia under Long-term Research Grant Scheme project 2, grant number LRGS/1/2020/UKM-USM/01/6/2 which is under the program of LRGS/1/2020/UKM/01/6. This research was supported in part with Kurita Asia Research Grant ( 20Pmy024-K19 ) provided by Kurita Water and Environment Foundation .
Publisher Copyright:
© 2021 The Author(s)
PY - 2021/8
Y1 - 2021/8
N2 - Study region: The Muda River Basin (MRB), Malaysia. Study Focus: This study proposed a framework to improve the European Space Agency Climate Change Initiative Land Cover (ESA CCI LC) products through the integration with the Annual Oil Palm Dataset (AOPD). The improved land use land cover (LULC) maps were then used to produce five LULC scenarios as input maps into the Soil and Water Assessment Tool (SWAT) model for analyzing the impact of LULC changes on water balance in the MRB. New hydrological insights for the region: The improved LULC maps have good performance in representing rubber and oil palm, with an overall accuracy up to 81 %. In addition, SWAT simulated monthly streamflow well for the MRB, with the highest R2 and NSE values of 0.84 and 0.86, respectively. During the 2001–2016 period, the MRB experienced an expansion of oil palm from 7.10%–17.36 %, a reduction of rubber from 34.93 % to 26.38 % and a slight decrease in forest from 54.23%–52.80 %. The urban expansion scenario showed significant increment in surface runoff, while the reforestation scenario helped to reduce surface runoff, while increase lateral flow and groundwater. Oil palm expansion led to a higher reduction in lateral flow and groundwater than rubber trees due to the higher soil water absorption rate. The proposed framework can be duplicated and applied in other tropical basins, particularly in Indonesia and Malaysia.
AB - Study region: The Muda River Basin (MRB), Malaysia. Study Focus: This study proposed a framework to improve the European Space Agency Climate Change Initiative Land Cover (ESA CCI LC) products through the integration with the Annual Oil Palm Dataset (AOPD). The improved land use land cover (LULC) maps were then used to produce five LULC scenarios as input maps into the Soil and Water Assessment Tool (SWAT) model for analyzing the impact of LULC changes on water balance in the MRB. New hydrological insights for the region: The improved LULC maps have good performance in representing rubber and oil palm, with an overall accuracy up to 81 %. In addition, SWAT simulated monthly streamflow well for the MRB, with the highest R2 and NSE values of 0.84 and 0.86, respectively. During the 2001–2016 period, the MRB experienced an expansion of oil palm from 7.10%–17.36 %, a reduction of rubber from 34.93 % to 26.38 % and a slight decrease in forest from 54.23%–52.80 %. The urban expansion scenario showed significant increment in surface runoff, while the reforestation scenario helped to reduce surface runoff, while increase lateral flow and groundwater. Oil palm expansion led to a higher reduction in lateral flow and groundwater than rubber trees due to the higher soil water absorption rate. The proposed framework can be duplicated and applied in other tropical basins, particularly in Indonesia and Malaysia.
KW - European Space Agency
KW - Land use
KW - Malaysia
KW - Oil palm
KW - SWAT
KW - Tropical
UR - http://www.scopus.com/inward/record.url?scp=85110473998&partnerID=8YFLogxK
U2 - 10.1016/j.ejrh.2021.100837
DO - 10.1016/j.ejrh.2021.100837
M3 - Journal article
AN - SCOPUS:85110473998
SN - 2214-5818
VL - 36
JO - Journal of Hydrology: Regional Studies
JF - Journal of Hydrology: Regional Studies
M1 - 100837
ER -
