TY - JOUR
T1 - Global mapping of human-transformed dike-pond systems
AU - Xu, Yang
AU - Feng, Lian
AU - Fang, Hongwei
AU - Song, Xiao Peng
AU - Gieseke, Fabian
AU - Kariryaa, Ankit
AU - Oehmcke, Stefan
AU - Gibson, Luke
AU - Jiang, Xiating
AU - Lin, Ruimin
AU - Woolway, R. Iestyn
AU - Zheng, Chunmiao
AU - Brandt, Martin
AU - Fensholt, Rasmus
N1 - Publisher Copyright:
© 2024 Elsevier Inc.
PY - 2024
Y1 - 2024
N2 - Human-transformed agricultural and aquacultural ponds, collectively referred to as “dike-pond systems”, play a crucial role in ensuring food security but also contribute to the widespread loss of natural wetlands. However, spatially and temporally explicit patterns of dike-pond systems have not been thoroughly documented globally. Here, we map the distribution of dike-pond systems over both global inland and coastal regions during three periods (1984 to 2000, 2001 to 2010, 2011 to 2020) using 30-m resolution satellite observations. Results show that the total area of dike-pond systems was 132,886 km2 globally, with about 2/3 contributed from inland wetlands. From 1984 to 2020, the net gain of inland dike-pond systems (26,385 km2 or 92.7%) was 1.6 times that of coastal wetlands (16,371 km2 or 83.3%), due primarily to reduced coastal dike-pond systems in the last decade. We identified significant contributions of dike-pond systems to fishery production, and further revealed occurrences of dike-pond systems within protected areas. Our study highlights the importance of prioritizing the conservation and management of more intensively inland dike-pond systems, and our global synthesis provides a critical benchmark for assessing potential consequences of dike-pond system and for future restoration efforts.
AB - Human-transformed agricultural and aquacultural ponds, collectively referred to as “dike-pond systems”, play a crucial role in ensuring food security but also contribute to the widespread loss of natural wetlands. However, spatially and temporally explicit patterns of dike-pond systems have not been thoroughly documented globally. Here, we map the distribution of dike-pond systems over both global inland and coastal regions during three periods (1984 to 2000, 2001 to 2010, 2011 to 2020) using 30-m resolution satellite observations. Results show that the total area of dike-pond systems was 132,886 km2 globally, with about 2/3 contributed from inland wetlands. From 1984 to 2020, the net gain of inland dike-pond systems (26,385 km2 or 92.7%) was 1.6 times that of coastal wetlands (16,371 km2 or 83.3%), due primarily to reduced coastal dike-pond systems in the last decade. We identified significant contributions of dike-pond systems to fishery production, and further revealed occurrences of dike-pond systems within protected areas. Our study highlights the importance of prioritizing the conservation and management of more intensively inland dike-pond systems, and our global synthesis provides a critical benchmark for assessing potential consequences of dike-pond system and for future restoration efforts.
KW - Aquacultural ponds
KW - Dike-pond system
KW - Inland and coastal wetlands
KW - Paddy fields
KW - Protected areas
U2 - 10.1016/j.rse.2024.114354
DO - 10.1016/j.rse.2024.114354
M3 - Journal article
AN - SCOPUS:85201377655
VL - 313
JO - Remote Sensing of Environment
JF - Remote Sensing of Environment
SN - 0034-4257
M1 - 114354
ER -