气候变化领域集成服务门户(CCPortal): Integrated water management practice in tropical peatland agriculture has low carbon emissions and subsidence rates

CCPortal

DOI	10.1016/j.heliyon.2024.e26661
	Integrated water management practice in tropical peatland agriculture has low carbon emissions and subsidence rates
	Fawzi, Nurul Ihsan; Sumawinata, Basuki; Rahmasary, Annisa Noyara; Qurani, Ika Zahara; Naufaldary, Raihan Garin; Nabillah, Ratu; Palunggono, Heru Bagus; Mulyanto, Budi
发表日期	2024
EISSN	2405-8440
起始页码	10
结束页码	5
卷号	10 期号:5
英文摘要	Hydrological management in the use of peatland for agriculture is the backbone of its sustainability and a critical factor in climate change mitigation. This study evaluates the application of an integrated water management practice known as the Water Management Trinity (WMT), implemented since 1986 on a coconut plantation on the eastern coast of Sumatra, in relation to CO2 emissions and subsidence rates. The WMT integrates canals, dikes, and dams with water gates to regulate water levels for both coconut agronomy and the preservation of the peat soil. The WMT has successfully regulated and maintained an average yearly water table depth of -45 to -51 cm below the surface. The methodology involved a closed chamber method for measuring soil CO2 flux using a portable Infrared Gas Analyzer, conducted weekly over a six-month period to cover dry and rainy season at bi-modal climate condition. Subsidence measurements have been ongoing from 1986 to 2022. The results show bare peat soil has heterotrophic respiration CO2 emissions of 7.77 t C-CO2 ha- 1 yr- 1, while in coconut plantations 7.99 t C-CO2 ha- 1 yr- 1, similar to emissions in mineral soils. Autotrophic respiration leads to the overestimation of CO2 emissions on peatland and accounts for 212-424% of the total emissions. The cumulative subsidence from 1986 to 2022 is -56.3 cm, with a soil rise of +0.8 cm in 2022, indicating a flattening rate of subsidence. This is characterized by an increase in bulk density at the surface from 0.072 to 0.144 gr/cm3, with approximately 81% of the subsidence being due to compaction. The statistical analysis found no relationship between water table depth and CO2 emissions, indicating that water table depth cannot be used as a predictor for CO2 emissions. In summary, peatland agriculture has a promising future when managed sustainably using an integrated hydrological management system.
英文关键词	Sustainable peatland management; Water management trinity; CO 2 emission; Subsidence rates; Coconut agriculture
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:001205853000001
来源期刊	HELIYON
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/304333
作者单位	Bogor Agricultural University; Ministry of Agricultire & Rural Development; Bogor Agricultural University
推荐引用方式 GB/T 7714	Fawzi, Nurul Ihsan,Sumawinata, Basuki,Rahmasary, Annisa Noyara,et al. Integrated water management practice in tropical peatland agriculture has low carbon emissions and subsidence rates[J],2024,10(5).
APA	Fawzi, Nurul Ihsan.,Sumawinata, Basuki.,Rahmasary, Annisa Noyara.,Qurani, Ika Zahara.,Naufaldary, Raihan Garin.,...&Mulyanto, Budi.(2024).Integrated water management practice in tropical peatland agriculture has low carbon emissions and subsidence rates.HELIYON,10(5).
MLA	Fawzi, Nurul Ihsan,et al."Integrated water management practice in tropical peatland agriculture has low carbon emissions and subsidence rates".HELIYON 10.5(2024).