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Carbon footprint and predicting the impact of climate change on carbon sequestration ecosystem services of organic rice farming and conventional rice farming: A case study in Phichit province, Thailand
Journal of Environmental Management ( IF 8.7 ) Pub Date : 2021-04-03 , DOI: 10.1016/j.jenvman.2021.112458
Noppol Arunrat , Sukanya Sereenonchai , Can Wang

Organic rice farming is a sustainable rice cultivation system that eliminates chemical inputs and has the potential to reduce environmental impacts. This study aims to: 1) evaluate and compare the carbon footprint intensity and the value of carbon sequestration ecosystem services (VCSES) between organic rice farming (OF) and conventional rice farming (CF) and 2) estimate the impact of climate change on soil organic carbon (SOC), rice yield, and VCSES of two farming types in Phichit province, Thailand. The results showed that the carbon footprint intensity in OF and CF were significantly different with −0.13 and 0.82 kg CO2eq kg−1 rice yield, respectively. The differences in SOC stocks (ΔSOCS) were more significant in OF with the increase of 1107.6 kg C ha−1 year−1 (4061.2 kg CO2eq ha−1 year−1), while the ΔSOCS value in CF was 625 kg C ha−1 year−1 (2291.7 kg CO2eq ha−1 year−1). The VCSES in OF (541,196 US$ ha−1 year−1) was nearly two times higher than in CF (305,388 US$ ha−1 year−1). Under future climate change, rice yields of both farming types are expected to increase under Representative Concentration Pathway (RCP) 2.6, RCP4.5, and RCP6.0, and it will decline under RCP8.5. The SOC and VCSES values are predicted to increase, except under RCP8.5. The dramatic declines can be found from the near future (2020–2039) to the very far future (2080–2099) period. Our finding indicates that even though climate change will have negative effects on SOC and VCSES, the OF will have less impact compared with CF.



中文翻译:

碳足迹和预测气候变化对有机水稻种植和常规水稻种植的固碳生态系统服务的影响:以泰国披集省为例

有机水稻种植是一种可持续的水稻种植系统,它消除了化学物质的投入,并具有减少环境影响的潜力。这项研究旨在:1)评估和比较有机水稻种植(OF)和常规水稻种植(CF)之间的碳足迹强度和固碳生态系统服务(VCSES)的价值,以及2)估算气候变化对土壤的影响泰国披集省两种农业类型的有机碳(SOC),水稻产量和VCSES。结果表明,OF和CF的碳足迹强度显着不同,分别为-0.13和0.82 kg CO 2 eq kg -1水稻产量。随着1107.6 kg C ha -1的增加,OF中的SOC储量(ΔSOCS)的差异更为显着。- 1年(4061.2 kg CO 2当量- 1-1),而CF中的ΔSOCS值为625千克C ha - 1-1(2291.7千克CO 2当量- 1-1)。在(541196 US $公顷VCSES -1-1)高于CF高出近两倍(305388 US $公顷-1-1)。在未来的气候变化下,两种农业类型的稻米产量在“代表浓度途径”(RCP)2.6,RCP4.5和RCP6.0下有望增加,在RCP8.5下会下降。SOC和VCSES值预计会增加,但RCP8.5除外。从不久的将来(2020-2039年)到遥远的将来(2080-2099年),可以发现戏剧性的下降。我们的发现表明,即使气候变化将对SOC和VCSES产生负面影响,但OF与CF相比影响较小。

更新日期:2021-04-04
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