CH4 Emission Flux Model in Rice Growing Season in Cold Region Under Water Saving Irrigation Mode

Lihong Yu,Mengxue Wang

doi:10.46488/nept.2020.v19i02.004

Abstract

CH4 Emission Flux Model in Rice Growing Season in Cold Region Under Water Saving Irrigation Mode

Highlights

Methane (CH4) is one of the most important greenhouse gases (Sass et al 2000, Exnerová & Cienciala 2009, Liu et al 2017) and is the second leading cause of global warming (Zhao et al 2013)
The rice cultivation in Heilongjiang has gradually changed from traditional water storage for flood irrigation to control irrigation and intermittent irrigation modes
Zhu (2012) indicates that water-saving irrigation mode in the rice cultivation area in a cold region affects the seasonal emission flux and accumulative emission flux of CH4 produced by the rice field, which can effectively reduce the greenhouse effect of CH4

Summary

INTRODUCTION

Methane (CH4) is one of the most important greenhouse gases (Sass et al 2000, Exnerová & Cienciala 2009, Liu et al 2017) and is the second leading cause of global warming (Zhao et al 2013). The paddy planting area in Heilongjiang province is approximately 6000 hm, and it is the largest rice production area in China (Wang & Zhang 2015) It is an important emission source of CH4 in China. Zhu (2012) indicates that water-saving irrigation mode in the rice cultivation area in a cold region affects the seasonal emission flux and accumulative emission flux of CH4 produced by the rice field, which can effectively reduce the greenhouse effect of CH4. The previously researched estimation for rice CH4 emission may not sufficiently reflect the actual status under multiple water management modes in the cold region of Heilongjiang in northeast China. The established model can be used for estimation of rice CH4 emission for different water management modes in rice cultivation areas in cold regions in Heilongjiang and can provide the theoretical basis for establishing emission reduction measures for greenhouse gases

MATERIALS AND METHODS

RESULTS

DISCUSSION

Findings

CONCLUSIONS