000			02747nab|a22003497a|4500
001			64383
003			MX-TxCIM
005			20211015213938.0
008			191025s2021||||sz |||p|op||||00||0|eng|d
022			_a2071-1050
024	8		_ahttps://doi.org/10.3390/su13031223
040			_aMX-TxCIM
041			_aeng
100	0		_923979 _aLong Liang
245	1	0	_aFood security and climate stabilization : _bcan cereal production systems address both?
260			_aBasel (Switzerland) : _bMDPI, _c2021.
500			_aPeer review
500			_aOpen Access
520			_aThere is abundant evidence that greenhouse gas (GHG) emissions of cereal products, expressed per ton of grain output, have been trending downward over the past 20 years. This has largely been achieved through agricultural intensification that has concurrently increased area-based GHG emissions. The challenge is for agriculture to increase grain yields to meet the food demands of a growing world population while also contributing to climate stabilization goals by reducing net GHG emissions. This study assessed yield-based and area-based emissions and efficiencies for the winter wheat–summer maize (WWSM) rotation system over the period 1996 to 2016 using long-term, longitudinal, farm survey data and detailed soil emission data in Huantai county, Shandong Province, which is an archetype for cereal production across the North China Plain (NCP). In this region, yields have been increasing over time. However, nitrogen fertilizer inputs have decreased substantially with greater adoption of soil nutrient testing. In addition, there has been widespread adoption of residue incorporation into soils. As such, since 2002, the product carbon footprints of wheat and maize have reduced by 25% and 30%, respectively. Meanwhile, area-based carbon footprints for the rotation system have reduced by around 15% over the same period. These findings demonstrate the importance of detailed assessment of soil N2O emissions and rates of soil organic carbon sequestration. They also show the potential for net reductions in GHG emissions in cropping without loss of grain yields.
546			_aText in English
650		7	_913528 _aAgricultural soils _2AGROVOC
650		7	_98210 _aGreenhouse gas emissions _2AGROVOC
650		7	_98633 _aLife Cycle Analysis _2AGROVOC
650		7	_921456 _aCarbon footprint _2AGROVOC
650		7	_91957 _aIntensification _2AGROVOC
650		7	_91111 _aFertilizers _2AGROVOC
700	1		_aRidoutt, B.G. _923980
700	0		_aLiyuan Wang _923981
773	0		_gv. 13, no. 3, art. 1223 _dBasel (Switzerland) : MDPI, 2021. _x2071-1050 _tSustainability
856	4		_yClick here to access online _uhttps://doi.org/10.3390/su13031223
942			_cJA _n0 _2ddc
999			_c64383 _d64375