Effect of long-term fertilization on greenhouse gas emissions and carbon footprints in northwest China: A field scale investigation using wheat-maize-fallow rotation cycles

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F22%3APU146833" target="_blank" >RIV/00216305:26310/22:PU146833 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/62156489:43210/22:43920770

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0959652621042414?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0959652621042414?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jclepro.2021.130075" target="_blank" >10.1016/j.jclepro.2021.130075</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of long-term fertilization on greenhouse gas emissions and carbon footprints in northwest China: A field scale investigation using wheat-maize-fallow rotation cycles

Popis výsledku v původním jazyce

Improving agriculture intensity implies desirable crop productivity at a noteworthy environmental cost. A comprehensive comparative analysis of carbon footprint (CF) and greenhouse gases emissions (GHGs) of the two major and contrasting cropping systems is of paramount importance, which is rarely done. The life-cycle assessment (LCA) was performed to assess the alleviating potential, and differences in CF of wheat and maize crops within irrigated and rain-fed cropping systems. The two 25-year experiments included a winter wheatsummer maize cropping under irrigated conditions with five treatments: Control without fertilization (CK), combination of nitrogen and phosphorus (NP), NP plus potassium (NPK), NPK plus crop straw (S) (SNPK), and dairy manure (M) integrated with NPK (MNPK); and a winter wheat-summer fallow system under rain-fed conditions with four treatments as stated above except SNPK. Results showed that high N input increased total GHG emission and CF across cropping systems in question. The mean GHGs' emissions ranged from 2000.9 to 7586.7 kg ha(-1) for irrigated cropping system, and 192.5-1834.6 kg ha(-1) for rain-fed cropping system. Over the 25 years, without considering SOC gain, the mean CF values for irrigated and rainfed cropping systems ranged from 0.51 to 0.62 and 0.16-0.50 kg CO2 kg(-1) of grain, respectively. When SOC gains were involved in, the mean CF values for the two investigated cropping systems ranged from 0.22 to 0.42 and 0.26 to 0.29 kg CO2 kg(-1) of grain, respectively (in exclusion of SNPK). SOC sequestration played an important part in reduction of CF. Our research may provide valuable information to promote the optimization of agricultural practices and guide the design/choice of future farming systems in the region and where with similar environmental conditions.

Název v anglickém jazyce

Effect of long-term fertilization on greenhouse gas emissions and carbon footprints in northwest China: A field scale investigation using wheat-maize-fallow rotation cycles

Popis výsledku anglicky

Improving agriculture intensity implies desirable crop productivity at a noteworthy environmental cost. A comprehensive comparative analysis of carbon footprint (CF) and greenhouse gases emissions (GHGs) of the two major and contrasting cropping systems is of paramount importance, which is rarely done. The life-cycle assessment (LCA) was performed to assess the alleviating potential, and differences in CF of wheat and maize crops within irrigated and rain-fed cropping systems. The two 25-year experiments included a winter wheatsummer maize cropping under irrigated conditions with five treatments: Control without fertilization (CK), combination of nitrogen and phosphorus (NP), NP plus potassium (NPK), NPK plus crop straw (S) (SNPK), and dairy manure (M) integrated with NPK (MNPK); and a winter wheat-summer fallow system under rain-fed conditions with four treatments as stated above except SNPK. Results showed that high N input increased total GHG emission and CF across cropping systems in question. The mean GHGs' emissions ranged from 2000.9 to 7586.7 kg ha(-1) for irrigated cropping system, and 192.5-1834.6 kg ha(-1) for rain-fed cropping system. Over the 25 years, without considering SOC gain, the mean CF values for irrigated and rainfed cropping systems ranged from 0.51 to 0.62 and 0.16-0.50 kg CO2 kg(-1) of grain, respectively. When SOC gains were involved in, the mean CF values for the two investigated cropping systems ranged from 0.22 to 0.42 and 0.26 to 0.29 kg CO2 kg(-1) of grain, respectively (in exclusion of SNPK). SOC sequestration played an important part in reduction of CF. Our research may provide valuable information to promote the optimization of agricultural practices and guide the design/choice of future farming systems in the region and where with similar environmental conditions.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20701 - Environmental and geological engineering, geotechnics

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Cleaner Production

ISSN

0959-6526

e-ISSN

1879-1786

Svazek periodika

332

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

14

Strana od-do

1-11

Kód UT WoS článku

000777773200005

EID výsledku v databázi Scopus

2-s2.0-85121281026