Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.14870 |
Intensification of dairy production can increase the GHG mitigation potential of the land use sector in East Africa | |
Brandt, Patric1,2; Yesuf, Gabriel3; Herold, Martin2; Rufino, Mariana C.1,3 | |
2019-11-19 | |
发表期刊 | GLOBAL CHANGE BIOLOGY
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ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2019 |
文章类型 | Article;Early Access |
语种 | 英语 |
国家 | Kenya; Netherlands; England |
英文摘要 | Sub-Saharan Africa (SSA) could face food shortages in the future because of its growing population. Agricultural expansion causes forest degradation in SSA through livestock grazing, reducing forest carbon (C) sinks and increasing greenhouse gas (GHG) emissions. Therefore, intensification should produce more food while reducing pressure on forests. This study assessed the potential for the dairy sector in Kenya to contribute to low-emissions development by exploring three feeding scenarios. The analyses used empirical spatially explicit data, and a simulation model to quantify milk production, agricultural emissions and forest C loss due to grazing. The scenarios explored improvements in forage quality (Fo), feed conservation (Fe) and concentrate supplementation (Co): FoCo fed high-quality Napier grass (Pennisetum purpureum), FeCo supplemented maize silage and FoFeCo a combination of Napier, silage and concentrates. Land shortages and forest C loss due to grazing were quantified with land requirements and feed availability around forests. All scenarios increased milk yields by 44%-51%, FoCo reduced GHG emission intensity from 2.4 +/- 0.1 to 1.6 +/- 0.1 kg CO(2)eq per kg milk, FeCo reduced it to 2.2 +/- 0.1, whereas FoFeCo increased it to 2.7 +/- 0.2 kg CO(2)eq per kg milk because of land use change emissions. Closing the yield gap of maize by increasing N fertilizer use reduced emission intensities by 17% due to reduced emissions from conversion of grazing land. FoCo was the only scenario that mitigated agricultural and forest emissions by reducing emission intensity by 33% and overall emissions by 2.5% showing that intensification of dairy in a low-income country can increase milk yields without increasing emissions. There are, however, risks of C leakage if agricultural and forest policies are not aligned leading to loss of forest to produce concentrates. This approach will aid the assessment of the climate-smartness of livestock production practices at the national level in East Africa. |
英文关键词 | forest disturbance greenhouse gas emissions livestock grazing LivSim smallholder farming sustainable intensification |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000497144400001 |
WOS关键词 | SUB-SAHARAN AFRICA ; SMALLHOLDER FARMING SYSTEMS ; CLIMATE-SMART AGRICULTURE ; SUSTAINABLE INTENSIFICATION ; MINERAL FERTILIZER ; CENTRAL HIGHLANDS ; CARBON FOOTPRINT ; TROPICAL FORESTS ; ENTERIC METHANE ; MAIZE YIELD |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/225281 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.Ctr Int Forestry Res CIFOR, Nairobi, Kenya; 2.Wageningen Univ & Res, Lab Geoinformat Sci & Remote Sensing, Wageningen, Netherlands; 3.Univ Lancaster, Lancaster Environm Ctr, Lancaster LA1 4YQ, England |
推荐引用方式 GB/T 7714 | Brandt, Patric,Yesuf, Gabriel,Herold, Martin,et al. Intensification of dairy production can increase the GHG mitigation potential of the land use sector in East Africa[J]. GLOBAL CHANGE BIOLOGY,2019. |
APA | Brandt, Patric,Yesuf, Gabriel,Herold, Martin,&Rufino, Mariana C..(2019).Intensification of dairy production can increase the GHG mitigation potential of the land use sector in East Africa.GLOBAL CHANGE BIOLOGY. |
MLA | Brandt, Patric,et al."Intensification of dairy production can increase the GHG mitigation potential of the land use sector in East Africa".GLOBAL CHANGE BIOLOGY (2019). |
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