气候变化领域集成服务门户(CCPortal): How much can sustainable intensification increase yields across South Asia? a systematic review of the evidence

CCPortal

DOI	10.1088/1748-9326/ab8b10
	How much can sustainable intensification increase yields across South Asia? a systematic review of the evidence
	Jain M.; Solomon D.; Capnerhurst H.; Arnold A.; Elliott A.; Kinzer A.T.; Knauss C.; Peters M.; Rolf B.; Weil A.; Weinstein C.
发表日期	2020
ISSN	17489318
卷号	15 期号:8
英文摘要	Food security will become increasingly challenged over the coming decades, and sustainable intensification is often touted as an ideal way to increase yields while limiting negative environmental impacts. Yet, the extent to which sustainable intensification can increase yields remains unclear. We systematically reviewed the literature to assess the extent to which sustainable intensification can increase yields across South Asia, a region that is expected to face some of the greatest food security challenges over the coming decades. We found that yield gains from sustainable intensification interventions were heterogeneous, and that the average yield gain across all studi es was 21%. Residue retention and the use of organic fertilizers were, in particular, associated with significant and positive yield gains, though the use of organic fertilizers was not always profitable, likely due to large subsidies provided for mineral fertilizers across South Asia. Our work also revealed biases in the current sustainable intensification literature, with research clustered in highly productive, irrigated, and commodity cropping systems, which do not represent large portions of agricultural systems across South Asia. Our results highlight that sustainable intensification interventions should play an important role in increasing food production across South Asia, but yield gains from these interventions are modest compared to estimated yield gaps across the region. © 2020 The Author(s). Published by IOP Publishing Ltd.
英文关键词	grain crops; South Asia; sustainable intensification; systematic review; yield gaps
语种	英语
scopus关键词	Agricultural robots; Environmental impact; Food supply; Agricultural system; Average yield; Cropping systems; Food production; Food security; Mineral fertilizers; Organic fertilizers; Systematic Review; Fertilizers; agricultural intensification; alternative agriculture; commodity; environmental impact; fertilizer; food security; sustainability; yield response; South Asia
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/153884
作者单位	School for Environment and Sustainability, University of Michigan, Ann Arbor, MI, United States; School for Environment and Sustainability, University of Michigan, Ann Arbor, MI 48109, United States; College of Engineering, University of Michigan, Ann Arbor, MI, United States
推荐引用方式 GB/T 7714	Jain M.,Solomon D.,Capnerhurst H.,et al. How much can sustainable intensification increase yields across South Asia? a systematic review of the evidence[J],2020,15(8).
APA	Jain M..,Solomon D..,Capnerhurst H..,Arnold A..,Elliott A..,...&Weinstein C..(2020).How much can sustainable intensification increase yields across South Asia? a systematic review of the evidence.Environmental Research Letters,15(8).
MLA	Jain M.,et al."How much can sustainable intensification increase yields across South Asia? a systematic review of the evidence".Environmental Research Letters 15.8(2020).