Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1038/s41558-018-0081-5 |
Increasing importance of precipitation variability on global livestock grazing lands | |
Sloat, Lindsey L.1; Gerber, James S.1; Samberg, Leah H.1; Smith, William K.1,2; Herrero, Mario3; Ferreira, Laerte G.4; Godde, Cecile M.3; West, Paul C.1 | |
2018-03-01 | |
发表期刊 | NATURE CLIMATE CHANGE |
ISSN | 1758-678X |
EISSN | 1758-6798 |
出版年 | 2018 |
卷号 | 8期号:3页码:214-+ |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Australia; Brazil |
英文摘要 | Pastures and rangelands underpin global meat and milk production and are a critical resource for millions of people dependent on livestock for food security(1,2). Forage growth, which is highly climate dependent(3,4), is potentially vulnerable to climate change, although precisely where and to what extent remains relatively unexplored. In this study, we assess climate-based threats to global pastures, with a specific focus on changes in within-and between-year precipitation variability (precipitation concentration index (PCI) and coefficient of variation of precipitation (CVP), respectively). Relating global satellite measures of vegetation greenness (such as the Normalized Difference Vegetation Index; NDVI) to key climatic factors reveals that CVP is a significant, yet often overlooked, constraint on vegetation productivity across global pastures. Using independent stocking data, we found that areas with high CVP support lower livestock densities than less-variable regions. Globally, pastures experience about a 25% greater year-to-year precipitation variation (CVP = 0.27) than the average global land surface area (0.21). Over the past century, CVP has generally increased across pasture areas, although both positive (49% of pasture area) and negative (31% of pasture area) trends exist. We identify regions in which livestock grazing is important for local food access and economies, and discuss the potential for pasture intensification in the context of long-term regional trends in precipitation variability. |
领域 | 资源环境 |
收录类别 | SCI-E ; SSCI |
WOS记录号 | WOS:000426308500017 |
WOS关键词 | INTERANNUAL VARIABILITY ; SPATIAL VARIABILITY ; VEGETATION INDEX ; CLIMATE-CHANGE ; TREND ANALYSIS ; DATA SETS ; RANGELANDS ; SYSTEMS ; AFRICA ; GIMMS |
WOS类目 | Environmental Sciences ; Environmental Studies ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
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/34172 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Minnesota, Inst Environm, St Paul, MN 55108 USA; 2.Univ Arizona, Sch Nat Resources & Environm, Tucson, AZ USA; 3.CSIRO, St Lucia, Qld, Australia; 4.Univ Fed Goias, Image Proc & GIS Lab Lapig, Campus Samambaia, Goiania, Go, Brazil |
推荐引用方式 GB/T 7714 | Sloat, Lindsey L.,Gerber, James S.,Samberg, Leah H.,et al. Increasing importance of precipitation variability on global livestock grazing lands[J]. NATURE CLIMATE CHANGE,2018,8(3):214-+. |
APA | Sloat, Lindsey L..,Gerber, James S..,Samberg, Leah H..,Smith, William K..,Herrero, Mario.,...&West, Paul C..(2018).Increasing importance of precipitation variability on global livestock grazing lands.NATURE CLIMATE CHANGE,8(3),214-+. |
MLA | Sloat, Lindsey L.,et al."Increasing importance of precipitation variability on global livestock grazing lands".NATURE CLIMATE CHANGE 8.3(2018):214-+. |
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