DOI: 10.1002/2014GB004999
Scopus记录号: 2-s2.0-84947127521
论文题名: Spatial and temporal contrasts in the distribution of crops and pastures across Amazonia: A new agricultural land use data set from census data since 1950
作者: Imbach P ; , Manrow M ; , Barona E ; , Barretto A ; , Hyman G ; , Ciais P
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2015
卷: 29, 期: 6 起始页码: 898
结束页码: 916
语种: 英语
英文关键词: agricultural census
; annual and perennial agriculture
; C3 crops
; C4 crops
; deforestation
; land use change
Scopus关键词: agricultural land
; crop plant
; data set
; deforestation
; land use change
; pasture
; spatiotemporal analysis
; Amazonia
; Brazil
英文摘要: Amazonia holds the largest continuous area of tropical forests with intense land use change dynamics inducing water, carbon, and energy feedbacks with regional and global impacts. Much of our knowledge of land use change in Amazonia comes from studies of the Brazilian Amazon, which accounts for two thirds of the region. Amazonia outside of Brazil has received less attention because of the difficulty of acquiring consistent data across countries. We present here an agricultural statistics database of the entire Amazonia region, with a harmonized description of crops and pastures in geospatial format, based on administrative boundary data at the municipality level. The spatial coverage includes countries within Amazonia and spans censuses and surveys from 1950 to 2012. Harmonized crop and pasture types are explored by grouping annual and perennial cropping systems, C3 and C4 photosynthetic pathways, planted and natural pastures, and main crops. Our analysis examined the spatial pattern of ratios between classes of the groups and their correlation with the agricultural extent of crops and pastures within administrative units of the Amazon, by country, and census/survey dates. Significant correlations were found between all ratios and the fraction of agricultural lands of each administrative unit, with the exception of planted to natural pastures ratio and pasture lands extent. Brazil and Peru in most cases have significant correlations for all ratios analyzed even for specific census and survey dates. Results suggested improvements, and potential applications of the database for carbon, water, climate, and land use change studies are discussed. The database presented here provides an Amazon-wide improved data set on agricultural dynamics with expanded temporal and spatial coverage. © 2015. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/78019
Appears in Collections: 气候变化事实与影响
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作者单位: Tropical Agricultural Research and Higher Education Center (CATIE), Turrialba, Costa Rica; GIS-Analyst, Miami, FL, United States; Brazilian Bioethanol Science and Technology Laboratory (CTBE), Campinas, Brazil; Decision and Policy Analysis Group, International Center for Tropical Agriculture, Cali, Colombia; IPSL-LSCE, CEA CNRS UVSQ, Centre d'Etudes Orme des Merisiers, Gif sur Yvette, France
Recommended Citation:
Imbach P,, Manrow M,, Barona E,et al. Spatial and temporal contrasts in the distribution of crops and pastures across Amazonia: A new agricultural land use data set from census data since 1950[J]. Global Biogeochemical Cycles,2015-01-01,29(6)