Farming the planet: 2. Geographic distribution of crop areas, yields, physiological types, and net primary production in the year 2000
Farming the planet: 2. Geographic distribution of crop areas, yields, physiological types, and net primary production in the year 2000
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DOI：
10.1029/2007gb002947
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发表时间：
2008-03-01
影响因子：
5.2
通讯作者：
Foley, Jonathan A.
中科院分区：
文献类型：
--
作者：
Monfreda, Chad;Ramankutty, Navin;Foley, Jonathan A.
[1]农田覆盖了大约1500万公里（2）的地球，并提供了人类福祉所必需的大部分食物和纤维。大多数来自卫星的全球土地覆盖数据集将农田分为几类，从而排除了对回答从生物多样性保护到粮食安全到地球化学循环等关键问题至关重要的信息。关于农业土地使用实践的信息，如作物选择，产量和肥料使用更是有限。在这里，我们提出了土地利用数据集，结合国家，州，县一级的人口普查统计数据与最近更新的全球农田数据集5分钟5分钟（类似于10公里10公里）的经纬度网格。由此产生的土地使用数据集描绘了大约2000年世界175种不同作物的面积（收获）和产量。我们汇总这些单独的作物地图，以产生新的地图，11个主要作物群体，作物净初级生产力，和四个生理基础的作物类型：一年生/多年生植物，草本/灌木/乔木，C-3/C-4，豆科/非豆科。
[1] Croplands cover similar to 15 million km(2) of the planet and provide the bulk of the food and fiber essential to human well-being. Most global land cover data sets from satellites group croplands into just a few categories, thereby excluding information that is critical for answering key questions ranging from biodiversity conservation to food security to biogeochemical cycling. Information about agricultural land use practices like crop selection, yield, and fertilizer use is even more limited. Here we present land use data sets created by combining national, state, and county level census statistics with a recently updated global data set of croplands on a 5 min by 5 min (similar to 10 km by 10 km) latitude-longitude grid. The resulting land use data sets depict circa the year 2000 the area (harvested) and yield of 175 distinct crops of the world. We aggregate these individual crop maps to produce novel maps of 11 major crop groups, crop net primary production, and four physiologically based crop types: annuals/perennials, herbaceous/shrubs/trees, C-3/C-4, and leguminous/nonleguminous.