%0 Journal Article
%T Spatial Difference of Agricultural Productivity in China at County Level<br>基于县域单元的中国农业生产率空间分异规律研究
%A YANG Yang
%A ZHANG Hongqi
%A <br>杨阳
%A 张红旗
%J 资源科学
%D 2009
%I 
%X With the support of Geographic Information System (GIS), we aim to present and analyze spatial difference of agricultural productivity in China at county level in this paper. First, we calculate agricultural land productivity, which is composed of two indicators, by using data of 2014 counties, including grain production, labor, agricultural added value and so on. By employing GIS, spatial attributes are applied to agricultural labor productivity, which indicates that every county possesses two unique indicators. Based on previously constructed database, we integrate two indicators into agricultural labor productivity, which are sorted into three categories by their value and simultaneously display and map the spatial distribution within the GIS system. Furthermore, these differences are analyzed with specific data on agricultural input, such as mechanical power and fertilizer. Similarly, we calculate agricultural land productivity at county level, divide them into three categories and obtain the spatial difference in China. The results indicate that the spatial difference of agriculture productivity in China is distinct. There are 229 counties with high agricultural labor productivity, which are mainly located in Sanjiang plain, the piedmont plain of Yanshan and Taihang Mountain, Jiaodong Peninsula, Hebei-Shandong-Henan lower plain, Dongtinghu plain, eastern part of Jianghuai plain, western part of Fujian province, and most part of Xinjiang. The high agricultural labor productivity is due to high agricultural mechanization, as well as high level of multiple-cropping index. There are 201 counties with low agricultural labor productivity, which are distributed in Losses plateau, Sichuan and Yunnan plateau, Qingling and Daba mountain area, Inner Magnolia and the area long the Great Wall, southern part of Guangdong, Western part of Yunnan, and southern part of Tibet. It can be indicated from the results that China should enhance agricultural investment in these areas to change the poor agricultural resource and low agricultural input. The number of counties with high agricultural land productivity is 197, most of which are located in Jiang-Han plain, Dongtinghu plain, Poyanghu plain, Su-Wan plain, and Yangtze River delta, where level of agricultural input is high and cropping structure decides the high productivity. By contrast, 277 counties with low agricultural land productivity are clustered in western part of Songnen plain, Sanjiang plain, eastern part of Inner Magnolia, Losses plateau, Qingling and Daba mountain area, Sichuan and Yunnan plateau. In these areas, low land productivity is accompanied by poor agricultural facilities and low agricultural input.
%K County
%K Agriculture productivity
%K GIS
%K Spatial difference<br>县域
%K 农业生产率
%K GIS
%K 空间差异
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=B5EDD921F3D863E289B22F36E70174A7007B5F5E43D63598017D41BB67247657&cid=B47B31F6349F979B&jid=9DEEAF23637E6E9539AD99BE6ABAB2B3&aid=A2C22A53E668AB1315982C056F002E24&yid=DE12191FBD62783C&vid=4AD960B5AD2D111A&iid=94C357A881DFC066&sid=970314C3B74F6C4D&eid=EE7D0B10C851F35D&journal_id=1007-7588&journal_name=资源科学&referenced_num=0&reference_num=16