%0 Journal Article
%T Regionalization of the Natural Suitability for Rural Household Biogas in China<br>中国农村户用沼气自然适宜性区划
%A BI Yuyun
%A GAO Chunyu
%A WANG Yajing
%A LI Gang
%A LI Jianzheng
%A <br>毕于运
%A 高春雨
%A 王亚静
%A 李 刚
%A 李建政
%J 资源科学
%D 2009
%I 
%X Rural household biogas uses human and livestock manure as raw materials and its main products include biogas and biogas fertilizer. Suitable air and soil temperature is the necessary condition for household biogas digesters to generate gas safely and run normally. The low temperature and the frozen soil in winter or cold seasons are the main natural factors influencing the development of rural household biogas. According to the natural suitability, the development of household biogas can be divided into three different regions in rural China on the basis of regional principles, such as security, efficiency, conjugacy and integrity of the administrative regions, as well as regional indicator, such as frozen soil and temperature,. The naturally suitable regions are located in south China; conditionally suitable regions are in north China and west Sichuan - east Tibet Plateau; while the unsuitable regions in China are the cold area. Meanwhile, each region has some different sub-regions. It is not necessary to provide heat-retaining condition in naturally suitable regions, considering the heat preservation of household biogas digesters in winter. However, in conditionally suitable regions, to satisfy the heat-retaining condition is very important. In unsuitable regions, due to the low temperature, it is unsuitable to develop household biogas even if fully-closed heating barn is put up. Moreover, naturally suitable region in south China is further divided into three different sub-regions, which are the best level of naturally suitable sub-region in south China (including Southeastern Tibet), the medium level of naturally suitable sub-region in South of Changjiang River (including Sichuan Plateau) and the third level of naturally suitable sub-region in Han and Huaihe River valley. The conditionally suitable region is divided into five different sub-regions, including simply thermal suitable region in the area from north China plain to Loess Plateau and others, and Western Sichuan - Eastern Tibet Plateau is divided into two sub-regions including the high latitude cold area in northwestern part of northeast China and Tibetan Plateau high elevation cold area. Every region and its sub-regions are analyzed in different aspects, including the basic situation, natural suitability of household biogas development, basic requirements of building and heat preservation in winter of household biogas digesters. This study can provide scientific basis and decision guidance for the development of household biogas in the rural areas of China.
%K China
%K Rural household biogas
%K Regional planning
%K Natural suitability<br>中国
%K 农村户用沼气
%K 自然适宜性
%K 区划
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=B5EDD921F3D863E289B22F36E70174A7007B5F5E43D63598017D41BB67247657&cid=B47B31F6349F979B&jid=9DEEAF23637E6E9539AD99BE6ABAB2B3&aid=602C934ECD209736FABDE13F728545D7&yid=DE12191FBD62783C&vid=4AD960B5AD2D111A&iid=5D311CA918CA9A03&sid=F82BA45C3E48287D&eid=0B2455B0C3E7C267&journal_id=1007-7588&journal_name=资源科学&referenced_num=2&reference_num=5