%0 Journal Article
%T SEPARATING ROOT AND SOIL MICROBIAL CONTRIBUTIONS TO TOTAL SOIL RESPIRATION IN A GRAZED GRASSLAND IN THE XILIN RIVER BASIN<br>锡林河流域一个放牧草原群落中根系呼吸占土壤总呼吸比例的初步估计
%A LI Ling_Hao
%A HAN Xing_Guo
%A WANG Qi_Bing
%A CHEN Quan_Sheng
%A ZHANG Yan
%A YANG Jing
%A BAI Wen_Ming
%A SONG Shi_Huan
%A XING Xue_Rong
%A ZHANG Shu_Min
%A <br>李凌浩
%A 韩兴国
%A 王其兵
%A 陈全胜
%A 张焱
%A 杨晶
%A 白文明
%A 宋世环
%A 邢雪荣
%A 张淑敏
%J 植物生态学报
%D 2002
%I Editorial Office of Chinese Journal of Plant Ecology
%X The contribution of root respiration to total soil respiration was examined in a grazed steppe grassland in Inner Mongolia. From respiration data based on CO 2 uptake by NaOH and corresponding root biomass values for each of 10 plots, a linear regression of CO 2 rates on root dry weights was calculated for every ten days. By extrapolating the regressive line to zero root biomass, the proportion of the total soil respiration flux that is attributable to live root respiration was estimated to be 24% on average, ranging from 15% to 37% in the growing season. The larger proportional values appeared in the same period of the season as that of the peak values of root growth, both of which occurred in mid_June and early_August respectively.
%K Root respiration
%K Total soil respiration
%K Grazed steppe grassland<br>根系呼吸
%K 土壤总呼吸
%K 放牧草地
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=2F2173CCFF292BF447DC2681EA33BBAE&aid=B53E3722B3080ED9&yid=C3ACC247184A22C1&vid=96C778EE049EE47D&iid=CA4FD0336C81A37A&sid=771469D9D58C34FF&eid=9971A5E270697F23&journal_id=1005-264X&journal_name=植物生态学报&referenced_num=40&reference_num=14