1 Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China; 2 Key Laboratory of Oasis Ecology and Desert Environment, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China; 3 Agricultural College of Shihezi University, Shihezi 832003, China
Characteristics of the soil microbial population in forest land irrigated with saline water in the desert area
1 Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China; 2 Key Laboratory of Oasis Ecology and Desert Environment, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China; 3 Agricultural College of Shihezi University, Shihezi 832003, China
摘要 The study of soil microbial populations and diversity is an important way to understanding the soil energy process. In this study we analyzed the characteristics of soil microbial populations of the Tarim Desert Highway shelter-forest, by identifying microbial fatty acids and using methods of conventional cultivation. The results illustrated that the amount of soil microbial activity and the diversity of soil microbial fatty acid increased significantly with the plantation age of the shelter-forest; the soil microbial population was dominated by bacteria. The fatty acids of C14:0, C15:0, C16:0, C17:0, C18:1ω9, C18:0, C18:2ω6 and C21:0 were found to be dominant soil microbial fatty acids in the shelter-forest soil. Principal analysis and regression analysis showed that (1) concentrations of fatty acids of C14:0, C16:0 and C18:0 could be used as indicators of total soil microbial population; (2) soil bacteria and actinomycetes populations were closely correlated with the amount of fatty acids of C15:0 and C17:0; and (3) soil fungi were closely correlated with the amount of fatty acids of C18:1ω9 and C18:2ω6.
Abstract: The study of soil microbial populations and diversity is an important way to understanding the soil energy process. In this study we analyzed the characteristics of soil microbial populations of the Tarim Desert Highway shelter-forest, by identifying microbial fatty acids and using methods of conventional cultivation. The results illustrated that the amount of soil microbial activity and the diversity of soil microbial fatty acid increased significantly with the plantation age of the shelter-forest; the soil microbial population was dominated by bacteria. The fatty acids of C14:0, C15:0, C16:0, C17:0, C18:1ω9, C18:0, C18:2ω6 and C21:0 were found to be dominant soil microbial fatty acids in the shelter-forest soil. Principal analysis and regression analysis showed that (1) concentrations of fatty acids of C14:0, C16:0 and C18:0 could be used as indicators of total soil microbial population; (2) soil bacteria and actinomycetes populations were closely correlated with the amount of fatty acids of C15:0 and C17:0; and (3) soil fungi were closely correlated with the amount of fatty acids of C18:1ω9 and C18:2ω6.
基金资助: Western Doctoral Program of Chinese Academy of Sciences; Innovation Project of Chinese Academy of Science (KZCX2-XB2-13); National Natural Science Foundation of Xinjiang Uygur Autonomous Region (200821163); Natural Science Foundation of China (40701098)
通讯作者:
ZhengZhong JIN
E-mail: jinzz@sina.com
引用本文:
ZhengZhong JIN, JiaQiang LEI, XinWen XU, ShengYu LI, JingLong FAN, SiFeng ZHAO. Characteristics of the soil microbial population in forest land irrigated with saline water in the desert area[J]. 干旱区科学, 10.3724/SP.J.1227.2010.00107.
ZhengZhong JIN, JiaQiang LEI, XinWen XU, ShengYu LI, JingLong FAN, SiFeng ZHAO. Characteristics of the soil microbial population in forest land irrigated with saline water in the desert area. Journal of Arid Land, 2010, 2(2): 107-115.
