[Effects of Cunninghamia lanceolata-broadleaved tree species mixed leaf litters on active soil organic matter].
With incubation test, this paper studied the effects of Cunninghamia lanceolata leaf litter and its mixture with the litters of main broadleaved tree species in subtropical China, such as Alnus cremastogyne, Kalopanax septemlobus and Michelia macclurei on active soil organic matter. The results showed that adding leaf litters into soil could significantly increase soil microbial biomass C and N, respiration rate and dissolved organic C, and mixed leaf litters were more effective than C. lanceolata leaf litter in increasing soil dissolved organic C. By the end of the incubation, the increment of soil microbial biomass C and N, respiration rate, and dissolved organic C in treatments C. lanceolata leaf litter and C. lanceolata-broadleaved tree species mixed leaf litters was 49% and 63%, 35% and 75%, 65% and 100%, and 66% and 108%, respectively, compared with control. The addition of leaf litters had no significant effects on soil microbial quotient and microbial biomass C/N ratio.
Wang
Qing-kui
QK
Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China. wqkui@126.com
Wang
Si-long
SL
Yu
Xiao-jun
XJ
Zhang
Jian
J
Liu
Yan-xin
YX
D029661:Alnus / Q000737:chemistry; D002244:Carbon / Q000032:analysis*; D032486:Cunninghamia / Q000737:chemistry*; D036882:Kalopanax / Q000737:chemistry; D009584:Nitrogen / Q000032:analysis; D010084:Oxidation-Reduction; D018515:Plant Leaves / Q000737:chemistry*; D012987:Soil / Q000032:analysis*; D012988:Soil Microbiology; D013045:Species Specificity; D014197:Trees / Q000737:chemistry*
D012987:Soil; D002244:Carbon; D009584:Nitrogen