首页|Afforestation effects on soil microbial abundance, microbial biomass carbon and enzyme activity in dunes of Horqin Sandy Land, northeastern China

Afforestation effects on soil microbial abundance, microbial biomass carbon and enzyme activity in dunes of Horqin Sandy Land, northeastern China

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In order to investigate the effects of afforestation on soil microbial abundance,microbial biomass carbon and enzyme activity in sandy dunes,20-year-old Pinus sylvestris var.mongolica Litv.(PSM) and Populus simonii Carfière (PSC) mature forests were selected in Horqin Sandy Land,and mobile dunes was set as a control (CK).Results show that PSM and PSC plantations can improve soil physicochemical properties and significantly increase microbiological activity in mobile dunes.Soil microbial abundance,microbial biomass carbon and enzyme activity show an order of PS＞PSM＞CK.Total soil microbial abundance in PSM and PSC was respectively 50.16 and 72.48 times more than that in CK,and the differences were significant among PSM,PSC and CK.Soil microbial biomass carbon in PSM and PSC was respectively 23.67 and 33.34 times more than that in CK,and the difference was insignificant between PSM and PSC.Soil enzyme activity,including dehydrogenase (DEH),peroxidase (PER),protease (PRO),urease (URE) and cellobiohydrolase (CEL) in PSM and PSC were respectively 19.00 and 27.54,4.78 and 9.89,4.05 and 8.67,29.93 and 37.46,and 9.66 and 13.42 times of that in CK.P.sylvestris and P.simonii can effectively improve soil physicochemical and microbiological properties in sandy dunes and fix mobile dunes in Horqin Sandy Land.The Cmic:C ratio is an applicable indicator to estimate soil stability and soil water availability,and based on an overall consideration of plantation stability and sustainability,P.sylvestris is better than P.simonii in fixing mobile dunes in sandy land.

mobile dunePinus sylvestris var.mongolica Litv.Populus simonii Carrièremicrobial abundancemicrobial biomass carbonsoil enzyme activityHorqin Sandy Land

ShaoKun Wang、XueYong Zhao、TongHui Zhang、YuQiang Li、Jie Lian、WenDa Huang、JianYing Yun

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Naiman Desertification Research Station, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China

University of Chinese Academy of Sciences, Beijing 100039, China

National Science and Technology Support ProgramYoung Scientists Foundation of Chinese Academy of Sciences (CAS)国家自然科学基金国家自然科学基金Cold and Arid Regions Environmental and Engineering Research Institute,CAS

2011BAC07B02Y2519510014117141431170413

2013

10.3724/SP.J.1226.2013.00184

寒旱区科学(英文版)
中国科学院寒区旱区环境与工程研究所,科学出版社有限责任公司

寒旱区科学(英文版)

CSCD
影响因子：0.237
ISSN：1674-3822
年,卷(期)：2013.5(2)
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