The results showed that the same trend (BS > MS > US) was found for SMBC, SMBN, qMBC, qMBN, CAT and INV of upper soil layer, while a different trend (BS > US > MS) was observed for ALK. In this study, we chose the Dip forest land at Yunfo village Chengdong town Liangping country Chongqing Province as the study object, to analyze the influence of three different slope positions and two different sections-upper layer(0-15 cm) and bottom layer(15-30 cm) on the soil microbial biomass carbon ( SMBC), soil microbial biomass nitrogen (SMBN), microbial carbon entropy (qMBC), microbial nitrogen entropy (qMBN), catalase(CAT), alkaline phosphatase (ALK), urease(URE), and invertase(INV). The goal of this study was to determine the influence of different slope position and section in Disporopsis pernyi forest land on the soil microbial biomass and enzyme activity in southwest Karst Mountain. Soil microbial biomass and enzyme activity are important parameters to evaluate the quality of the soil environment. Qin, Hua-Jun He, Bing-Hui Zhao, Xuan-chi Li, Yuan Mao, Wen-tao Zeng, Qing-ping Soil biological activities were improved with long-term reclaimed water irrigation in Beijing. Significantly difference was found between 0-10 cm and 10-20 cm soil layer in green land. Investigation of SMBC and enzyme activities decreased with increasing of soil depth. Compared with their respective controls, the activities of enzymes in 0-20 cm soil layer of green land and farmland were enhanced by an average of 36.7% and 7.4%, respectively. The SMBC increased by 60.1% and 14.2% than those control treatments in 0-20 cm soil layer of green land and farmland, respectively. SMBC and enzyme activities from green land soils irrigated with reclaimed water were higher than that of control treatments using drinking water, but the difference is not significant in farmland.
Soil microbial biomass carbon ( SMBC), five types of soil enzyme activities (urease, alkaline phosphatase, invertase, dehydrogenase and catalase) and physicochemical indicators in soils were measured subsequently. We collected surface soil samples from urban green spaces and suburban farmlands of Beijing. Its effects on soil biological activities have received great attentions. The physicochemical properties of soils might be changed under the long-term reclaimed water irrigation. Pan, Neng Hou, Zhen-An Chen, Wei-Ping Jiao, Wen-Tao Peng, Chi Liu, Wen