Effects of biochar application on soil enzyme activities in Eucalyptus plantations in North Guangxi
Zhiyi MOU,
Chunyan DUAN,
Yanyu LI,
Denan ZHANG,
Yingjie SUN,
Qiumei TENG,
Yunshuang CHEN,
Yang CAO,
Zihui WANG,
Guangping XU
Affiliations
Zhiyi MOU
Guangxi Key Laboratory of Landscape Resources Conservation and Sustainable Utilization in Lijiang River Basin, Guangxi Normal University, Guilin 541006, Guangxi, China
Chunyan DUAN
Oasis Environmental Protection Technology Limited Company of Shanxi Zhongxin, Taiyuan 030000, China
Yanyu LI
Huangmian Forestry Centre of Guangxi Zhuang Autonomous Region, Luzhai 545600, Guangxi, China
Denan ZHANG
Guangxi Key Laboratory of Plant Conservation and Restoration Ecology in Karst Terrain, Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guilin 541006, Guangxi, China
Yingjie SUN
Guangxi Key Laboratory of Plant Conservation and Restoration Ecology in Karst Terrain, Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guilin 541006, Guangxi, China
Qiumei TENG
Guangxi Key Laboratory of Plant Conservation and Restoration Ecology in Karst Terrain, Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guilin 541006, Guangxi, China
Yunshuang CHEN
Guangxi Key Laboratory of Landscape Resources Conservation and Sustainable Utilization in Lijiang River Basin, Guangxi Normal University, Guilin 541006, Guangxi, China
Yang CAO
Guangxi Key Laboratory of Landscape Resources Conservation and Sustainable Utilization in Lijiang River Basin, Guangxi Normal University, Guilin 541006, Guangxi, China
Zihui WANG
College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541006, Guangxi, China
Guangping XU
Guangxi Key Laboratory of Plant Conservation and Restoration Ecology in Karst Terrain, Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guilin 541006, Guangxi, China
To investigate the effects of different biochar applications on soil enzyme activities in Eucalyptus plantations in North Guangxi, and provide theoretical references for the rational application of biochar to Eucalyptus plantations. Based on field experiments, biochar was prepared anaerobically at 500℃ from branches of Eucalyptus plantation harvesting residues, and with six treatment groups, such as 0 (CK), 0.5% (T1), 1% (T2), 2% (T3), 4% (T4), and 6% (T5), to analyze the changes in soil enzyme activities under different application rates after one year importation. The results were as follows: (1) The soil enzyme content decreased gradually as the soil layer deepened. (2) In the same soil layer, the contents of urease, catalase, β-glucosidase and dehydrogenase increased with the increase of biochar application, and the highest contents were found at 6% of biochar application. (3) With the increase of biochar application, the contents of acid phosphatase, sucrase, leucine aminopeptidase and cellobioglucosidase showed a trend of first increasing and then decreasing. Acid phosphatase and leucine aminopeptidase had the highest contents at 2% of biochar application. Sucrase and cellobioglucosidase had the highest contents at 4% of biochar application. In general, the biochar application increased the soil enzyme activities of Eucalyptus plantations. The results of this study can provide a scientific basis for the application of forestry waste biochar in Eucalyptus plantations.
