文献类型：期刊文献

英文题名：Effects of weeding and fertilization on soil biology and biochemical processes and tree growth in a mixed stand of Dalbergia odorifera and Santalum album

作者：Zhang, Peng[1] Li, Xiaofei[1] Xue, Shiyu[1] Cui, Zhiyi[1] Xu, Daping[1] Yang, Zengjiang[1]

通信作者：Cui, ZY[1]

机构：[1]Chinese Acad Forestry, Res Inst Trop Forestry, Guangzhou 510520, Guangdong, Peoples R China

年份：2021

卷号：32

期号：6

起止页码：2633-2644

外文期刊名：JOURNAL OF FORESTRY RESEARCH

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000607052800001)】；

基金：This study was supported by the National Key Research and Development Program (Grant No. 2016YFD0600205).

语种：英文

外文关键词：Plantation practices; Microbial biomass; Soil respiration; Mineralization; Leaching; Hemiparasite

摘要：In southern China, the eucalyptus plantation industry has been severely restricted by government policy over concerns on negative environmental impacts. In its place, large-scale plantations of high-value tropical tree species such as nitrogen-fixing Dalbergia odorifera and hemiparasite Santalum album have been widely cultivated including in mixed-species plantations. However, despite their poor growth, little information is available on suitable silvicultural practices of these plantations. Therefore, we subjected an 8-year-old mixed stand of D. odorifera and S. album to weeding, fertilization, weeding + fertilization, or no (CK) treatments and measured soil microbial biomass, respiration, nutrients, nitrogen mineralization and leaching and tree growth and litter production. Weeding and fertilization decreased microbial biomass but increased soil respiration, inhibited mineralization, had not effect on leaching of soil nitrogen, and improved the nutrient status of plantation soil. All practices improved the growth of D. odorifera. In the mixed plantation, fertilization increased litter production and nutrient content, but weeding and weeding + fertilization decreased growth of S. album and litter production in mixed plantation because weeding decreased the number of S. album haustoria in underground plant roots. In conclusion, fertilization is recommended; however, weeding-related practices are inappropriate for D. odorifera and S. album mixed plantations. These conclusions have important implications for managing other parasite or mixed-species plantations.