Effects of litter removal on plant species diversity: a case study in tropical Eucalyptus forest ecosystems in South Chi
The removal of litterfall in the Eucalyptus plantations in south China affected the plant biodiversity in these ecosystems was found based on the field observation and lab analysis. The protection times of species diversity of three Eucalyptus communities were different (Community I with no protection, Community II with 7-year-protection, Community III with 35-year-protection). The total numbers of species in these communities (from Community I to II to III) are 1, 6, and 17, respectively. The results showed that the protection of litterfall from being taken out of the ecosystem is important and can increase plant species diversity. This study combined biomass data, the chemical and physical properties of the soil, and the diversity of microbes in the communities. It is concluded that the mechanism of the effects of litter removal on biodiversity includes three factors: removing the suitable habitat of microbe and animal, decreasing the soil nutrient, and changing the special habitat for the germination and growth of invading plants. These results should have important implications for managing these Eucalyptus forest ecosystems in South China.
作 者： PENG Shao-Lin REN Hai WU Jian-Guo LU Hong-fang 作者单位： PENG Shao-Lin,REN Hai,LU Hong-fang(South China Institute of Botany, The Chinese Academy of Sciences, Guangzhou 510650, China)WU Jian-Guo(Arizona State University West, Phoenix, AZ 85069, USA)
刊 名： 环境科学学报(英文版) ISTIC SCI 英文刊名： JOURNAL OF ENVIRONMENTAL SCIENCES 年，卷(期)： 2003 15(3) 分类号： X171.1 X173 关键词： litter removal biodiversity Eucalyptus plantation South China