Orthopteran diversity in Yuanmou dry-hot valley of Yunnan.
Li Qiao, Chen YouQing, Chen Zhen, Guo Xiao, Liao Qiong, Zhao Jian, Li Kun
Author Affiliation: School of Conservation Biology, Southwest Forestry College, Kunming 650224, Yunnan, China.
Journal of Zhejiang Forestry College 23 : 316-322
Abstract : Orthopteran diversities of 10 ecosystems were investigated by sweep netting method in dry-hot valley of Yuanmou, Yunnan. 349 orthopteran samples including 25 species were collected. Among them, Acridoidea was the most abundant, with 19 species occupying 76.0% of the total species. Punica granatum plantation was richest in species, while Dodonaea angustifolia-Heteropogonetea contortus scrub and grass clump were poorest in species by species richness S and Margalef index. The maximum of Shannon-Wiener diversity index was found in the Punica granatum plantation, and the minimum was in the scrub and grass clump. The Orthopterans diversity was lower in Pinus yunnanensis plantation and the scrub and grass clump by Shannon-Wiener index, Simpson index, Pielou index and Atatalo index. With diversity ranking using Patil and Taillie's right-tail-sum method, the diversity of many sample communities couldn't be compared with each other. The diversity in the Punica granatum plantation was higher than others except the Mangifera indica plantation, and the diversity was lowest in Pinus yunnanensis forest and the scrub and grass clump. Azadirachta indica-Schleichera oleosa plantation and Punica granatum plantation had the greatest similarity coefficient showed by Jaccard indices, The smallest similarity coefficient was found in Pinus yunnanensis plantation and Pinus yunnanensis-Quercus forest. Dimocarpus longan plantation and Punica granatum plantation had the greatest, while Pinus yunnanensis-Quercus forest and the scrub and grass clump had the smallest similarity coefficient showed by Morista-Horn indices. Jaccard indices were more efficient than Morista-Horn indices in this study. The Orthopterans communities in the 10 sample plots were divided into 5 types using cluster analysis. The habitat of Pinus yunnanensis-Quercus forest was stable. Through more than 30 years' restoration, Pinus yunnanensis-Quercus forest was relative stable. Azadirachta indica-Dodonaea angustifolia plantation was becoming stable after 5 years' restoration. Others were not stable. The scrub and grass clump were degraded, and their vegetation needed to be restored.