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A Decade of Complete Change in a Muslim Community
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作者 CAI YI 《The Journal of Human Rights》 2007年第5期13-15,共3页
Talking about changes in the Muslim-inhabited Niu Jie Street of Beijing, every member of the community would be all smiles. "Everything has changed; the mosque, the streetscape and the people, too," they would say.
关键词 A Decade of complete Change in a Muslim Community
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Determinants of species assemblages of insect pests in alpine forest ecosystems of western China
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作者 Chun-Jing Wang Rong Wang +5 位作者 Chun-Mei Yu Yongcuo Pubu Wan-Gui Sun Xiao-Feng Dang Qiang-Feng Li Ji-Zhong Wan 《Forest Ecosystems》 SCIE CSCD 2021年第4期948-960,共13页
Background:Insect pests are a significant threat to natural resources and social development.Modeling species assemblages of insect pests can predict spatiotemporal pest dynamics.However,research gaps remain regarding... Background:Insect pests are a significant threat to natural resources and social development.Modeling species assemblages of insect pests can predict spatiotemporal pest dynamics.However,research gaps remain regarding the mechanism for determining species assemblages of insect pests in alpine forest ecosystems.Here,we explored these determinants using a field investigation conducted for insect pests in a region of the Qinghai-Tibet Plateau.We assessed the species assemblages of insect pests in alpine forest ecosystems based on species co-occurrence patterns and species diversity(i.e.,observed diversity,dark diversity,community completeness,and species pool).A probabilistic model was used to test for statistically significant pairwise patterns of species co-occurrence using the presence-absence matrix of pest species based on species interactions.We used ordinary least squares regression modeling to explore relationships between abiotic factors(i.e.,climate factors and human influence)and species diversity.Results:Positive pest species interactions and many association links can occur widely across different investigation sites and parts of plant hosts in alpine forest ecosystems.We detected high dark diversity and low community completeness of insect pests in alpine forest ecosystems.High temperature and precipitation could promote pest species diversity,particularly dark diversity and species pools.Human influence could drive high levels of pest species diversity and lead to dark diversity and species pools.Community completeness could be an effective indicator for insect pest risk assessment.Conclusions:Our study provides new evidence for the determinants of insect pest species assemblages in alpine forest ecosystems from the perspectives of pest species interactions and abiotic factors.The findings of our study could reveal the mechanism for shaping species assemblages and support the prevention and control of insect pests in alpine forest ecosystems. 展开更多
关键词 Alpine forest ecosystems Community completeness Dark diversity Insect pest Species co-occurrence Species diversity
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