In the past 25 years, the population density of common amphibians in 29 provinces of China showed a decreasing trend, which was 51.68% (77/149).
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Can artificial ecological islands alter the biodiversity of macroinvertebrate? A case study in Fujin National Wetland Park, the Sanjiang Plain, China.
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Regarding the increasing trend in the macroinvertebrate diversity, consistent with the works of Du and Lu, the diversity index showed an increasing trend with the extension of time since the construction of conservation engineering projects (Du et al., 2011 ; Lu et al., 2013 ).