关键词: 瑶山鳄蜥；水质分析；迁地保护；种群复壮

Abstract: The Chinese crocodile lizards（Shinisaurus crocodilurus）is a first?class protected animal in China. Due to the intense human activities，the species is currently at risk of extinction. I To halt the decline in its population，urgent rescue?based ex situ conservation measures are needed. t Ensuring appropriate environmental water quality is a critical component of ex situ conservation and plays a vital role in the survival of relocated individuals. In this study，water samples were collected from three sites：the native habitat in Linzhouding Nature Reserve in Maoming City（SC1），the Guangxi Daguishan crocodile lizards National Nature Reserve（SC3），and the captive breeding area of Guangzhou Zoo（SC2），which serves as an ex situ conservation site. The physicochemical properties and microbial communities of the water samples were systematically analyzed. The results showed that SC2 differed from SC1 and SC3 in pH and hardness，whereas other physicochemical parameters showed minor variation. The dominant microbial communities across the three water samples were Pseudomonadota and Bacteroidota. This study aims to clarify the similarities and differences between the water conditions of native habitat and ex situ conservation sites of the Chinese crocodile lizard，providing a scientific reference for ex situ conservation efforts in other regions.

Key words: Chinese crocodile lizard（Shinisaurus crocodilurus）；Water Quality Analysis；Ex?situ Conservation； Population Rehabilitation