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

摘要： 瑶山鳄蜥（Shinisaurus crocodilurus）是我国一级重点保护动物，因人类活动的强烈干 扰，现面临着种群灭绝的风险。为了遏制鳄蜥种群数量的减少，亟需开展抢救性迁地保护。 环境水质的保证是迁地保护的重要环节，对迁地后鳄蜥的生存起着重要的作用。该文采集了 鳄蜥原生地茂名市林洲顶鳄蜥地方级自然保护区（SC1）、广西大桂山鳄蜥国家级自然保护区 （SC3）及鳄蜥迁地保护地广州动物园鳄蜥饲养区（SC2）的水样，系统开展水样理化性质和微生 物分析。结果显示，SC2与SC1及SC3理化性质中的pH值及硬度有差异，其余差异不大；三种 水样微生物优势菌门均为变形菌门（Pseudomonadota）和拟杆菌门（Bacteroidota）。该文明确了 鳄蜥原生地与迁地水样的共性与差异，为其他地区开展鳄蜥迁地保护提供科学借鉴。

关键词: 瑶山鳄蜥；水质分析；迁地保护；种群复壮