人类活动已经严重影响雅鲁藏布江裂腹鱼类的生存，引起其资源量的急剧下降，在众多人类干扰因素中，气候变化对雅鲁藏布江裂腹鱼类资源的影响常常被人们所忽视。探索气候因子与生长的关系是研究和预测气候变化对鱼类资源影响的基础，然而，目前关于气候变化对雅鲁藏布江裂腹鱼类生长影响的研究仍为空白。本项目拟以异齿裂腹鱼和拉萨裂腹鱼为研究对象，综合运用交叉定年技术和混合效应模型定量地分析气温和降雨量对其生长的影响，阐明气温和降雨量对雅鲁藏布江流域裂腹鱼类生长的影响是否具有滞后性、时间和种间差异性。本研究有助于丰富我国高原鱼类生态学研究资料，为定量的研究和预测气候变化对高原鱼类资源的影响提供基础参考数据，对西藏鱼类资源的合理保护和利用具有重要的意义。

Anthropological activities have seriously threatened the survival of schizothoracinae fishes in the Yarlung Zangbo River, and caused their resources to dramatically decline. As one of anthropological interference factors, researchers often ignore the effects of climatic changes on schizothoracinae fish resources in the Yarlung Zangbo River. Exploring the relationship between climatic factors and fish growth underlies the research that investigate and predict the impact of climatic changes on fish resources. However, no information about the effects of climatic changes on the growth of schizothoracinae fishes in the Yarlung Zangbo River is reported now. In this project, the effects of the air temperature and precipitation on the growth of Schizothorax o’connori and Schizothorax waltoni are quantitatively analyzed using the cross-dating technique and mixed-effects model, and then, the lag, temporal variation and species-specific variation in the above effects are evaluated and elaborated. This project will enrich our knowledge on the ecology of plateau fish, and provide fundamental data for quantitatively studying and predicting the impact of climatic changes on the plateau fish resources, which is significant to reasonably protect and utilize fish resources in Tibet.