天山西部云杉林年轮气候生长量与气候的关系

本文以天山西部２２个树轮年表为基础，进行年表对气候的响应函数分析，并选取１０个稳定可靠的响应函数进行概要分析，发现３、５、６月降水是制约伊犁天山雪岭云杉年轮气候生长量的主要因子．典型相关分析揭示了５～６月降水场与年轮场间的密切相关性．５～６月降水与年轮的典型年的对比分析表明；北天山南坡云杉年轮气候生长量受该时段降水的影响大于南天山北坡．平均而言，在伊犁地区，５～６月降水每偏少１０％，云杉年轮气候生长量偏少约６．２％；５～６月降水每偏多１０％，云杉年轮气候生长量约偏多２．４％．

The Relationships between Tree-Ring Climate Growth of Spruce Forest and Climate in the West Part of Tianshan Mountain

Using 22 tree-ring chronologies as a basis,doing response function analysis between tree-ring chronology and climate,selecting 10 stable and reliable response functions to do summary analysis,we find that the precipitation in March,May and June are the main factors which limit the tree-ring climatic growth of spruce in Yili area. Canonical correlation analysis point out a high correlation between the precipitation' field in May to June and the tree-ring field. The contrast analysis of typical yEars between the precipitation in May to Juneand tree-ring chronology show that the influence of the precipitation in the period on the tree-ring growth in'the south slope of north Tianshan mountain is greater than that in the north slope of south Tianshan mountain.On the averager,in Yili area,when the precipitation in May to June is 10% less than iiis mean,the treering'climatic growth of spruce is 6. 2% less than iiis mean. When the precipitation in May to June is 10%more than iiis mean,the tree-ring climatic growth is 2. 4% more than ii's mean.