<正>根据陇东黄土高原6县区40年气候资料，分析光、温、水等主要气象要素的变化，结果表明：陇东黄土高原气候变化趋势与全国和全球相似，气温升高、降水趋少，向暖干化方向发展。通过气候变化对主要林果影响的分析，该区域适宜苹果、杏、枣的栽培，而桃、梨将由适宜栽培向次适宜栽培演化。因此，宜大力发展苹果、杏、枣栽培，调整桃、梨栽培面积。冬季气温增高可能导致果树病虫害加重，应引起高度重视。

There were many ways on bounder effect to obtain data. However, it used to led to computing error owing to affect of bounder effect in calculating aggregation index by the result which concluded by monitoring sample plot. Thus, adjusting bounder effect method was chosen to analysis spatial pattern of different growth period of broad-leaved Korean pine forest according to aggregation index to take a reasonable management step and biological control tactics. The whole station apparatus was used to monitor relative coordinate data of temporary sample plot in four corners and relative coordinate data of each tree in field. Meantime, the new approach on aggregation index to correct bounder effect was put forward to analysis the spatial distribution pattern of broad-leaved Korean pine forest in its different growth period. The results showed that the pioneer trees shaped clumped distribution pattern when they were dominant. Otherwise, the companion trees shaped random distribution pattern. It was the results that acted as tree biological characteristic, tree adaptive tactics and disturbance factors for broad-leaved Korean pine forest pattern change from clumped distribution pattern to random distribution pattern in its different growth period respectively.