河北省气候生产潜力的估算与区划

Evaluation and Classification of Climate Productive Potential in Hebei Province

利用河北省99个气象站点1965-2005年逐年年平均气温、年降水量资料,应用Miami模型、Thornthwaite Memo-riai模型估算了河北省温度气候生产潜力(TSPt)、降水气候生产潜力(TSPN)和蒸散量气候生产潜力(TSPV)。结果表明:河北省各地热量条件较好,水分是限制作物产量的主要因素;平原中南部地区为TSPt的高值区,燕山南麓为TSPN的高值区,TSPV的高值区分布较复杂,主要集中在燕山南麓,TSPN、TSPN、TSPV的低值区均位于坝上高原;根据TSPV值,采用经验正交函数分解(EOF)和旋转经验正交函数分解(REOF)方法进行气候区划,将河北省划分为5个区域,分别为冀西北高原、冀北山地、燕山南麓、冀中平原和冀南平原,各区特点明显,可为当地的农业生产布局提供参考。

Based on the data of annual average temperature and annual precipitation of 99 meteorological stations from 1965 to 2005 in Hebei Province, the temperature climate productive potential （ TSPt） , the precipitation climate productive potential （ TSPN ） and the evapotranspiration climate productive potential （TSPV ） in Hebei Province were evaluated by Miami Model and Thomthwaite Memorial Model. Taken TSPV as a main factor, the climate productive potential was classified by Experiential Ortho Function （EOF） and Rotary Experiential Ortho Function （REOF）. The results indicated that water was the main limited factor for crop yields in Hebei Province, while the thermo conditions were relative good. The middle and south areas of Hebei Plain and the south parts of Yanshan mountains was with higher TSPt and TSPN respectively, while the distribution of the TSPV was complicated, but mainly located in the south parts of Yanshan mountains. The Bashang altiplano was with lower TSPt , TSPN and TSPV. According to Tspv, Hebei Province was divided into five regions, e.g. north-west altiplano area, north mountain area, south parts of Yanshan mountains, middle plain area and south plain area.