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利用我国湿地松分布区内２２２个气象站点的１０ａ气候资料的平均值，用主成分分析法，将湿地松栽培区划分为４个立地气候区，即：Ⅰ．南亚热带、热带沿海立地气候区；Ⅱ．中亚热带丘陵立地气候区；Ⅲ．暖温带、北亚热带丘陵、平原、岗地立地气候区；Ⅳ．湘、鄂、川接壤山地，四川盆地，黔东南立地气候区．再在各气候区内实测有代表性的８～１０ａ的湿地松标准地１７１块，分别采用平均胸径、平均树高、平均单株材积证实各气候区内湿地松生长差异．这４个立地气候区可作为湿地松人工林立地类型划分、立地质量评价等经营数表编表单元的依据．
Based on the average of 10a climatic data of 222 meteorological stations in the distribution area of Pinus elliottii, the cultivated area of Pinus elliottii was divided into four climatic zones by principal component analysis, namely: Ⅰ. South subtropical, tropical coastal climate zone; Ⅱ. Central subtropical hilly site climate zone; Ⅲ. Warm temperate zone, northern subtropical hilly, plains, hillside climate zone; Ⅳ. Hunan, Hubei, Sichuan bordering the mountains, Sichuan Basin, Qiandongnan climatic climate zone. In the climatic zone, 171 representative patches of Pinus elliottii, 8 ~ 10a, were measured in each climatic zone. The average DBH, the average tree height and the average single plant volume were used to confirm the differences of the growth of Pinus elliottii in each climatic zone. These four site climatic zones can be used as the basis for the establishment of site types and site quality evaluation of the slash pine plantations.