Abstract: The Spatial and temporal patterns analysis of land use functions can provide a reference for determination of the land use direction and promotion of the multi-functional overall effect.Based on the Production-Living-Ecological functions theory, land use functions classification was carried out and evaluation index system was established. Then Projection Pursuit Model and spatial autocorrelation method were employed to reveal the Spatial and temporal patterns characteristics of land use multi-functionality in 122 counties (cities) in 2005, 2010 and 2015 of Hunan Province. The results showed that: (1) During the study period, the average level of ecological conservation function was the highest, the agricultural production function was moderate, the tourism function was relatively low. Except for the decline of ecological function, the other functions showed an upward trend, the ascending amplitude of economic production development function and social security residential employment function were obvious.(2) The land use multi-functionality of Hunan Province showed an increasing trend and the spatial heterogeneity was obvious, the value showed an decreasing pattern from east to west. The spatial distribution of single function was significantly different, but the spatial agglomeration feature was always significant. The counties whose agricultural production, economic development and social security residential employment functions higher were mainly concentrated in the Changsha-zhuzhou-xiangtan region of Hunan province or seated along the Beijing-guangzhou railway. The high-value area of ecological conservation function was mainly distributed in the hilly areas such as west, south and southeast of Hunan Province. During the study period, the tourism function agglomeration degree increased gradually, the agglomeration degree of agricultural production function, social security residential employment function and ecological function showed a weakening trend.(3) Compared with the traditional evaluation method, the projection pursuit model is objective and reliable,at the same time it can get rich information representation and reasonable result. The result is effective in the evaluation of the land multifunction.
Key words：land use multi-functionality；spatial-temporal pattern；projection pursuit Model; spatial autocorrelation; Hunan Province