The Study On Land Use Change And Ecosystem Services Value In Jinjiang

Based on the data of land use status in Jinjiang from 1996-2007, the characteristics and dynamic changes of land use of Jinjiang were analyzed; On the basis of related evaluation theory with the physical truth of the researched area, the related parameters of the typical model was adjusted, and then the improved-type evaluated model of ecosystem service value was built to analyze the dynamic change of ecosystem service value in Jinjiang. The results showed that:(1)The agricultural land, construction land and unutilized land occupied 43.31%,42.49% and 14.20% respectively in Jinjiang in 2007. (2) From 1996 to 2007, the land use had changed in Jinjiang——the area of construction land had increased, and the area of cultivated land among the other kinds of land use which had decreased most. Hereby the structure of land use was not reasonable. (3) The most contribution rate of wetland ecosystem was 33.86% in Jinjiang; The value of waste treatment, water conservation, climate regulation, soil formation and erosion control took up 24.67%,21.31%,15.48% and 10.66% respectively. (4) The ecosystem service value in Jinjiang was 19855.99 ten-thousand-yuan, and had falled from 127231.35 to 107375.36 ten-thousand-yuan from 1996 to 2007; The ecosystem service value in all town of Jinjiang showed downtrend and its change was different in different regions, which was based on to divided entire area into three classes:Ⅰ,Ⅱ,Ⅲ. (5) Different land use types had different correlation with ecosystem service value, its order was as follows: forestland> wetland> water> garden plot> cultivated land> unutilized land> grassland > construction land. The most influence to the ecosystem service value was forestland, 0.9061, and the little was construction land,0.5574. (6) According to the prediction of Grey GM (1,1), the ecosystem service value of Jinjiang will down to 10245.38,97303.55 and 92691.24 ten-thousand-yuan in 2011,2014 and 2017 year. Last, the countermeasure of land use was put forward for actively developing of ecosystem service.