| Forest resources are the basis of biodiversity and the basis of ensuring the development of forestry industry.The analysis and Research on the changes of quantity,quality and structure of forest resources can timely grasp the trend of dynamic change and provide a scientific and reliable basis for the sustainable and stable development of forest resources.Jin'an district,located in the northeast of Fuzhou ciy,as a national green model area and top 100 green development areas,has played a unique advantage and an important role in promoting Fuzhou's ecological civilization construction and serving the overall situation of the city's forestry industry development.Based on the data of forest resources database in Jin'an district from 2013 to 2017,this paper studied and analyzed the current situation,dynamic change law and related influencing factors of forest resources in Jin'an district from the aspects of forest area,stock volume,forest species structure and forest age structure by means of mathematical statistics,comparative analysis and grey relational analysis,and pointed out the current management and management of forest resources.At last,according to the actual situation of Jin'an district,the paper puts forward concrete opinions and suggestions on promoting the sustainable and stable development and management and utilization of forest resources in the future.The main conclusions of this study are as follows:(1)The present situation of forest resources in Jin'an district:the forest coverage rate is 67.06%,the total area of forest land is 42795.64hm~2,and the total volume of living trees is 3641813 m~3.Tree forest land is the main one,with an area of 29808.23 hm~2 and a volume of 3401190m~3,accounting for 69.65%of the total area of forest land and 93.39%of the total volume,respectively.The origin of forest resources in Jin'an district is mainly natural.The area of natural forest is 25067.64 hm~2,accounting for 61.65%,and the volume is 2343546 m~3,accounting for64.41%.Tree stands in Jin'an district are mainly composed of shelter forests,special-purpose forests,timber forests and fuelwood forests.Among them,shelter forests account for the largest proportion(45.66%),special-purpose forests and timber forests take the second place,and fuelwood forests are the least;in the age group of arbor forests,the proportion of over-mature forests is the highest(40.33%),middle-aged forests and near-mature forests take the second place,and the proportion of young forests is the least.(2)Dynamic changes of forest resources from 2013 to 2017:the total area of forest land increased by 143.26 hm~2,the forest stock increased by 178590 m~3,and the forest coverage increased from 65.1%to67.06%.The number of shelterbelts,special-purpose forests,timber forests and fuelwood forests increased by 67.83 hm~2,163.94 hm~2,292.96hm~2 and 173.41 hm~2,respectively.Overmature forests increased by4330.43 hm~2,while young,middle-aged and near-mature forests decreased by 2446.86 hm~2,399.14 hm~2 and 786.29 hm~2,respectively.(3)According to the grey relational analysis method,the influence degree of each factor on forest resources in Jin'an District is obtained:the correlation effect of timber yield on the change of forest resources is small,the correlation effect of forest area on the change of forest area is large,the correlation effect of total regional population on the change of forest stock and the change of unit area stock is large,and the per capita gross domestic product on the area of middle-aged and young forests is large.The correlation between the change of stock and the change of area and stock of near-mature and over-mature forests is significant.(4)Based on the analysis results of the current situation,characteristics and trends of forest resources structure over the years,and combined with the actual situation of Jin'an district,some suggestions and suggestions are put forward for the sustainable and stable efficient development and management and utilization of forest resources in the future. |
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