| Forest is a dynamic ecosystem,which is an important natural resource and environmental resource.By timely and accurately grasping the status quo and dynamic changes of forest resources,the article can better study the various factors affecting forest resource changes,further accelerate the sustainable development of forestry,and guide the future development of forestry.In recent years,the economy of Jinjiang City grows rapidly,and the process of urbanization is accelerating,which results in increasingly prominent problems of urban ecological environment.This study uses data from the 2011-2016 Forest Resources Database of Jinjiang City,Fujian Province to summarize and collate data.It mainly used comparative analysis and mathematical statistics analysis methods to study the main characteristics of forest resources in Jinjiang City from time series and space scales.It also studies and analyses the dynamic changes of land resources,dynamic changes of forest resources quantity,dynamic changes of the growth and decline of forest resources,and the dynamic-changes of forest resources quality,etc.The main conclusions are as follows:(1)In 2011-2016,the total forest resources in Jinjiang City increased significantly:the forest area increased by 1 735.17 hm2,the average annual growth rate was 347.03 hm2,and the average annual growth rate was 3.52%.the forest area is also greatly increased,the forest area increased by 4 164.31 hm2,an average annual growth rate of 832.86 hm2,with an average annual growth rate of 8.72%.the forest reserves increased by 202 400m3,with the average annual growth was 40 500m3,and the average annual growth rate was 14.55%.the stand volume per hectare increased by 13.23m3,and the growth rate was 37.90%and the increase is significant.(2)In 2011-2016,the forestry rate and forest coverage rate in Jinjiang City increased.In 2016,the rate of woodland greening reached 89.70%,and the forest coverage rate reached 16.51%,which increased by 3.88%and 4.38%respectively.The average diameter at breast height increased by 1.1 cm,and canopy density increased by 0.08.During the survey period,the total forest resources in Jinjiang City increased significantly,the quality of forest resources gradually increased,and the ecological environment improved significantly.(3)According to the grey correlation analysis method,the degree of influence of each factor on the forest resources in Jinjiang City was obtained.Among them,the correlation between the investment in forest management and the changes in forest resources was small.Larger correlations with changes in forest area are per capita gross domestic product,timber production,and total population in the region.Timber production,regional total population,and afforestation tending area are more relevant to changes in forest stock.Larger correlations are related to the young and middle-age forests area are timber production,afforestation and breeding areas,total population in the region,and GDP per capita.The correlations with recent changes in the area of over-mature forests are greater in terms of timber production,per capita GDP,total population in the region and the area of forest land.The correlation with the accumulation of young and middle-age forests are the total population,timber production,and the forest land area.The factors with a higher correlation with the near-mature forest reserves are the afforestation tending area,the total area population,and the forest land area.Larger correlations with stock volume per unit area are wood production,per capita GDP,and afforestation tending area.(4)This study forecasts the dynamic trends of forest resources according to the objective needs of society and ecology,and puts forward some suggestions on the protection and management of forest resources,the increase of the total amount of forest resources,the improvement of the quality of forest resources,and the promotion of the development of forestry industry,so as to achieve the goal of sustainable forestry development in the whole city. |
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