江苏省2017年营造林树种分布与影响因素分析

Distribution and Fluencing Factors of Tree Species Planted in Jiangsu Province in 2017

基于EasyMapGIS、Arcgis平台形成江苏省2017年营造林数据库,对年度造林实绩与树种情况进行概述,讨论了三大板块间造林树种分布与多个量化因子的相关性,并论述了各区域影响树种选择的经济、产业、资源等因素,探讨了利用香农·维纳指数对部分区域分布树种多样性进行评估。结果表明:全省珍彩树种、一般树种、经济树种总体和区域间分布与各板块土地资源、生态现状、产业基础、经济水平、政策导向等因素密切相关,并呈现出树种丰度与均度由南向北递增特点。同时,就当前树种供需矛盾、栽植结构和密度不合理、造林融投不顺等问题进行分析并提出建议。

Based on the acquisition Jiangsu afforestation database in 2017 through EasyMapGIS,desktop Arcgis platform,this article discussed the annual afforestation achievements and the use of tree species,analyzed the correlation between the economic,industrial and resource distribution factors affecting tree species selection among the three plates in detail,and explored the results of Shannon Wiener tree species in different regions.The results show that the distribution structure of the precious and colorized species,general tree species and economic tree species is closely related to the land resources,ecological status,industrial base,economic level,policy orientation and so on.The thesis probed into the contradiction between supply and demand of tree species,the poor comprehensive benefits of afforestation,and the ineffective afforestation mechanism,and put forward the corresponding suggestions.