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通过如东县海堤林业资源调查和树种、林分的蓄积与生长分析,提出了对一、二线海堤防护林采伐更新混交建议。对海堤防护林资源生态经济效益作了初步评估:(1)海堤防护林资源直接经济效益59400万元;(2)间接经济效益(按10a算)7544万元;(3)海堤防护用材林各树种纯收入高低排序为柳杉>杨树>水杉>楝树>刺槐>泡桐>杂阔,海堤防护经济林各树种纯收入高低排序为桃、梨>湖桑>无花果>竹子。为经营、保护海堤防护林林业资源及规划建设高标准、多功能的综合沿海防护林体系生态工程提供理论依据。
Based on the survey of forestry resources in Rudong seawall and the stocking and growth analysis of tree species and stand, this paper puts forward suggestions for cutting up and replacing mixed seawall shelter forests in the first and second line. (1) The direct economic benefits of the seawall shelterbelts resources are 594 million yuan; (2) The indirect economic benefits (calculated according to 10a) are 75.44 million yuan; (3) The net income of the tree species ranked as follows: Populus> Populus> Metasequoia> Neem> Robinia pseudoacacia> Paulownia> Acacia, seawall protection Economic forest The net income of each tree was sorted by peach, pear> lake> fig> bamboo. Provide theoretical basis for the operation and protection of the forestry resources of the seawall protection forest and the planning and construction of a high standard and multifunctional integrated coastal shelterbelt ecosystem engineering.