A study on the recovery process and the prospective forest type of coastal pine forest after the insect disaster

(1)目的：明确在松材枯萎病严重破坏后如何建立沿海森林，建立什么样的森林类型。为此，研究了2006 - 2007年恩树那达和湘南沿海森林的恢复过程。(2)结果(1)恩树—那达滨海森林绘制了3种森林类型图、种植记录图和破坏分布图，明确了恩树—那达滨海森林的破坏现状和特征。根据植被和树木普查结果，将沿海森林划分为6种类型，并进行了排序。我们还对当地居民进行了问卷调查，揭示了他们对沿海森林的预期形象。调查了光照强度、土壤水分、土壤饱和ph和ec的特征，并根据立地条件和物种组成明确了它们的特征。(2)湘南沿海森林：设置19个样地，进行树木普查。结果表明，该森林可分为3种类型，每种类型的结构都受高等树种的存在及其密度的影响。在没有沿海森林的情况下，风给内陆带来的盐量增加了。沿海林以发芽为主，发芽生长快于幼苗生长。经查明，一些鸟类将邻近地区的种子带入沿海森林。(3)在科学学会的报告我们在11月23日至25日在静冈县角川市举行的2007年日本沿海森林学会年会上做了3次口头报告和3次海报报告。

(1) AimWe aimed at making clear how we can establish the coastal forest and what kind of forest type we should establish after the severe damage by pine wilt desease. For this purpose, we investigated the revegetation process of Enshu-nada and Shonan coastal forests from 2006 to 2007.(2) Result(1) Enshu-nada coastal forestWe made 3 kinds of maps of forest type, planted records and the damage distribution and made clear the present conditions and features of damage.As the result of vegetation and tree census survey, we divided coastal forest into 6 types and ordinated them. We also did the questionnaire to the local people and disclosed their prospective image of coastal forest.We surveyed the features of light intensity, soil moisture, pH&EC of soil saturation and made clear their features by site conditions and species composition.(2) Shonan coastal forestWe set 19 quadrates and surveyed tree census. As a result, We made cleared that the forest was divided into 3 types and the structure of each type was influenced by the existence of higher tree species and their density.The amount of salt brought by wind to inland increased at the point of absence of coastal forest.The coastal forest was established with sprouting mainly and the growth of sprouting was faster than that of seedlings.It was cleared that some kinds of birds carried seeds from neighboring district into coastal forest.(3) Presents in scientific societyWe presented 3 oral and 3 poster presentations in the 2007th annual congress of the Japanese society of coastal forest held in November 23-25th, Kakegawa city, Shizuoka prefecture.