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

(1)目的明确在松材线虫病严重破坏后，如何建设滨海森林，以及建设什么样的森林类型。(2)结果(1)恩州滨海林区编制了3种类型的森林类型图、造林记录和危害分布图，明确了林木危害的现状和特征，根据植被和树木普查结果，将滨海林区划分为6个类型，并进行了区划。调查了土壤光强、土壤水分、土壤饱和度的pH值和电导率等特征，并根据立地条件和物种组成，明确了它们的特征。(2)陕南滨海林区共设置19个样方，进行了树木普查。结果表明，滨海森林分为3种类型，每种类型的结构受高等树种的存在及其密度的影响；沿海森林缺失时，风带盐分到内陆的量增加；沿海森林以萌芽为主，萌芽生长快于苗木的生长；某些鸟类携带邻近地区的种子进入海岸森林。(3)在科学社会中，我们在11月23-25日在静冈县鹿川市举行的日本海岸森林学会第2007届年会上做了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.