A vegetation ecological study for the restoration and rehabilitation of green environment based on the creation of environmental protection forests in Japanese archipelago.

自1972年以来，由当地树种在潜在的自然植被和茂密的人工林(1-3个标准杆平方米)中种植的环境保护林的创建已有1-24年的历史。(1)对1994-1996年的生长数据进行了分析，(2)环境动态比较，(3)物种多样性恢复比较，(4)与天然林恢复及物种多样性、演替速度的比较，(5)建立了环境保护林恢复与恢复及物种多样性的方法和理论。坡面上栽植的苗木生长速度好于平地。事实证明，树木的年龄不能由树的高度和直径来确定。每个个体在同一年龄内表现出不同的生长速度。(2)在数据的基础上对方法学数据进行了讨论。林内环境动态较小，林外(裸地)环境动态较大。(3)在物种多样性(丰富度)方面，鸟栖植物较易进入人工林。在洞穴种植后，10多种植物在种植后4-5年内萌发。以横滨国立大学环保林为例，壳斗科树种的苗木在8年后出现在森林中(以横滨国立大学环境保护林为例)。(4)潜在天然林树冠树种盆栽苗木穴栽比自然演替快50-80年。

The creation of environmental protection forests, which were planted by native tree species in potential natural vegetation with dense plantation (1-3 individuals par square meters), became 1-24 years old since 1972. This project from 1994 to 1996 based on Grand-In-Aid for Scientific Research were summarized in following :(1)Analyzing the growth data in 1994-1996, (2)Comparing environmental dynamics, (3)Comparing the restoration of species diversity, (4)Comparing with rehabilitation of natural forests and species diversity, and succession speed, (5)Establishing the methodology and theory of rehabilitation and restoration of the environmental protection forests and species diversity.(1)The growth rate showed that seedlings of canopy species of the evergreen broad-leaved forests grow 1m par year in first ten years and then make stems thick after ten years. Growth rates of planted seedlings on the slope are better than flat areas. And it was proved that the age of trees cannot be decided regularly from their height and diameters. The each individuals showed different growth rate within same age.(2)The methodological data was discused based on data. The environmental dynamics are small in forests, and big outside of forests (on the bare land).(3)In species diversity (richness), plants by ornithocory could get in planted forests easily. After dens plantation over ten species germinated from 4-5 years after plantation. Seedlings of Fagaceae species occurred in forests after eight years (from the example of environmental protection forests in Yokohama National University).(4)The plantation method, with dens plantation of potted seedlings from canopy species in potential natural forests, can be grow 50-80 years faster than natural succession.