东灵山地区退化生态系统的恢复与重建实验

RESEARCH ON RESTORATION OF WARM TEMPERATE DEGRADED ECOSYSTEM IN DONGLING SHAN AREA

在东灵山地区的三个地点进行了退化生态系统的恢复与重建实验，栽种了日本落叶松（Ｌａｒｉｘｋａｅｍｐｆｅｒｉ）、华北落叶松（Ｌａｒｉｘｐｒｉｎｃｉｐｉｓ－ｒｕｐｐｒｅｃｈｔｉ）、核桃楸（Ｊｕｇｌａｎｓｍａｎｄｓｈｕｒｉｃａ）、水曲柳（Ｆｒａｘｉｎｕｓｍａｎｄｓｈｕｒｉｃａ）等四种植物，通过五年的生长观察，实验证明日本落叶松在本区生长良好，在本地区可以作为绿化树种及用材树种，人工落叶松林新植被生态系统的引进是成功的；华北落叶松在本地区较高海拔１７００ｍ左右也可以成活，可以作为绿化树种，核桃楸和水曲柳在海拔６００ｍ左右的较干旱环境下生长较慢，核桃楸和水曲柳在干旱环境如果没有较好的抚育措施，则成活率低，作为绿化树种不可取。

In Donglingshan area,We tried planting 4 tree species,including Larix kaempferi,Larix principisrupprechtii,Juglans mandshurica and Fraxinus mandshurica.By following the increment of plantation of 4 years old,it was shown that Larix kaempferi grew well and rapidly.It could be regarded as a green tree.Larix principisrupprechtii can survive at alt.1700m above sea level.Juglans mandshurica and Fraxinus mandshurica grew very slowly and the survival rate was very low in dry area of Donglingshan.They cannot grow well without any naturing mreasures.