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Verification of the "regeneration sheltered by fallen trees" hypothesis in poorly recovering burned forests of northern Mongolia and development of methods for promoting natural regeneration.

在蒙古北部恢复不良的烧毁森林中验证“倒下树木遮蔽的再生”假说并开发促进自然更新的方法。

基本信息

批准号：
23405030
负责人：
KUSAKA Shingo
金额：
$ 4.33万
依托单位：
Lake Biwa Museum
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2011
资助国家：
日本
起止时间：
2011-04-01 至 2014-03-31
项目状态：
已结题

项目摘要

Many forest fires have happened since about 30 years ago and regeneration of such burned forests go very badly.So we investigate the regeneration mechanism and the factors inhibiting regeneration of those forests.We sometimes found linear arrangements of trees in those forests. So we hit upon "Regeneration sheltered by fallen trees"hypothesis.We made field experiment on factors inhibiting regeneration in burned area to verify our hypothesis. The data indicates clearly three inhibiting factors, direct sunlight, shortage of seeds and litter. And we have the highest numbers of seed germination in the experimental site of northern side of raking and seeding area. In addition to these results, we found other many samples of "Regeneration sheltered by fallen trees" naturally growing up to sub-trees. From these two additional results, we verified our hypothesis. We made the manual that is useful to promote forest regeneration applying by our hypothesis.

近30年来，我国发生了多起森林火灾，火灾后的森林更新状况很差，因此，我们对火灾后森林的更新机制和影响森林更新的因素进行了研究。为此，我们提出了“倒木遮蔽更新”的假说，并对影响火烧迹地更新的因素进行了田间试验，以验证这一假说。数据表明，有三个抑制因素，阳光直射，种子和凋落物短缺。在耙播区的北方侧试验点种子发芽率最高。除了这些结果，我们还发现了许多“倒木遮蔽再生”的样本自然生长到子树。从这两个额外的结果，我们验证了我们的假设。根据我们的假设，编制了一本促进森林更新的手册。