The effect of converting a native broad-leaved forest to a coniferous plantation forest on annual water yield: A paired-catchment study in northern Japan

2008 ◽  
Vol 255 (3-4) ◽  
pp. 880-886 ◽  
Author(s):  
Hikaru Komatsu ◽  
Tomonori Kume ◽  
Kyoichi Otsuki
Keyword(s):  
Water Yield ◽  
Plantation Forest ◽  
Broad Leaved Forest ◽  
Coniferous Plantation ◽  
Paired Catchment ◽  
Annual Water ◽  
Leaved Forest ◽  
Northern Japan

scholarly journals Comparison of vulnerability to catastrophic wind between Abies plantation forests and natural mixed forests in northern Japan

2019 ◽  
Vol 92 (4) ◽  
pp. 436-443 ◽  
Author(s):  
Junko Morimoto ◽  
Kosuke Nakagawa ◽  
Kohei T Takano ◽  
Masahiro Aiba ◽  
Michio Oguro ◽  
...  
Keyword(s):  
Climate Change ◽  
Forest Structure ◽  
Natural Forests ◽  
Plantation Forest ◽  
Management Options ◽  
Mixed Forests ◽  
Plantation Forests ◽  
Coniferous Plantation ◽  
Strong Winds ◽  
Northern Japan

Abstract The risk of extreme events due to weather and climate change, such as winds of unprecedented magnitude, is predicted to increase throughout this century. Artificial ecosystems, such as coniferous plantation forests, can suffer irreversible deterioration due to even a slight change in environmental conditions. However, few studies have examined the effects of converting natural forests to plantations on their vulnerability to catastrophic winds. By modelling the 2004 windthrow event of Typhoon Songda in northern Japan using the random forest machine learning method, we answered two questions: do Abies plantation forests and natural mixed forests differ in their vulnerability to strong winds and how do winds, topography and forest structure affect their vulnerability. Our results show that Abies plantation forests are more vulnerable to catastrophic wind than natural mixed forests under most conditions. However, the windthrow process was common to both types of forests, and the behaviour of wind inside the forests may determine the windthrow probability. Future management options for adapting to climate change were proposed based on these findings, including modifications of plantation forest structure to reduce windthrow risk and reconversion of plantations to natural forests.

Development and survival of leaves in Magnolia obovata in a deciduous broad-leaved forest in Hokkaido, northern Japan

1987 ◽  
Vol 65 (2) ◽  
pp. 412-417 ◽  
Author(s):  
Kihachiro Kikuzawa
Keyword(s):  
Seasonal Changes ◽  
Shoot Tip ◽  
Emergence Pattern ◽  
Basal Leaf ◽  
Leaf Emergence ◽  
Magnolia Obovata ◽  
Broad Leaved Forest ◽  
Terminal Buds ◽  
Leaved Forest ◽  
Northern Japan

Seasonal changes were determined for leaf numbers on shoots and primordial and embryonic leaf numbers in terminal buds of Magnolia obovata growing in a deciduous broad-leaved forest in Hokkaido, northern Japan. Leaf-emergence pattern was "flush and succeeding type," i.e., many of the preformed leaves in a bud emerged at one time and after that several leaves appeared one by one successively. The lamina of the basal leaf was abortive in the bud and fell immediately after budbreak. The laminae of the shoot-tip leaves aborted after leaf emergence stopped, leaving stipules of the same leaves enclosing the bud. Such abortive laminae indicate that the shoot structure of M. obovata was evolved from homonomous to heteronomous structure. Magnolia obovata was consistently found in many types of forest but did not become dominant in number or in volume. This species was usually found in forest gaps and occasionally attained the canopy of the stand. Shoot structure of M. obovata was assumed to have changed in accordance with the leaf-emergence pattern, which is an adaptation of this species to its habitat.

Classification of vegetation in Cucphuong National Park with the aim of large-scale mapping, Vietnam

1996 ◽  
pp. 64-67 ◽  
Author(s):  
Nguen Nghia Thin ◽  
Nguen Ba Thu ◽  
Tran Van Thuy
Keyword(s):  
National Park ◽  
Large Scale ◽  
Satellite Images ◽  
Field Work ◽  
Aerial Photographs ◽  
Vegetation Map ◽  
Dense Forest ◽  
Broad Leaved Forest ◽  
Leaved Forest

The tropical seasonal rainy evergreen broad-leaved forest vegetation of the Cucphoung National Park has been classified and the distribution of plant communities has been shown on the map using the relations of vegetation to geology, geomorphology and pedology. The method of vegetation mapping includes: 1) the identifying of vegetation types in the remote-sensed materials (aerial photographs and satellite images); 2) field work to compile the interpretation keys and to characterize all the communities of a study area; 3) compilation of the final vegetation map using the combined information. In the classification presented a number of different level vegetation units have been identified: formation classes (3), formation sub-classes (3), formation groups (3), formations (4), subformations (10) and communities (19). Communities have been taken as mapping units. So in the vegetation map of the National Park 19 vegetation categories has been shown altogether, among them 13 are natural primary communities, and 6 are the secondary, anthropogenic ones. The secondary succession goes through 3 main stages: grassland herbaceous xerophytic vegetation, xerophytic scrub, dense forest.

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