A maintenance system aimed to control wood vegetation of abandoned paddy fields: Study based on a survey of Ohshima-area Jouetsu-shi Niigata, Japan
2007
Arita, H.(Niigata Univ. (Japan)) | Ohkuro, T.
In the farmland policy of our country today, we must adjust the unstable factors of long-term food supply and demand, while the structural excess of rice crop products is held short-terminable. As a solution for such problems, the authors have proposed the extensive management as a method for the agricultural land resource maintenance. In this paper, the proposal of the method which performs extensive management was tried based on the survey of the tree invasion into abandoned paddy fields, preventing trees' enlargement. It turned out that invaded trees have the following characteristics. (1) They are pioneer type trees. (2) Species of invaded trees differ greatly between dry farm lands and wet farm lands. (3) As for the number of trees and the tree volume, a dry farm land trend to exceed a wet farm land. And as a result of examining based on these, in order to manage abandoned paddy fields simply, eliminating tree vegetation, continuation of the disturbance by annual fallow cultivation etc. was considered to be an effective method.
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