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Preparing a tree planting zone map for landscaping in Hokkaido
Geographical planting distribution of 125 tree species for landscaping in Hokkaido were surveyed by means of questionnaires, and the temperatures parameters which were most closely related to their distribution were examined. By using the isogram
of average annual minimum temperatures partially revised with a Index of Warmth isoline, a tree planting zone map for Hokkaido was prepared. - (SGA)

Reconstruction of past erosional force from tree ring information around the Rokko Mountains, Japan
The AA. investigate the ring widths of a 240-year-old tree, as well as those of 50- to 100-year-old trees in the Rokko Mountains and derived long-term trends in ring width. Rainfall characteristics and tree rings in the area just north of the Rokko

Fodder trees and tree fodder in Nepal.

Forestry, environmental and tree breeding potential of Himalayan conifers in Western Himalaya : environment, problems and development. Volume 1. Environment.

La civilisation japonaise du châtaignier. (The Chestnut-tree civilisation in Japan)

A study was made to determine the impact of a plantation of rubber trees Hevea brasiliensis and an adjacent suburban environment on birds inhabiting the western lowlands of peninsular Malaysia. Distribution of several bird species appeared
to be influenced by local variation in tree density. (l'A.).

Recent changes in the utilization of mountains located in the Japanese beech tree zone. The case of Okitama-Oguni, Yamagata Prefecture.

Population pressure and land use change: from tree crops to sawah in Northwestern Kalimantan, Indonesia

In this paper, the micrometeorological characteristics of rubber tree stands, heat balance, radiative and aerodynamic properties are analyzed with data for three years (April 1986 to March 1989).

No trees grow in this Alpine zone, only shrubs, moss and lichen with a few perennial herbs. The soil is a gley showing peat formation. Four plant groups and fifteen plant communities are identified. They develop their own distinctive ecological

use exhibits altitudinal agricultural land use, intercropping of crops and trees, two-tier and multi-tier land use.

Tree stumps in a standing position have been discovered in 20 to 40 meters of water in Toyama Bay. Radiocarbon dated samples from two of these stumps yielded ages of 8480 70 and 9060 80 years B.P. indicating that the stumps are remnants of a forest

, soil erosion, low level of transport and technological provision. Much effort should be made in terracing hill slopes, full utilization of grassland for animal husbandry, reafforestation and development of tree crops and fishery. (TNC).

. The particularly high percentage of sought-after species, the quantity of growing stock, and the excellent form of the trees make this forest very valuable. Its detailed botanic complexity means that it is far from being rationally harvested at the present time

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