Cultural service provided by Satoyama landscape
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Transcript of Cultural service provided by Satoyama landscape
Cultural service provided by Satoyama landscape
and its role for the conservation of biodiversity
Takakazu YUMOTO Research Institute for Humanity and Nature (RIHN)
Satoyama : a heavily human-impacted ecosystem which people have been repeatedly used, for harvesting firewood, making charcoals, collecting litter and leaved-branches for manure, obtaining wild plants and fungi for foods for several hundreds years.
Satoyama: an ecosystem which has been modified by human being for the purpose of obtaining provisioning services in sustainable ways. Satoyama connotes not only the landscape itself, but also traditional ecological knowledge (TEK) for obtaining sustainable ecosystem service.
Satoyama landscape: a traditional rural landscape in Japan (not only secondary forest, but also including farmlands) Satoyama landscape is characterized by a mosaic of different land uses to obtain different types of ecosystem services. In the Japanese Archipelago, paddy field cultivation began in the small basin, alluvial fan and fluvial terrace, not in large delta. Owing to tiny and fragmented topographic areas, monoculture has not developed until recently.
As Satoyama provides various materials, people have intentionally kept high diversity of useful plants and animals. Also, as Satoyama is a mosaic of various land use and provides various habitats including ecotone, unintentionally high biodiversity has been kept too.
第2の危機
The area of secondary forest : 77,000 km2
(it accounts for 21 % of total area of Japan) The area of agricultural use: 80,000 km2
43% of total area is human-impacted landscape.
The human-impacted landscape accounts for 49% of hot spots for animals (≥5 spp. of endangered species within 10 X 10 km)
And55% of hot spots for plants (≥5 spp. of endangered species within 10 X 10 km)
A mosaic of Satoyama landscape including agricultural lands as well as sacred forests may have nourished Japanese sensibility to nature: to love the landscape as a miniature garden, to love a moderate mixture of nature and artifact, or to love delicate differences and changes in nature. Such a Japanese sensibility is represented as an art of gardening e.g. Katsura Rikyu Imperial Villa, which shows a harmonic combination of nature and artifact.
People used small twigs and leaves for manure.“Illustration Guide to Zenkouji Temple (1849)”
How people made Satoyama landscape?
“Everyday cutting grass”
A village of 100 families( 25 acre of paddy fields ) needed:
1) 250 ~ 300 acre of woodland or grassland for fertilizing their paddy field
2) 60 ~ 75 acre of woodland for providing house -keeping fuel
Tokoro (1980)
Evergreen Board-leaved Forest
Increasing Pines
Bare Hill and Pine Forest
Pine Forest
Pine Forest and Evergreen Forest
Recession of Pine Forest
Before Heian~8th century
Heian, Kamakura8th century~
Muromachi, Edo,Meiji15th century~
1960’s
After 1970’s
Present
Era Social changes
Timber for construction
Fire woods and manure
Reforestation
Fuel revolution
Killed by nematodes
Vegetation changes in Kyoto Basin
Evergreen Board-leaved Forest
60
80
100
120
140
160
180
200
220
240
260
280
300
Depth (cm)
1310
920
290
Dates (cal yr B.P.)
20 40
Quercus subg. Cyclobalanopsis
20 40 60 80 100
(%)
Pinus Fagopyrum
+
Villagers in Midoro bought the right of grass harvest in Kibune (AD1599)
Foundation of Heian Capital (AD794)
Pottery kilns were made
(6-7th century)
Pine forest in Grand View in Capital (ca.
AD1660)
Bare hills and sparse pine trees in
Grand View in Capital (AD1530/1550)
Pollen analysis at Midoro-ga-ike,Kyoto basin
AD1660
ca
AD1030
AD640
Tricoloma matsutake (S. Ito et Imai) Sing. (Matsu-take: pine mushroom)forming mycorhiza with P. densiflora . None has succeed to cultivate it so far.
Pine mushroom is one of the Japanese delicacies in autumn, the smell is special. Scent of it is very relished in Japan and some other countries in East Asia, but it adds only bad odor for people in other region of the world. Pine mushroom is consumed only in East Asia.
1961 1975 1987 2004
清水山
知恩院
粟田山
清水寺
Enlargement of a evergreen broad-leaved species and decline of pine forests.
6.9ha 19.0ha 25.6ha 32.1ha
12,222t( 1941)
’50: 4,985t
’60: 1,707t
Domestic: 51 t
’30 : 7,582t
Import:1,554 t (2007)
Production and import of pine mushroom
Ecosystem services: benefits to mankind provided by ecosystem (Millennium Ecosystem Assessment)
Regulating
Climate
Pest
Flood
Detoxification
Provisioning
Food
Water
Fuel
Fiber
Chemical
Genetic resource
Cultural
Spiritual
Recreation
Aesthetic
Imagination
Education
Communal
Symbolism
SupportingSoil formation
Nutrient cycling
Primary production
Sustainability
A mosaic land use for obtaining various ecosystem services can be found not only in Japan, but also in other regions in the world. It is called as Satoyama in Japan, Maeul in Korea, Munoa in Sarawak (Iban), Malaysia and so on. Especially regions with subsistence agriculture based on paddy field have their own TEK to maintain and utilize various plant materials in sustainable ways, which lead to, more or less, the conservation of biodiversity intentionally and unintentionally.
A message from Satoyama studies is not a nostalgic one “going back to the past”, but a highly contemporary one: TEK in each region and area for obtaining ecosystem services in sustainable way gives us a hint for building new lifestyles of health and sustainability, and for establishing a compatible way of biodiversity conservation and utilization.