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(Upload on October 17 2017) [ 日本語 | English ]

Nature in the eco-campus of Hokkaido University. Introduction to botany






Mount Usu / Sarobetsu post-mined peatland
From left: Crater basin in 1986 and 2006. Cottongrass / Daylily

Syllabus (My turn: 2016, 2015, 2014, 2013,2012), Nature in the eco-campus (JPN)
Books for plant taxonomy, field equipment, field training, plot

Websites


My turn


2017

  1. April 20 2017: Ice break
  2. May 11: Measure tree sizes to understand CO2 flux [P Handout ]
    wood density
  3. July 13: Measure vegetation and the environments to understand the relationships between them (1)
    • light intensity
    • soil hardiness
  4. July 20: Measure vegetation and the environments to understand the relationships between them (2)
  5. August 4: Presentation on each group

2016

  1. May 12: Measure tree sizes to understand CO2 flux [P Handout ]
    wood density
  2. July 7: Measure vegetation and the environments to understand the relationships between them (1)
    • light intensity
    • soil hardiness
  3. July 21: Measure vegetation and the environments to understand the relationships between them (2)

2015

  1. May 7: Measure tree sizes to understand CO2 flux
    wood density
  2. July 2: Measure vegetation and the environments to understand the relationships between them (1)
    • light intensity
    • soil hardiness
  3. July 16: Measure vegetation and the environments to understand the relationships between them (2)

130711

2014

  1. May 1: Measure tree sizes to understand CO2 flux
    wood density
  2. June 26: Measure vegetation and the environments to understand the relationships between them (1)
    • light intensity
    • soil hardiness
  3. July 10: Measure vegetation and the environments to understand the relationships between them (2)

2013

April 18: Guidance

This field training is basically for Japanese undergraduate students.
I have three turns.

  1. May 2: Measure tree sizes to understand CO2 flux
  2. July 4: Measure vegetation and the environments to understand the relationships between them (1)
    • light intensity
    • soil hardiness
  3. July 11: Measure vegetation and the environments to understand the relationships between them (2)

2012

  1. Measure tree sizes to understand CO2 flux
  2. Measure vegetation and the environments to understand the relationships between them (1)
  3. Measure vegetation and the environments to understand the relationships between them (2)

Nature in the campus (北大構内)


Forest on the banks of the Sakushu-Kotoni River (サクシュコトニ川の河畔林)


Gobo This forest on the Sakushu-Kotoni riverside is somewhat wet and semi-natural. It is composed of native trees, e.g., Ulmus davidiana var. japonica and Morus australis, which are mixed with exotic tree species such as Acer negundo and Populus spp.

Gobo The herbaceous plants found at this site comprise native species such as Urtica plathyphylla, Cardiocrinum cordatum var. glehnii in addition to many invading exotic and escaped horticultural species, i.e., Aegopodium podagraria, Geranium robertianum, Arctium lappa, Symphytum × uplandicum.

(2015-05-25)

Ono Pond (大野池)


duckwater-lily

This pond along the stretch of the Sakushu-Kotoni River was named after Porf. Kazuo Ono, of Faculty of Engineering, for his endeavor to maintain it. In ancient times, this pond was surrounded by tall trees, such as Ulmus davidiana var. japonica and Phellodendron amurensis entwined with Vitis coingnetiae, as well as shrubs such as Sambucus racemosa ssp. kamtschatica.
The herbaceous species observed in this area include Lysichiton camtschatcense in April and Nymphaea cv. plantings during July-August. Among the birds seen in this area area Parus palustris (throughout the whole year), Ficedula narcissina (during summer), and Anas platyrhynchos (from spring to fall).

Keiteki Wood (恵迪の森)


This site with the best preserved natural environment was once called "Genshi-rin" meaning primeval forest. Representatie tree species occurring here are Cercidiphyllum japonicum, Acer pictum ssp. mono, and Ulmus davidiana var. japonica. The herbaceous vegetation growing on the wood floor is characterized by Corydalis ambigua, Gagea lutea, Trillium camschatcense - the symbol mark of Hokkaido University, and Anemone flaccida.
The following birds can be commonly observed in this area: Parus palustris and Dendrocopos major all year round; Sturnus philippensis during summer, and Turdus naumanni during the winter monthds.

(2014-10-07)

belt transect
A belt transect established in Keiteki Wood in 1984
Summary: The present paper, based on a study made in 1988, examines the types of woods and trees on the Sapporo campus of Hokkaido University. These woods are important as remnants of pre-Meiji era (pre-development times of Hokkaido) forests and have a very important position as a large-scale green space in Sapporo, the largest city north of Tokyo.
1. Tree species except shrubs for garden greening comprised 30 families, 49 genera, and 92 species. The percentage of deciduous broad-leaved tree species on the campus was very high; 78.3%. The percentage of tree species introduced from foreign countries including deciduous trees was 31.5%. The percentage of spontaneous tree species was 50.0% of the broad-leaved trees found in Hokkaido, and 29.3% of the total species on the campus.
2. The number of individuals over 6 cm in DBH (diameter at breast height) was 6,670. The numerical proportion of major species individuals was as follows: Ulmus davidiana var. japonica 21.2%, Populus spp. (Poplar) 9..6%, Betula platyphylla var. japonica 9.4%, Taxus cuspidata 8.5%, Fraxinus mandshurica 5.1%. The percentage of spontaneous tree species was approximately 45 %.
3. The location and size of the tallest tree individuals are clarified in this paper and the tree-lined avenues are outlined.
4. The species composition and regeneration of 9 wood stands (Sl-S9) over 25 m × 25 m on the campus were investigated.
5. The physiognomy of woods on the campus has been changed by various anthropogenic agencies such as disturbance of surface soil, lowering of water level, felling, and decline of wooded areas. In order to preserve such large-scale remnant spaces in Sapporo, long-term, well-planned management of the environment should be carried out based on scientific research.

(Haruki et al. 1989 J/E)

Trail of man sites (人類遺跡トレイル)


Burned Pit Dwelling (焼失住居跡)

Locality: Japanese Archery Training Hall (Kyudoujou), K-39 site
  • Period: Satsumon culture
  • Character: Settlement
  • Topographical setting: Gentle slope along left bank of the Sakushu-Kotoni river in its upper reaches
  • Archaeological features: Pit dwelling (1), dumps of charcoal (2)
  • Excavation: 2006
There is one pit dwelling (ca. 10th Century) belonging to the Middle Satsumon in this site. Carbonized woods that originated from roof and walls of house were unearthed here. Walnuts and other carbonized seeds were also found in this pit dwelling.

Unusually large size flue built in ancient cooking stove
(長大な煙道付きのカマド)

Location: Reconstruction area of the Central Library, K39 Site
  • Period: Satsumon culture (c. 8th century)
  • Character: Habitation site
  • Topographical setting: Aling the leftt bank of the Sakushu-Kotoni Creek
  • Archaeological features: 1 pt dwelling
  • Excavation: 2009-2010
The coolking stove associated with unusually large size flue dting to the Early Satsumon culture (ca. 8th century) was found from the southeastern wall of the pit dwelling. The flue extending from the wall was probably covered and arranged with split timbers. The cooking stove and the flue have been reconstructed by the remarkable method (named 3D Relief-peels) for future exhitits inside.

Gatehouse (the former gatehouse of Sapporo Agicultural College)


Year of construction: 1904
Structure type: wooden
Designed by: Sapporo Branch of Construction Section of the Education Ministry
Constructor: Kiichiro Ohsima
This building was built as a gatehouse of Sapporo Agricultural College together with the former Front Gate that is actually the South Gate at present. Originally, it was located on the opposite sidee of the road, as pointed by the red circle on the photograph; and the inner wooden gate was built in front of the former structure. In the Taisho Era, it was moved to the present location and subjected to extension, while the inner gate was removed. Originally, the building was half of the present size. The decorations such as a crest on the gable roof and the scroll of brackets under eaves in the original building have been removed. Red gateposts and the white old gatehouse together give the the feeling of the atmosphere of the Sapporo Agriculture College days.
Gate

Former Specimen Room of the Agriculture Department of Hokkaido Imperial University


旧北海道帝国大学農学部昆虫学標本室
Year of construction: 1927
Structure type: stone and reinforced concrete
Designed by: building and repairs section of Hokkaido Imperial University (Otoji Masutani)

The first Entomology Laboratory in Japan was opened in Sapporo Agricultural College in 1896. Professor Shonen Matsumura, who took charge of the laboratory, filed a petition for the construction of a specimen room over many years, and as a result, the construction of this fireproof building was materialized. This building has a stone wall while reinforced concrete is used in the floor and ceiling. The windows are equipped with fire shutters. In the past, it was connected with other facilities such as he lecture hall in the south and the insect breeding room. Dr. Matsumura, who stayed in the laboratory since his graduation of Sapporo Agricultural College in 1895 and became professor in 1902, was the person that laid the foundation of entomology in Japan.
specimen room
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