Dr.Takahashi was came from Niigata city in 1968 and got a doctoral degree from Tokyo University of Agriculture and Technology in 1996 and was employed Chiba University. He makes special study of ecological ecology, revegetation technology and landscape architecture and is investigating improvement planting ground and the characteristics of nutrition dynamics in various green space ecosystems. His present themes are (1) making nutrition dynamics system using spreading of plant waste from pruning on urban planting area, (2) investigation of effects of urbanization on nutrition dynamics of forest ecosystems, (3) evaluation of carbon accumulation on soil of urban parks. He loves field works. His study fields are very variously, forest on mountainous region, Satoyama, urban park and tideland. He is careful to think that his works were become useful for the real world.

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• Takahashi, T., Koshida, J., Nagamine, T. and Kato, K. (2010) Changes in microscopic structure of wood chip by composting, Journal of Japanese Society of Revegetation Technology, 36(1), 183-186.
• Takahashi, T., Kato, H. and Kobayashi, T. (2009) Changes in carbon contents of coppice forest soila after selective cutting, in Noyama-Kita-Rokudoyama Park, Tokyo, Landscape Research Japan Online Vol. 2, 17-20.
• Takahashi, T., Oikawa, N., Okada, H. and kobayashi, T.(2008) The relationships among growth of street trees and chemical and physical characteristics of planting ground in Matsudo city, Chiba prefecture, Journal of Japanese Society of Revegetation Technology, 34(1), 231-234.
• Takahashi, T., Amano, Y., Kuchimura, K. and Kobayashi, T.(2008) Carbon content of soil in urban parks in Tokyo, Japan, Landscape Ecology and Engineering, 4(2), 139-142.
• Ichikawa, T., Takahashi, T. and Kobayashi, T.(2008) The relation between the population of the earthworms and types of vegetation or soil environment, Journal of Japanese Society of Revegetation Technology, 34(1), 15-20.
• Takahashi, T., Hirano, M., Hirano, Y., Shibutani, K. and Kobayashi, T.(2008) Examination of weed control using wood chip made from plant waste, Doboku Gakkai Ronbunshuu G, 64(3), 289-296
• Takahashi, T., Maita, S., Ishii, M. and Ogino, J.(2008) The characteristics of composting of plant waste from pruning using addition of compost and frequently airing, Landscape Research Japan Online, 1, 40-43.
• Takahashi, T. Hirano, Y. and Hirano, M.(2007) Effects of topdressing using compost made from plant waste on growth of Japanese lawngrass (Zoysia japonica), Journal of Japanese Society of Revegetation Technology, 33(2), 380-382.
• Takahashi, T., Yoshida, A. et al.(2006) The characteristics of wood chip composting mixed with sewage sludge compost as submaterial, Journal of Japanese Society of Revegetation Technology, 32(1), 50-55.
• Ichikawa, T., Takahashi, T. et al.(2006) The effects of earthworms on soil microbial activity and the nitrifying activity in field, Journal of Japanese Society of Revegetation Technology, 32(1), 154-158.
• Shimizu, Y., Takahashi, T. et al.(2004) The measurement of NO2 flux on the surface of the sediment at seashores inTokyo Bay, Journal of Japanese Society of Revegetation Technology, 30(1), 199-204.
• Ichikawa, T., Takahashi, T. et al.(2003) Comparison of nutrient dynamics along a slope between artificial Japanese cedar(Cryptomeria japonica) and Japanese cypress(Chamaecyparis obtusa) forests. Journal of Japanese Forestry Society, 85(3), 222-233.
• Takahashi, T., Arai, M. et al.(2001) The effects of chemical characteristics of plant waste and addition of nitrogen or manganese on the characteristics of decomposition, Journal of Japanese Society of Revegetation Technology, 27(2), 448-453.
• Takahashi, T., Haibara, K. et al.(2001) Changes in physical and chemical characteristics of soil of coppice forest made using transference intact surface soil in the Higashi Imperial Gardens, Journal of Japanese Society of Revegetation Technology, 27(2), 430-435.
• Takahashi, T.(2000) Effects of supply of deciduous broad-leaved litter to the forest floor on the soil fertility of a jampanese cypress(Chamaecyparis obtusa) forest, Japanese Journal of Forest Environment, 42(1), 23-38.
• Takahashi, T., Fukabori, M. et al.(2000) The effects of mixing of Trifolium repens and cutting hightsoil chemistry and vegetation growth in Zoisia turf, Journal of Japanese Society of Revegetation Technology, 26(2), 154-158.
• Takahashi, T., Koide, K. et al.(2000) Comparison of soil fertility among different type of vagatations in an urban park "Forest and Park for 21st Century", Matsudo city, Journal of Japanese Society of Revegetation Technology, 25(3), 196-207.
• Takahashi, T., Minami, A. et al.(1999) Comparison of organic matter dynamics in soil between Japanese cedar(Cryptomeria japonica) forest and adjacent Japanese red pine(Pinus densiflora) forest established on flatland, Journal of Forest Research4: 299-302.
• Takahashi, T., Toda, H. et al.(1999) Changes in soil chemical and physical characteristics in Japanese cypress(Chamaecyparis obtusa Endl.) stands by mixture of deciduous broad-leaved trees in the northern Kanto region of Japan, Journal of Forest Research4: 223-228.
• Takahashi, T., Haibara, K. et al.(1994) Nitrogen mineralization of surface soil along slope in sugi and hinoki stands, Japanese Journal of Forest Environment, 36(2), 15-21.