Proposal of methods for securing water resources in Japan

• Project/Area Number: 20780119
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Forest science
• Research Institution: Kyushu University
• Principal Investigator: KOMATSU Hikaru Kyushu University, 大学院・農学研究院, 助教 (70432953)
• Project Period (FY): 2008 – 2009
• Project Status: Completed (Fiscal Year 2009)
• Budget Amount: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2009: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2008: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
• Keywords: 水資源涵養・水質 / 人工林 / 間伐 / ダム / 渇水緩和

Research Abstract

Forests are mentioned as "green dams". Some people speculate that forest management can be alternative for dam reservoirs from the viewpoint of securing water resources. We examined validity of this speculation. Increase in low flow due to forest management was higher than that due to dam reservoirs for six of 45 dam reservoir watersheds in Japan. Increase in low flow due to forest management was lower than that due to dam reservoirs for the remaining 39 dam reservoir watersheds. Thus, the speculation was invalid for most cases in Japan.

Research Products

• [Journal Article] Azimuthal variations of sap flux density within Japanese cypress xylem trunks and their effects on tree transpiration estimates. (2010)
  • Author(s): Tsuruta K, Kume T, Komatsu H, Higashi N, Umebayashi T, Kumagai T, Otsuki K
  • Journal Title: Journal of Forest Research (印刷中)
  • NAID: 10029731994
• [Journal Article] Modeling seasonal changes in the temperature lapse rate in a northern Thailand mountainous area. (2010)
  • Author(s): Komatsu H, Hashimoto H, Kume T, Tanaka N, Yoshifuji N, Otsuki K, Suzuki M, Kumagai T
  • Journal Title: Journal of Applied Meteorology and Climatology accepted
• [Journal Article] A simple model to estimate monthly forest evapotranspiration in Japan from monthly temperature. (2010)
  • Author(s): Komatsu H, Kume T, Otsuki K
  • Journal Title: Hydrological Processes (印刷中)
• [Journal Article] Spatial and temporal variations in summer precipitation in Japanese mountain areas. (2010)
  • Author(s): Shinohara Y, Kume T, Komatsu H, Otsuki K
  • Journal Title: Hydrological Processes (印刷中)
• [Journal Article] Did annual runoff and low flow decrease with reduced forestry practices in Japan (2010)
  • Author(s): Komatsu H, Kume T, Shinohara Y, Miyazawa Y, Otsuki K
  • Journal Title: Hydrological Processes
• [Journal Article] 森林回復が流出に及ぼす影響-地質の異なる2流域における検討- (2010)
  • Author(s): 藏本康平, 篠原慶規, 小松光, 大槻恭一
  • Journal Title: 水文・水資源学会誌 23 Pages: 32-42
  • NAID: 10026220539
• [Journal Article] Spatial variations in throughfall in a Moso bamboo forest: sampling design for the estimates of stand-scale throughfall. (2010)
  • Author(s): Shinohara Y, Onozawa Y, Chiwa M, Kume T, Komatsu H, Otsuki K
  • Journal Title: Hydrological Processes 24 Pages: 253-259
• [Journal Article] 管理放棄されたヒノキ人工林における樹冠遮断量の計測 (2010)
  • Author(s): 篠原慶規, 井手淳一郎, 東直子, 小松光, 久米朋宣, 智和正明, 大槻恭一
  • Journal Title: 日本森林学会誌 92 Pages: 54-59
  • NAID: 10025983091
• [Journal Article] Water resource management in Japan-forest management or dam reservoirs (2010)
  • Author(s): Komatsu H, Kume T, Otsuki K
  • Journal Title: Journal of Environmental Management 91 Pages: 814-823
• [Journal Article] Effects of sample size on sap flux-based stand-scale transpiration estimates. (2010)
  • Author(s): Kume T, Tsuruta K, Komatsu H, Kumagai T, Higashi N, Shinohara Y, Otsuki K
  • Journal Title: Tree Physiology 30 Pages: 129-138
• [Journal Article] Spatial variations in throughfall in a Moso bamboo forest : sampling design for the estimates of stand-scale throughfall. (2010)
  • Author(s): Shinohara Y, Onozawa Y, Chiwa M, Kume T, Komatsu H, Otsuki K.
  • Journal Title: Hydrological Processes 24 Pages: 253-259
  • Peer Reviewed
• [Journal Article] Water resource management in Japan-forest management or dam reservoirs? (2010)
  • Author(s): Komatsu H, Kume T, Otsuki K.
  • Journal Title: Journal of Environmental Management 91 Pages: 814-823
  • Peer Reviewed
• [Journal Article] Effects of sample size on sap flux-based stand-scale transpiration estimates. (2010)
  • Author(s): Kume T, Tsuruta K, Komatsu H, Kumagai T, Higashi N, Shinohara Y, Otsuki K.
  • Journal Title: Tree Physiology 30 Pages: 129-138
  • Peer Reviewed
• [Journal Article] Spatial and temporal variations in summer precipitation in Japallese mountain areas. (2010)
  • Author(s): Shinohara Y, Kume T, Komatsu H, Otsuki K.
  • Journal Title: Hydrological Processes (印刷中)
  • Peer Reviewed
• [Journal Article] Azimuthal variations of sap flux density within Japallese cypress xylem trunks and their effects on tree transpiration estimates. (2010)
  • Author(s): Tsuruta K, Kume T, Komatsu H, Higashi N, Umebayashi T, Kumagai T, Otsuki K.
  • Journal Title: Journal of Forest Research (印刷中)
  • Peer Reviewed
• [Journal Article] A simple model to estimate monthly forest evapotranspiration in Japan from monthly temperature. (2010)
  • Author(s): Komatsu H, Kume T, Otsuki K.
  • Journal Title: Hydrological Processes (印刷中)
  • Peer Reviewed
• [Journal Article] Did annual runoff and low flow decrease with reduced forestry practices in Japan? (2010)
  • Author(s): Komatsu H, Kume T, Shinohara Y, Miyazawa Y, Otsuki K.
  • Journal Title: Hydrological Processes (掲載決定)
  • Peer Reviewed
• [Journal Article] Rainfall interception in a moso-bamboo (Phyllostachys pubescens) forest. (2009)
  • Author(s): Onozawa Y, Chiwa M, Komatsu H, Otsuki K
  • Journal Title: Journal of Forest Research 14 Pages: 111-116
  • NAID: 10029317642
• [Journal Article] 御手洗水試験流域の流量・気象観測報告 (2009)
  • Author(s): 篠原慶規・井手淳一郎・藏本康平・小松光・大槻恭一
  • Journal Title: 九州大学演習林報告 90 Pages: 51-87
  • NAID: 120002086739
• [Journal Article] 針葉樹人工林の間伐が年遮断蒸発散量に与える影響-予測モデルの検証- (2009)
  • Author(s): 小松光・久米朋宣・大槻恭一
  • Journal Title: 日本森林学会誌 91 Pages: 94-103
• [Journal Article] 樹液流計測のモウソウチクへの適用-切り竹における吸水量と樹液流量の比較- (2009)
  • Author(s): 小野澤郁佳, 久米朋宣, 小松光, 鶴田健二, 大槻恭一
  • Journal Title: 日本森林学会誌 91 Pages: 366-370
  • NAID: 110007466447
• [Journal Article] Evaluating the contribution of dam reservoirs located upstream of the Tokyo metropolitan area during low flow periods. (2009)
  • Author(s): Komatsu H, Kume T, Otsuki K
  • Journal Title: Bulletin of Kyushu University Forest 90 Pages: 1-11
• [Journal Article] Changes in low flow with the conversion of a coniferous plantation to a broad-leaved forest in a summer precipitation region (2009)
  • Author(s): Komatsu H, Kume T, Otsuki K
  • Journal Title: Japan. Ecohydrology 2 Pages: 164-172
• [Journal Article] 針葉樹人工林の間伐が年遮断蒸発散量に与える影響…予測モデルの検証… (2009)
  • Author(s): 小松光・久米朋宣・大槻恭一
  • Journal Title: 日本森林学会誌 91 Pages: 94-103
  • Peer Reviewed
• [Journal Article] 御手洗水試験流域の流量・気象観測報告 (2009)
  • Author(s): 篠原慶規・井手淳一郎・藏本康平・小松光・大槻恭一
  • Journal Title: Bulletin of Kyushu University Forest 90 Pages: 51-87
  • NAID: 120002086739
  • Peer Reviewed
• [Journal Article] Evaluating the contribution of dam reservoirs located upstream of the Tokyo metropolitan area during low flow periods. (2009)
  • Author(s): Komatsu H, Kume T, Otsuki K.
  • Journal Title: Bulletin of Kyushu University Forest 90 Pages: 1-11
  • Peer Reviewed
• [Journal Article] Changes in low flow with the conversion of a coniferous plantation to a broad-leaved forest in a summer precipitation region, Japan. (2009)
  • Author(s): Komatsu H, Kume T, Otsuki K.
  • Journal Title: Ecohydrology 2 Pages: 164-172
  • Peer Reviewed
• [Journal Article] 樹液流計測のモウソウチクへの適用…切り竹における吸水量と樹液流量の比較… (2009)
  • Author(s): 小野澤郁佳, 久米朋宣, 小松光, 鶴田健二, 大槻恭一
  • Journal Title: 日本森林学会誌 91 Pages: 366-370
  • NAID: 110007466447
  • Peer Reviewed
• [Journal Article] 針葉樹人工林の間伐が年遮断蒸発散量に与える影響-予測モデルの検証- (2009)
  • Author(s): 小松光・久米朋宣・大槻恭一
  • Journal Title: 日本森林学会誌 91(受理)
  • Peer Reviewed
• [Journal Article] Rainfall interception in a moso-bamboo (Phyllostachys pubescens) forest (2009)
  • Author(s): Onozawa Y, Chiwa M, Komatsu H, Otsuki K
  • Journal Title: Journal of Forest Research (受理)
  • NAID: 10029317642
  • Peer Reviewed
• [Journal Article] Evaluating the contribution of dam reservoirs located upstream of the Tokyo metropolitan area during low flow periods (2009)
  • Author(s): Komatsu H, Kume T, Otsuki K
  • Journal Title: Bulletin of Kyushu University Forest (受理)
  • Peer Reviewed
• [Journal Article] Changes in low flow with the conversion of a coniferous plantation to a broad-leaved forest in a summer precipitation region, Japan (2009)
  • Author(s): Komatsu H, Kume T, Otsuki K
  • Journal Title: Ecohydrology (受理)
  • Peer Reviewed
• [Journal Article] Relationship between annual rainfall and interception ratio for forests across Japan. (2008)
  • Author(s): Komatsu H, Shinohara Y, Kume T, Otsuki K
  • Journal Title: Forest Ecology and Management 256 Pages: 1189-1197
• [Journal Article] ヒノキ単木の樹高と蒸散量の関係 (2008)
  • Author(s): 鶴田健二・久米朋宣・小松光・東直子・熊谷朝臣・大槻恭一
  • Journal Title: 水文・水資源学会誌 21 Pages: 414-422
  • NAID: 10024450737
• [Journal Article] Relationship between annual rainfall and interception ratio for forests across Japan (2008)
  • Author(s): Komatsu H, Shinohara Y, Kume T, Otsuki K
  • Journal Title: Forest Ecology and Management 256 Pages: 1189-1197
  • Peer Reviewed