Ecological studies on the self fertilization effects of trees.

树木自体受精效应的生态学研究。

• 批准号: 63440012
• 负责人: IWATSUBO Goro
• 金额: $ 6.4万
• 依托单位: KYOTO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (A)
• 财政年份: 1988
• 资助国家: 日本
• 起止时间: 1988 至 1989
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-63440012/
• 关键词: self fertilization of trees; inner cycling; nutrients; nitrogen; decomposition of litter; Cryptomeria japonica; Chamaecyparis obtusa; mineralization; スギ人工林; ヒノキ人工林; チッソの無機化; 土壌呼吸; リタ-量; 土壌条件; スギとヒノキの人工林; 落葉落枝量; 養分動態; 物質循環; 炭素; 落葉の分解

Primary productivities of forests depend upon the nutrient cycling between trees and environments. In these nutrients cycles, the litter fall is an important flux of nutrients into the soil, from where trees absorb the nutrients. The nutrient cycle by litter fall has been termed "the self fertilization effects of trees".Nutrient cyclings were studied in two plantation forests, i.e. Chamaecyparis obtuse and Cryptomeria japonica plantations in Kyoto and the following results were obtained through the study period. 1. Litter fall supplies were measured in the two plantations growing on two different soil conditions, over a two year period. 2. Seasonal changes in soil respiration rates were measured in the two plantations over a two year period and the total annual carbon dioxide evolution was similar between the two plantations. 3. Seasonal changes in nutrient contents of needles were measured over a two year period in the two plantations. 4. Decomposition processes of needle litter were followed over a two year period in the two plantations, and nutrients release largely depended upon the soil nutritional conditions. 5. Seasonal changes in nitrogen mineralization processes were followed over a two year period and the mineralization potentials were significantly higher in the Crypromeria forests.

森林的初级生产力取决于树木和环境之间的养分循环。在这些养分循环中，凋落物是养分进入土壤的重要流量，树木从土壤中吸收养分。本文对京都的日本柳杉（Cryptomeria japonica）人工林和日本山慈菇人工林的凋落物养分循环进行了研究。1.凋落物供应量的测量，在两个种植园生长在两种不同的土壤条件下，在两年的时间。2.土壤呼吸速率的季节性变化，在两个人工林在两年的时间内进行了测量，两个人工林之间的总的年度二氧化碳演变是相似的。3.在两个人工林针叶养分含量的季节变化进行了测定，在两年的时间内。4.对两种人工林针叶凋落物的分解过程进行了为期两年的跟踪研究，结果表明，针叶凋落物的养分释放在很大程度上取决于土壤的营养状况。5.氮矿化过程的季节变化，随后在两年的时间内，矿化潜力显着较高的Crypromeria森林。

项目成果

青黄史子: "オオシラベの枝葉の年齢による養分濃度変化" 日本林学会関西支部39回大会講演集. 39. 127-130 (1988)

青木富美子：“日本林业协会枝叶年龄引起的养分浓度变化”日本林业协会关西分会第39届年会论文集39. 127-130（1988）。

Hiroshi,Takeda 5year Study of pine needle litter decomposition in relation to mass loss and faunal abundance: "Pedobiologia" 32. 1988. (221-226)

Hiroshi, Takeda 松针凋落物分解与质量损失和动物丰度相关的 5 年研究：“Pedobiologia”32. 1988. (221-226)

村上雅志: 京都大学・農学部・演習林報告(発表予定). (1989)

村上正史：京都大学农学院，研究森林报告（即将出版）（1989 年）。

Fumiko Aoki and Shigenobu Tamai: "Variations of nutrients contents among different age needles and twigs of Abies." Proceedings of the 39th. Forestry Society, Kansai Branch. 127-130, 1988.

Fumiko Aoki 和 Shigenobu Tamai：“不同年龄的冷杉针叶和嫩枝的营养成分含量变化。”

Tatsushi Shimono, Hiroshi Takeda, Goro Iwatsubo, and Toshio Tsutsumi: "Seasonal changes in soil respiration rates from the floor of Chamaecyparis obtusa and Cryptomeria japonica plantations." Bulletin of Kyoto Univ. Forests, 61, 46-59, 1989.

Tatsushi Shimono、Hiroshi Takeda、Goro Iwatsubo 和 Toshio Tsutsumi：“日本扁柏和日本柳杉种植园地面土壤呼吸速率的季节性变化。”