Rule of organic phosphorous and microbial on phosphorous supply for vegetation in forest soil

森林土壤有机磷和微生物对植被供磷的规律

• 批准号: 17580125
• 负责人: TODA Hiroto
• 金额: $ 2.42万
• 依托单位: Tokyo University of Agriculture and Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17580125/
• 关键词: Available P; Mineralizable organic P; Microbial biomass P; Tropical soil; Karst soil; Hedley method; P supply; Stricken area of volcanic eruption; 可吸態リン; リン供給速度; Hedely法; 年間P吸収量; 火山被害地; N; P比; 熱帯林土壌; Bray II法; 可給体リン; 微生物体リン; 無機態リン; 有機態

Phosphorus fractions by Hedley method and microbial biomass P (MBP) have been investigated in general Japanese forest, tropical forest and karst region forest soils to clarify the characteristics of P and P supply to forest vegetation. The results are summarized as follows.1. Available-P (Ion fraction-P + Bicarb-P) concentrations were remarkable low (under 30 μg P/g), and their values were lower than the annual uptake P by forest vegetation.2. Mineralizable-P is much in general Japanese forest. Phosphorus mineralization rate from organic P is important for P supply to forest vegetation.3. In tropical forest soil with strong weathering in East Kalimantan in Indonesia, total-P amount, available-P ratio and mineralizable-P ratio decreased with decreases of forest vegetation.4. MBP concentrations were greater than labile-P (available plus mineralizable-P) concentrations, so MBP pool is important for P supply to tropical forest.5. In forest soils in a karst region of the upper Yangtze River in China, both available-P and mineralizable-P have strong positive correlation with soil pH and total-C.6. Available-P concentrations by Hedley method have positive correlation with P concentrations by Bray II and Olsen methods. Available-P by Hedley is nearly equal to Bray II-P.7. MBP concentrations were nearly equal as labile-P concentrations, so MBP is index of P supply evaluation in karst region forest.8. In the region of the thick and very hard volcanic ash sedimentation in Miyake Island, Alnus sieboldiana grew a lot with their root nodule because of poor N supply in the ash layer.9. The tropical natural forest and Kanto region forest in Japan, which have rich N supply, had P limit condition compared to N condition.10. We discuss that P supply to root noble is the key to forest recovery in tropical degradation forest and in acid soil on Miyake Island.

通过Hedley法和微生物生物量P（MBP）对日本一般森林、热带森林和喀斯特地区森林土壤进行了调查，以阐明P和P对森林植被的供应特征。结果总结如下： 1． -P（离子分数-P+Bicarb-P）浓度极低（低于30μg P/g），其值低于森林植被年吸收P的值。2．日本森林中可矿化磷含量较高，有机磷矿化率对森林植被的磷供应具有重要意义。3．可矿化磷比率随着森林植被的减少而降低。4．在中国长江上游喀斯特地区土壤中，速效磷和矿化磷与土壤pH和全碳呈强正相关。 6．赫德利法测得的速效磷浓度与布雷法测得的磷浓度呈正相关。 Hedley II法和Olsen法的有效磷与Bray II-P的浓度基本相等。7．MBP是岩溶地区森林磷供应评价的指标。在三宅岛厚而坚硬的火山灰沉积区，由于火山灰层的氮供应不足，西桤木的根瘤大量生长。9．日本的热带天然森林和关东地区森林。 10．我们讨论了对根贵族的磷供应是热带退化森林和三宅岛酸性土壤森林恢复的关键。

项目成果

東カリマンタン熱帯早生樹人工林の養分循環と持続的管理への応用

东加里曼丹热带快材人工林的养分循环及其在可持续管理中的应用

• 发表时间: 2006
• 作者: H.;TODA;K.;HANAOKA;K.;KISHIMOTO;K.;HAIBARA;Y.;KAMETANI;喜多智・戸田浩人・生原喜久雄・Cahyono Agus
• 通讯作者: 喜多智・戸田浩人・生原喜久雄・Cahyono Agus

Soil Microbial Biomass and Organic Matter Mineralization of Mountain -Closured Stands in the Karst Region of Upper Yangtze River

长江上游喀斯特地区山地封闭林土壤微生物量及有机质矿化

• 发表时间: 2006
• 作者: Y.;TIAN;K.;TAKANASHI;T.;ARM;H.;TODA;K.;HAIBARA
• 通讯作者: HAIBARA

長江上流のカルスト地域における封山育林地の微生物バイオマスと無機化活性

长江上游喀斯特地区丰三林微生物量及矿化活性

• 发表时间: 2006
• 作者: S.;KITA;H.;TODA;K.;HAIBARA;C.;AGUS;田野・高梨清美・荒井知朗・戸田浩人・生原喜久雄
• 通讯作者: 田野・高梨清美・荒井知朗・戸田浩人・生原喜久雄

森林土壌(「森林・林業実務必携」森林・林業実務必携編集委員会・編)

森林土壤（《森林与林业实用精要》森林与林业实用精要编委会主编）

• 发表时间: 2007
• 作者: Y.;TIAN;K.;TAKANASHI;T.;ARM;H.;TODA;K.;HAIBARA;戸田浩人
• 通讯作者: 戸田浩人

Mapping and mechanisms of acid buffer effect in of volcanic ash on surface soil in Miyake island

三宅岛表层土壤火山灰酸缓冲作用图谱及机制

• 发表时间: 2007
• 作者: H.;TODA;K.;HANAOKA;K.;KISHIMOTO;K.;HAIBARA;Y.;KAMETANI
• 通讯作者: KAMETANI