CHANGES OF NATURAL ENVIRONMENT IN NEPAL HIMALAYA

尼泊尔喜马拉雅山自然环境的变化

• 批准号: 05045021
• 负责人: TOKUOKA Takao
• 金额: $ 3.84万
• 依托单位: SHIMANE UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for international Scientific Research
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-05045021/
• 关键词: NEPAL HIMALAYA; SIWALIK GROUP; MOLLUSCAN FOSSIL; LAKE DEPOSIT; AQUATIC PLANT; アルゴン・アルゴル年代測定; ヒマラヤの地質; ヒマラヤの植生; シワリク槽; 湖沼推積物; 洪水推積物; IGBP; 水生植物; ネパールヒマラヤ; ヒマラヤ花崗岩; カトマンズ; 第四紀地殻変動; 地球環境変化

Climatic changes during the last 1000 years recorded in the sediment of the lakes around Pokhara : Seven sediment cores up to 60 to 80 cm deep, using "convenient light corer mad by Geologic Survey of Japan, were taken from Lakes Phewa, Begnas, and Rupa and echo-sounding survey using SH-20 machine was done in these three lakes. Cored sediments were X-ray radiographed by computerized tomography, made description and measured water content C/N ratio, etc. Weak laminations which might be correlated to annual precipitation and several distinct event sediments, namely flood sediments during the historical age in Nepal Himalaya have been clarified.Siwalik sedimentation, stratigraphy and paleontology : Geomapping surveys were performed at the area between Butwal and Narayangarh, West Central Nepal. Systematic study of the Mio-Pliocene freshwater molluscan fossil fauna of the Siwalik Group has revealed many new species and eight species Lamellidens arungensis, Indonaia narayani, Parreysia binaiensis etc. have been newly described.Lesser Himalayan Metamorphics an Ar/Ar age determination : Lesser Himalayan rocks ditributed in the north of Kathmandu and Pokhara have been mapped and suitable samples for age determination were obtained systematically.The aquatic plant in the above three lakes and tree species characters of ever-green subtropical forest in Kathmandu valley were also studied.

在博卡拉附近的湖泊沉积物中记录的最后1000年中的气候变化：七个沉积物核心深度为60至80厘米，使用“日本地质调查的便利式旋转仪式，来自Phewa，begnas，begnas和Rupa和Recho and Echo-20的调查，使用SH-20机器进行了sh-20仪表仪，在这些驾驶中进行了X-RADIS摄影，X-Rake syography是X-Rake syography。含量C/N的比率等可能与年度降水和几个不同的事件沉积物相关的薄弱层次，即在尼泊尔喜马拉雅山的历史时代泛滥的沉积物。Siwalik沉积，地层和古生物学：在Butwal和NarayArayanger之间进行了地理位置调查。 Siwalik集团的Molluscan化石Fauna揭示了许多新物种和八种种类lamellidens arungensis，Indonaia narayani，binaiensis等。刚描述了毫无描述的喜马拉雅变态。还研究了上述三个湖泊和加德满都山谷中绿色亚热带森林的树种特征的水生植物。

项目成果

TAKASU,A.ARITA,K.AND DALLMEYER,R.D.: "Ar/Ar age constraints on the Lesser Himalayan tectonics in central Nepal Himaalaya" Jour.Metamorphic Geology. (in preparation).

TAKASU,A.ARITA,K. 和 DALLMEYER,R.D.：“Ar/Ar 年龄对尼泊尔喜马拉雅中部小喜马拉雅构造的限制”Jour.变质地质学。

Takasu,A: "Process of continent-continent collision,Tectonothermal evolution of Himalayan gneiss,Nepal" (投稿予定).

Takasu, A：“大陆与大陆碰撞的过程，尼泊尔喜马拉雅片麻岩的构造热演化”（待提交）。

KOIKE,F.AND SHRESTHA,K.K.: "Tree species characters of ever-green subtropical forest" Ecoprint. (in preparation).

KOIKE,F.AND SHRESTHA,K.K.：“常绿亚热带森林的树种特征”Ecoprint。

コトリア・中山勝博ほか: "インド,ラムナガ-ルのシワクリ層の岩相,古地磁気,生層序の研究" Current Science. (発表予定).

Kotria、Katsuhiro Nakayama 等人：“印度拉姆讷格尔 Siwakli 地层的岩性、古地磁学和生物地层学研究”《当代科学》（待出版）。

徳岡隆夫ほか: "ネパール,中央部のチュリア(シワリク)層-総括-" ヒマラヤシンポジウム論文集(島根大学). (発表予定).

Takao Tokuoka 等人：“尼泊尔中部的 Churia (Siwalik) 地层 - 摘要 -”喜马拉雅研讨会论文集（岛根大学）（已安排演示）。