Langa

A river in the northeastern part of Hebei Province, China. It originates at the northern foot of the Damaqun Mountains on the border between Hebei Province and Inner Mongolia Autonomous Region, flows southeast through Inner Mongolia, and collects water from mountainous areas such as Yanshan, Qilaotushan, and Yinshan before flowing into the Bohai Bay. The upper reaches are called the Lightning River, and its main tributaries include the Xiaolan River, Yixun River, Wulie River, and Qinglong River. It is 877 kilometers long and has a drainage area of ​​44,600 square kilometers. The lower reaches form a vast coastal plain and delta, but the seaward areas are covered with salt soil and marshes, and many areas are undeveloped. The Daheiting Dam and Panjiakou Dam were built in Qianxi County in the middle reaches, and are used for agricultural water, etc.

[Motohide Akiyama]

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

中国、河北省北東部の河川。河北省と内モンゴル自治区との境界の大馬群山北麓(ほくろく)に発し、内モンゴルを経由して南東流し、燕(えん)山、七老図(しちろうと)山、陰山などの山地の水を集めて渤海(ぼっかい)湾に流入する。上流は閃電(せんでん)河と称し、主要な支流に小灤河、伊遜(いそん)河、武烈河、清竜河などがある。全長877キロメートル。流域面積4万4600平方キロメートル。下流部には広大な海岸平野とデルタを形成するが、瀕海(ひんかい)地帯は塩土や沼沢地が分布し、未開発の部分も多い。中流の遷西(せんせい)県には大黒汀(だいこくてい)ダム、潘家口(はんかこう)ダムが設けられ、農業用水などに利用されている。

［秋山元秀］

出典　小学館　日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について　情報 | 凡例