The significance of the year

A unit for calculating land area in China. In different places, the northeast area is generally 1 mu, and the northwest area is about 3 mu or 5 mu.

Introduction is as follows:

"Yi" is the second word in Chinese, pronounced as "sh m 4 n", and the unit for calculating land area in China varies from place to place. A Yi nationality in the northeast is generally one hectare (15 mu), and a Yi nationality in the northwest is three to five mu.

These nine places are introduced as follows:

Jiuyangdi is a place name in Shaanxi Province, which was established by 1650 and abolished by 1998. In the early Qing Dynasty (around 1650), it was named because its village had 22.5 mu of flat land (1650 equals 2.5 mu).

Since the naming in the early Qing Dynasty, five households in their original residence moved to Jiupu Immigrant Village on 1998, and the village abandoned its name. 1959 65438+ 10 belongs to the restaurant production brigade of Sancha Management District of Nanxing People's Commune.

1March, 984, a commune was established, which belongs to the old shop village committee of Sancha Township; 1August, 997, a commune was established, which belongs to Jiupu Village Committee of Sancha Town; On July 20 1 1, the commune was revoked and merged into the jurisdiction of Jiupu Village Committee of Liufengguan Town, and its name is still in use today.

The land is introduced as follows:

Land is an important material foundation for human survival and development, and an important guarantee for supporting high-quality development and realizing China's modernization. Land includes the atmosphere, soil and basic geology, hydrology, plants and animals above and below the surface of a specific area of the earth, and also includes various results of past and present human activities in this area.

The important influence of human beings on land use. Geologists in China generally believe that land is a comprehensive concept of physical geography. It is considered that land is a natural complex in a certain area of the surface, including geology, landform, climate, hydrology, soil, vegetation and other natural elements.

Land, as a natural thing, has gradually transformed from the most basic ecological environment factor on which human beings depend for survival and development into human labor objects and labor materials. It is increasingly regarded as a treasure house of natural resources for human life and production activities, and has become the source and support of all production resources and means of production.