Sa Pa pronunciation (help·info) or Sapa (Westernized spelling) is a frontier town and district in the Lào Cai province in northwest Vietnam. It is one of the main market towns in the area, where many ethnic minority groups such as H'mong, Dao and Tay live.

Geography

Sa Pa District is located in Lao Cai Province, north-west Vietnam, and 350 km north-west of Hanoi, close to the border with China. The Hoang Lien Son range of mountains dominates the district, which is at the eastern extremity of the Himalayas. This range includes Vietnam's highest mountain, Fan si pan, at a height of 3142m above sea level. The town of Sa Pa lies at an altitude of about 1600 m. The climate is moderate and rainy in summer (May—August), and foggy and cold with occasional snowfalls in winter.

View on the mountains from downtown Sapa

Sa Pa is a quiet mountain town and home to a great diversity of ethnic minority peoples. The total population of 36,000 consists mostly of minority groups. Besides the Kinh (Viet) people (15%) there are mainly 5 ethnic groups in Sapa: Hmong 52%, Dao 25%, Tay 5%, Giay 2% and a small number of Xa Pho. Approximately 7,000 live in Sapa, the other 36,000 being scattered in small communes throughout the district.

Most of the ethnic minority people work their land on sloping terraces since the vast majority of the land is mountainous. Their staple foods are rice and corn. Rice, by its very nature of being a labour intensive crop, makes the daily fight for survival paramount. The unique climate in Sapa has a major influence on the ethnic minorities who live in the area. With sub-tropical summers, temperate winters and 160 days of mist annually, the influence on agricultural yields and health related issues are significant.

The minority people can only yield one crop of rice annually, which leads to food shortfalls in many communes at specific times. This shortage of food contributes to malnutrition and other related health problems. The climatic conditions also contribute to many health issues including coughs, colds, and bronchial and respiratory problems that are commonplace throughout the community.

The geographical location of the area makes it a truly unique place for many interesting plants and animals, allowing it to support many inhabitants. Many very rare or even endemic species have been recorded in the region.

The scenery of the Sa Pa region in large part reflects the relationship between the minority people and nature. This is seen especially in the paddy fields carpeting the rolling lower slopes of the Hoang Lien Mountains. The impressive physical landscape which underlies this has resulted from the work of the elements over thousands of years, wearing away the underlying rock. On a clear day, the imposing peak of Fan Si Pan comes into view. The last major peak in the Himalayan chain, Fan Si Pan offers a real challenge to even the keenest walker, the opportunity of staggering views, and a rare glimpse of some of the last remaining primary rain forest in Vietnam.

Geology, climate and human activity have combined to produce a range of very distinct habitats around Sa Pa. Especially important is Sa Pa’s geographic position, at the convergence of the worlds 14 “biomes” (distinct biographic areas), producing an assemblage of plant and animal species unique in the world.

Geology

The geology of Hoang Lien Nature Reserve includes metamorphosed sediments and a granitic intrusion. The metamorphosed sediments strike from northwest to southeast along the Muong Hoa valley. On the northeastern side of the valley is a craggy ridge of marble and metamorphosed carbonate rocks that exhibit a karst style of weathering. These formations are currently being quarried for road building. The valley floor is characterised by schist and, to a lesser extent, gneiss. The granitic intrusion extends from the Muong Hoa River to the summit ridge of Fansipan and beyond. Due to the high humidity and rainfall in the area, chemical weathering is prevalent. This is reflected in the clay nature of the soil.

Hydrology

Sa Pa lake

Hoang Lien Nature Reserve is drained by the Muong Hoa and Ta Trung Ho rivers, which feed the Nam Po River and, finally, the Song Hong (Red) river. The forest has an essential role in water catchment protection, particularly the forest at high altitudes, which is frequently covered in cloud. Water condenses on the vegetation and falls as ‘occult’ precipitation. Occult precipitation makes a major contribution to stream-flow during the dry season when rainfall is low.