วันอังคารที่ 4 สิงหาคม พ.ศ. 2569

Prachuap Kiri Khan Flora

 Prachuap Kiri Khan

Prachuap Khiri Khan (Thaiประจวบคีรีขันธ์pronounced [prā.tɕùap kʰīː.rīː kʰǎn]) is one of the western provinces (changwat) of Thailand. It is in the northern part of the Malay Peninsula, some 240 km (149 mi) south of Bangkok. Neighboring provinces include Phetchaburi to the north and Chumphon to the south. To the west, it borders Tanintharyi Region of Myanmar.

Prachuap Khiri Khan covers an area totaling 6,367 square kilometers (2,458 sq mi).The province is on the Kra Isthmus, the narrow land bridge connecting the Malay Peninsula with mainland Asia. The province has one of the narrowest parts of Thailand, just 11 km (6.8 mi) from the Gulf of Thailandto the border with Myanmar in the Tenasserim Hills.Geographically, Prachuap Khiri Khan is a moderate plain with elevations varying from sea level to 1,200 m (3,900 ft). The maximum 

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elevations are found in the northeastern and central west regions, which make up approximately 30 percent of the province. The total forest area is 2,485 km2(959 sq mi) or 38.7 percent of provincial area.

The long coast of the Gulf of Thailand has many sandy beaches. One of the best known, Hua Hin, has been a popular resort town since King Prajadhipok (Rama VII) built a summer palace there. From the coast the land quickly rises into the Tenasserim Hills, the mountain chain that forms the border with Myanmar. Due to its narrow watershed, the rivers in the province are all small. The only one of significance is the Pranburi River in the north. Among the smaller rivers is the Khlong Kui.


Phraya Nakhon Cave in Khao Sam Roi Yot National Park

Archaeology

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The discovery of 3,000 years old cave paintings was announced by archaeologists from the Fine Arts Office in a cave at the Khao Sam Roi Yod National Park in May 2020. Some of the depicted pictures are still visible and clear, while some paintings were damaged by limestone etching. According to archeologist Kannika Premjai, paintings describe humanlike figures with accessories on their bodies, hunting scenes with bow and arrow. Moreover, there is also an animal figure seems to be serow (a goat-like mammal found regionally) found among the drawings.



Prachuap Khiri Khan has a dubbed as "Mueang Sam Ao", which meaning "city of three bays", refers to Ao Noi, Ao Prachup, and Ao Manao all three bays are lined up and are located in the area of Mueang Prachuap Khiri Khan District.

National Park

Khao Sam Roi Yot National Park was established in 1966 to protect Thailand's largest freshwater marshes. The park contains some mangrove forests and mudflats. Most of the marshes were converted into shrimp farms, despite being in a national park. There are a total of six national parks, make up region 3 (Phetchaburi branch) of Thailand's protected areas.(Visitors in fiscal year 2024)

Kaeng Krachan National Park2,915 km2 (1,125 sq mi) (139,674)
Kui Buri National Park   969 km2 (374 sq mi)   (30,199)
Namtok Huai Yang National Park    161 km2 (62 sq mi)   (12,751)
Khao Sam Roi Yot National Park    98 km2 (38 sq mi) (155,660)
Hat Wanakon National Park    38 km2 (15 sq mi)   (41,341)
Ao Siam National Park    13 km2 (5.0 sq mi)   (19,457)


Gesneriaceae
Khao Sam Roi Yot


กระเช้านกกระจิบ

Several notable Gesneriaceae species are found in Prachuap Khiri Khan province, including Ornithoboea barbantheraMicrochirita involucrata, and specific limestone-dwelling variants of Paraboea. These plants typically grow as lithophytes on karst limestone formations in areas like Khao Sam Roi Yot National Park. 

Key Gesneriaceae Taxa in Prachuap Khiri Khan

  • Ornithoboea barbanthera
    • B.L.Burtt/      
    แก่นขมิ้นพระยานคร : An endemic lithophyte found growing on limestone in Sam Roi Yot at around 100 meters elevation. 
  • Microchirita involucrata: Recorded in the Khao Sam Roi Yot National Park limestone hills and coastal surroundings. 
  • Dorcoceras collections: Historical regional collections (such as Kerr 13506 from Khao Sai) place unusual or localized Dorcoceras taxa here.(Dorcoceras in Prachuap Khiri Khan is represented by a single historical botanical collection (Kerr 13506 at the Natural History Museum, London) from Kao Sai, which may belong to Dorcoceras wallichiiDorcoceras brunneum, or an undescribed variant)
  • Paraboea harroviana var. harroviana ชาฤๅษีเล็ก เนียมฤๅษี ฝอยหิน หนาดหิน Kong Wan [12°029N 99°559E]


Provincial government

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The province is divided into eight districts (amphoes). The districts are further divided into 48 subdistricts (tambons) and 388 villages (mubans).


  1. Mueang Prachuap Khiri Khan
  2. Kui Buri
  3. Thap Sakae
  4. Bang Saphan
  1. Bang Saphan Noi
  2. Pran Buri
  3. Hua Hin
  4. Sam Roi Yot


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