Xishuangbanna National Nature Reserve lies
in the counties of Jinghong, Mengla, and Menghai, south of Yunnan Province. The
Reserve covers a total area of 241,000 hectares, among it natural forest covers
an area of 197,800 hectares and accounts for 81.8% of the total. Established in
1958, Xishuangbanna National Nature Reserve was accepted by UNESCO as a member
of the International Man and Biosphere Reserve Network in 1993. Its main targets
for protection are the tropical forest ecosystem, including marvelous virgin
forests, tropical rain forest and monsoon rain forest as well as precious flora
and fauna.
Climate
The climate of Xishaungbanna is tropical
monsoon damp climate. It lies in the northern part of the tropical zone and
south of Hengduan Mountains. It is higher in the northwest and lower in the
southeast and surrounded by continuous mountains. Because the surrounding of
mountains and plateaus with an elevation of over 1,000 meters, it is not easy
for cold air from the north to flow in; however, at the same time, it is helpful
for tropical moisture from oceans to enter the region. Owing to its topography,
Xishuangbanna has both maritime and continental climatic features, and is
extremely rich in both thermal and hydrological resources. The annual average
temperature is over 21¡æ
and it yearly precipitation averages 1,000-2,000 millimeters. A year here is
divided into two seasons namely dry and moist.
Physical Features
The Reserve has continuous hills, broad
basins surrounded by hills, crisscrossed rivers and evergreen scenery. The
Reserve is traversed by the Lancang River water system.
Plants
Xishuangbanna lies at the northern limit of
the tropical rain forests of Southeast Asia. There are two vegetation types of
valley and hill rain forests. The abundant flora comprises more than 5,000
species of higher and seed plants, which accounts for 12% of the total in China.
And among them, there are 58 species of rare and endangered plants under the
state protection, accounting for 15% of the total. Plants of different
geological ages and species blend to form wonderful plant communities peculiar
to Xishuangbanna. Giant lianas also meander through
the forest and epiphytic orchids cling to tree trunks bursting in a cascade of
delicate, transparent flowers. The plants here are vertically distributed and
occupy their respective spaces. Here grow ancient
tropical plants such as Chinese parashoreas (Parashorea chinensis) and sogo
Cycas which have been bypassed in the evolutionary process.
In addition, there are over 800 species of medicinal plants and other plants
with special use. Xishuangbanna, with its luxuriant forests and varied
plant-life, occupy a unique place in China's biota.
Animals
Here is also a safe, congenial habitat with
ample food resources for a myriad of animals. The Reserve boasts 539 species of
terrestrial vertebrate which accounts for 25% of the total in China, 429 species
of birds, 36% of the total, 47 species of amphibians, 68 species of reptiles and
100 species of fish, 40% of the total as well. Among them, the Asiatic elephant
(Elephas maximus), Indo-Chinese tiger (Panthera tigris), gaur (Bos frontalis),
white-cheeked gibbon (Hylobates concolor leucogenys), binturong (Arctictic
binturong), chevrotain (Tragulus javanicus), brown-headed hornbill (Aceros
nipalensis), peacock pheasant (Polypleotron bicalcaratum) and green peafowl
(Paro muticus) are listed with top rank protection importance in China and some
of them are even classified as world protection species.