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25

Four large protected areas in China have been set aside

specifically to safeguard Tibetan Plateau wildlife spe-

cies, including chiru and wild yak and their habitat, and

other reserves are proposed, Those established to date

include the Chang Tang Nature Reserve and Xianza

Nature Reserve (334,000 km

2

and 40,000 km

2

, Tibet

Autonomous Region), Kekexili (aka “Kokoxili” or “Hoh

Xil”) National Reserve (45,000 km

2

, Qinghai Province),

and Arjin Shan (or “Altun Tagh”) Nature Reserve

(45,000 km

2

, Xinjiang Autonomous Region). These

reserves already have positive effects and the popula-

tion decline has apparently been halted or even slightly

reversed in some areas. Other threats to the chiru and

other plateau ungulates include fencing and grazing en-

croachment by pastoralists, which interfere with chiru

migration and foraging and the expanding exploitation

of extractive industries that increase immigration and

settlement into these areas. Thus, even if large-scale

poaching is controlled, the effects of livestock increases

and husbandry modernization, as in rangeland ecosys-

tems elsewhere, are likely to be the primary long-term

threats to the high plains ungulates such as chiru (Fox

et al. 2004). Unfortunately, the calving grounds of

some large Chiru populations still remain unprotected,

and include areas threatened by road development and

mining. While protected areas generally appear to have

good effects on species conservation, law enforcement

remains weak in many Chinese reserves. This is a com-

mon problem throughout most of Asia, but very typical

of large parts of Tibet.

As fragmentation and habitat destruction associated

with road development and intensified land use along

infrastructure corridors continue to play a primary role

in relation to biodiversity loss, the relative importance

of different pressures for biodiversity may change.

While infrastructure will largely increase the acces-

sibility of humans, pests, and invasive species to the

few remaining hotspots, climate change and pollution

may further reduce the resilience of biodiversity to

cope with these or new emerging pressures. Control

of piecemeal development and its associated regime of

exploitation will therefore be essential for conservation

of biodiversity.

Alpine and desert steppe on the

western Tibetan plateau, typical

habitat for threatened or endan-

gered species such as Tibetan

antelope, wild yak, Tibetan

argali sheep, Tibetan wild ass,

brown bear and, in the more

rugged areas, snow leopard.