Jigme Singye Wangchuck National Park: Bhutan's Protected Landscape in Trongsa District

Jigme Singye Wangchuck National Park is uniquely known for containing the only old-growth Chir pine forest (Pinus roxburghii) found within Bhutan's protected area system. The park protects the largest and biodiversity-richest temperate forest area in the Himalayas and serves as a critical migratory corridor for numerous species due to its central location within Bhutan. It is the only park in Bhutan where all four big cat species (tiger, leopard, clouded leopard, and snow leopard) have been recorded. The park also supports significant populations of the endangered golden langur and provides crucial winter habitat for black-necked cranes in its buffer zone at Phobjikha Valley.

Jigme Singye Wangchuck National Park was established in 1995 under Bhutan's Forest and Nature Conservation Act, originally designated as Black Mountains National Park. The park was subsequently renamed to honor Jigme Singye Wangchuck, the fourth King of Bhutan, recognizing his contributions to conservation and the nation's environmental policies. Since its gazetting, the park has implemented numerous Integrated Conservation and Development Programmes through various funding agencies, with notable achievements including the establishment of the Nabji-Korphu Community-based Ecotourism initiative, the Adha-Rukha Community Trail, and supply of CGI sheets to economically disadvantaged residents. The park has conducted multiple biological surveys including corridor assessments, biodiversity evaluations, and tiger population studies. Anti-poaching efforts have been intensified through regular patrolling activities. The park's administrative infrastructure has grown to include four park ranges and two deputy ranges, staffed by 38 personnel including technical and non-technical staff.

The park's topography presents remarkable variation across its extent, with the north-central region featuring exceptionally rugged terrain with peaks rising to nearly 5,000 meters, while the southern areas are comparatively less steep and more accessible. The geological foundation consists largely of Pre-Cambrian and early Paleozoic quartzite and gneiss, with areas of sedimentary limestone, dolomite, sandstone, and shales. The soils are generally clay loam with good permeability and moderate moisture retention. The landscape transitions through distinct vegetation zones from permanent ice atop Durshingla peak, through conifer and broad-leaved forests, to temperate and subtropical forests at lower elevations. The high mountains in the central regions serve as important watershed areas for streams and rivers that become the headwaters and tributaries of the Mangde Chhu River. The Nika Chhu joins the Mangde Chhu from the north, and numerous perennial streams originate from snow-fed alpine lakes in the Black Mountain area.

Jigme Singye Wangchuck National Park represents the best example of mid-Himalayan ecosystems in the Eastern Himalaya, containing several ecological biomes ranging from subtropical forests at lower altitudes to alpine meadows at the highest elevations. The park includes portions of six distinct ecoregions: Himalayan subtropical broadleaf forests, Himalayan subtropical pine forests, Eastern Himalayan broadleaf forests (both warm and cool temperate variants), Eastern Himalayan subalpine conifer forests, and Eastern Himalayan alpine shrub and meadows. The wide altitudinal range, highly dissected terrain, and representation of multiple ecoregions and two zoogeographical realms create exceptional biodiversity with diverse flora and fauna species distributed across various ecosystems and habitats. The park protects the largest and most biodiversity-rich temperate forest area in the entire Himalayas. The Constitution of Bhutan mandates maintaining at least 60% of the country under forest cover, and this park contributes significantly to that national commitment while supporting Bhutan's carbon neutrality goals.

The park supports a remarkable mammalian fauna mixing Palearctic and Indo-Malayan species, with 39 mammals confirmed through intensive camera trapping conducted between 2013 and 2015 for the Tiger Revalidation Survey. The mammal population includes several Schedule I protected species: Bengal tiger, clouded leopard, leopard, leopard cat, red panda, Himalayan black bear, gaur, Asian elephant, serow, musk deer, Chinese pangolin, and the endangered golden langur. The park is the only area in Bhutan where all four big cat species have been recorded. Avian diversity includes 270 recorded bird species, with eight being globally threatened. The park serves as critical habitat for the critically endangered white-bellied heron and supports important populations of rufous-necked hornbill and great hornbill. The buffer zone at Phobjikha Valley provides crucial winter habitat for migrating black-necked cranes. The park also supports 42 species of herpetofauna and 359 species of butterflies recorded in recent surveys.

Jigme Singye Wangchuck National Park plays a central role in one of the largest, most diverse protected area complexes in Asia, linking with Manas Tiger Reserve and Royal Manas National Park in the south and Jigme Dorji National Park and Wangchuck Centennial National Park in the north. The park's conservation mission is to conserve and manage natural biodiversity in harmony with community values and aspirations. Conservation goals include protecting specific ecosystems and animal and plant communities while allowing natural processes to continue with minimal human influence, protecting cultural and religious sites, and contributing to the socio-economic development of park residents through sustainable resource use. The park has implemented community-based ecotourism programs that provide alternative livelihoods while incentivizing conservation. Ongoing research and monitoring programs, wildlife management initiatives, and anti-poaching activities support the park's conservation objectives.

Over 5,000 people reside within the multiple-use zones of Jigme Singye Wangchuck National Park, representing diverse communities including the Oleps in Rukha village, the Monpa communities in Jangbi, Wangling, and Phrumzur villages, and the Reti community. These communities depend on the park's natural resources for their livelihoods through agriculture, livestock rearing, and collection of non-wood forest products. The park serves as seasonal pastureland for migratory cattle and yak herders from Chumey in Bumthang, who travel to low-altitude areas during winter and to alpine meadows during summer. The Nabji-Korphu area holds historical significance as the route believed to have been taken by Guru Rinpoche when visiting Bhutan in the 8th century, and the Nabji Lhakhang temple represents an important religious site.

Jigme Singye Wangchuck National Park stands out as Bhutan's ecological heartland, protecting the only old-growth Chir pine forest in the country's protected area network and the largest temperate forest in the Himalayas. The park's extraordinary altitudinal gradient supports six distinct ecoregions and provides habitat for all four of Bhutan's big cat species. The Nabji-Korphu Community-Based Nature Tourism program offers visitors a unique opportunity to experience remote rural Bhutanese communities while contributing to conservation. The park's position as a central ecological corridor linking northern and southern protected areas makes it indispensable for maintaining Himalayan biodiversity connectivity.

The park's wide elevation range creates varying conditions throughout the year. The Nabji-Korphu Trek operates as a winter trek from mid-October to end of March, with elevations ranging from 1,000 to 1,700 meters, offering comfortable temperatures for hiking. The monsoon season from June to September brings most of the annual rainfall, creating lush green landscapes but challenging trail conditions. The high-elevation northern areas experience cold temperate to alpine conditions, while the southern subtropical zones remain warmer year-round. The southwest monsoon creates localized rainfall patterns across the park's complex terrain.