

The Chandratal Lake which is at the core of the sanctuary is a high altitude lake located at about 4300 meters above sea level. The lake has been formed due to blockades of the rock basin by scree and moraine deposits. Glaciers are the main source of inflow into the lake. Chandratal lake is a high-altitude wetland and is identified on the List of Wetlands of International Importance as defined by the Ramsar Convention, for the conservation and sustainable use of wetlands recognizing the fundamental ecological functions of wetlands and their economic, cultural, scientific, and recreational value. The Sanctuary is almost contiguous with the Upper Spiti Landscape, which is the first landscape identified for conservation under Project Snow Leopard. The Sanctuary is crucial part of Central Asian flyway for migratory birds.

Tourism is one of the most important aspects of the Chandratal Wildlife Sanctuary. The area around Chandratal is scenic and is extremely popular as a tourist destination. Over subsequent years, there has been a steady rise in the number of tourists visiting Chandratal . In addition to rising tourist footfall, parts around the Chandratal Wildlife Sanctuary are accessed by migratory herders who hold rights to graze their sheep and goat in these areas, in summer months.

Fauna @ Chandratal Wildlife Sanctuary
The mammalian diversity of the region is not exceptionally large, but several species restricted to Trans-Himalayas occur here. The mammals recorded at Chandra Tal include the Snow leopard (Panthera uncia), Himalayan Ibex (Capra Siberia himalayanus), Stone Marten(Martes foina), Mountain weasel (Mustela altaica), Tibetan Wolf (Canis lupus chance), Red Fox (Vulpes vulpes), Royle’s Pika (Ochotona roylei), Woolly Hare (Lepus oiostolus) and Himalayan Marmot (Marmota himalayana). The avifauna of the area currently stands at 27 species belonging to 15 families. A single species, Curlew Sandpiper (Calidris ferruginea) is classified as Near Threatened (NT) while the rest 26 species are classified as Least Concern (LC) by IUCN.
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Climate
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Geology, terrain, rocks and soil
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Management
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Eco Sensitive Zone for Chandratal WLS
Climate
Chandra Tal occurs on the leeward side of the Pir Panjal branch of the Himalaya that cut off the monsoonal effect from the plains rendering the area dry and cold. Westerly disturbances in winter bring some precipitation in the form of snow, but most areas still receive much lower snowfall compared to the adjacent Lahaul Valley, Kullu and Kinnaur regions. The annual precipitation in Kaza is recorded at c. 200mm annually. The temperature ranges from -40 degree Celsius in winter to c.30 degree Celsius in peak summer, with the minimum temperature remaining sub-zero from September to April in most places. Severe winds occur almost every day and are further reason for the desiccated atmosphere and lack of trees. The overall climate is thus dry and cold with long winter descending from mid-November to March. The ice begins to melt in April heralding the spring with sprouting at lower, south facing slopes that extend to the higher elevations by late May when the peak plant growth season of summer begins. Senescence sets in by late summer leading to the short autumn season.
Geology, terrain, rocks and soil
The Geomorphological set up of the area is highly complex. The terrain has an topography and is traversed by deep valleys and high hill ranges. The terrain can be divided into two major geomorphological units viz. Structural hills and Valley fills. Structural hills are caused by rocks belonging to Pre-Cambrian, Palaeozoic, Mesozoic and Cainozoic eras. The rocks are generally trending in NNE-SSW and NE-SW direction with steep slopes. Valley fills include both fluviatile deposits and moraines. These deposits occur as narrow and elongated strips along the main streams. Glacial deposits are under the influence of running water and have been termed as glacio-fluviatile deposits. Fluviatile terrain is demarcated in the lower reaches of both the Chenab and Spiti river while glacio-fluviatile deposits are confined to the upper reaches of drainage systems. Most of the area in Spiti may be called alpine meadow as the upper stratum of earth and vegetable mould is filled with incompletely decomposed roots of grass and other small plants. Due to glacial and fluvial movements the soil from the upper slopes has been carried down to the lower slopes where the depth of the soil is deeper. The nature of the soil varies little and it may be described as a light sandy loam.
Management
The Chandratal Wildlife Sanctuary is managed by the office of the Divisional Forest Officer (Spiti). A challenge with the management of Chandratal Wildlife Sanctuary is that it is isolated, with no connectivity- both road and communication-for most part of the year. While that secures it through winter when the area remains cut-off, it presents a challenge in summer when there is a need to regulate the use of the area. Management is being carried out as per Management Plan approved for the period 2018-2028.
Eco Sensitive Zone for Chandratal WLS
Draft notification of eco sensitive zone around Chandratal wildlife sanctuary was declared vide MINISTRY OF ENVIRONMENT, FOREST AND CLIMATE CHANGE NOTIFICATION S.O.1978(E). dated 3rd June, 2016 in exercise of the powers conferred by sub-section (1), read with clause (v) and clause (xiv) of sub-section (2) and sub- section (3) of section 3 of the Environment (Protection) Act, 1986 (29 of 1986) published, as required under sub-rule (3) of rule 5 of the Environment (Protection) Rules, 1986, for the information of the public likely to be affected thereby. The final notification of ESZ is under process.

Alpigene bluegrass (Poa alpigena)

Himalayan bistort, fleece flower, or knotweed (Bistorta affinis)

Kobresia (Kobresia royleana)

Narrow Leaf Hygrophila (Hygrophila lancea)

Plantains or fleaworts (Plantago depressa)
Flora @ Chandratal Wildlife Sanctuary
The vegetation of Chandra Tal is classified as ‘alpine scrub’(Champion and Seth, 1968) or ‘dry alpine steppe’ vegetation (Schweinfurt 1957, Puri et al. 1989). Such areas are typified by scattered and open bush-land mainly with herbaceous and shrub species. Plant growth is restricted to a short season (May-August) due to low temperatures during the rest of the year, and available soil moisture is an important limiting factor for plant growth during the growing season. Inter-annual variation in primary production is high and depends upon precipitation and temperature variations. Plants recorded from Chandra Tal WLS include grasses such as Polygonum, Stipa and Leymus, sedges like Cares, herbs such as Potentilla, Leontopodium and Geranium. Bistorta is a type of knotweed found in the sanctuary.
