Desert treasures: a comprehensive review of the diversity, phytochemistry, ethnobotany, and conservation of thar desert flora

The Thar Desert, one of South Asia largest arid ecosystems, is renowned for its rich cultural heritage and ecological diversity. It supports unique indigenous communities whose livelihoods depend on agriculture, animal husbandry, and traditional crafts such as woodworking, wool weaving, and jewelry making. Despite its ecological and medicinal significance, much of the region’s ethnobotanical knowledge remains undocumented. To systematically characterize the distribution, diversity, and medicinal potential of Thar Desert flora, an extensive literature review was conducted using scientific databases including Flora of Pakistan, Global Biodiversity Information Facility (GBIF), and Plants of the World Online (POWO), as well as search engines such as Google Scholar, Scopus, PubMed, Web of Science, and ScienceDirect (1980–2024). A total of 162 plant species belonging to 69 families were documented and evaluated for their phytochemical composition, ethnomedicinal relevance, and conservation status across the Thar Desert. The dominant families—Poaceae (27%), Fabaceae (16%), and Asteraceae (11%)—exhibit remarkable ecological adaptability through halophytic, xerophytic, and nitrogen-fixing traits that stabilize sand dunes, enhance soil fertility, and provide forage for livestock and wildlife. The life-form spectrum is dominated by therophytes (45%), followed by chamaephytes (28%), phanerophytes (10%), hemicryptophytes (9%), cryptophytes (7%), and parasitic species (1%). Alarmingly, 52% of the documented taxa are listed as Data Deficient and 3% as Critically Endangered, underscoring the urgent need for conservation. Phytochemical evidence highlights the abundance of terpenoids, flavonoids, tannins, and alkaloids, compounds of recognized pharmacological value. However, increasing pressures from habitat degradation, overgrazing, and climate change continue to threaten this fragile ecosystem. To safeguard the Thar Desert biological and ethno-medicinal heritage, immediate conservation interventions are recommended. These include afforestation programs, sustainable rangeland and water management, biotechnological propagation of threatened taxa, and comprehensive documentation of indigenous medicinal practices. Strengthening protected areas such as national parks, wildlife sanctuaries, and biosphere reserves, along with implementing community-based conservation and policy integration, will be essential. Such coordinated actions are critical to preserving the Thar Desert biodiversity, promoting sustainable use of its flora, and maintaining its invaluable cultural and medicinal legacy for future generations.