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<p><i>Grewia optiva</i> is a commonly used tree species in the agroforestry systems of Northwestern Himalayan region. <i>Grewia optiva</i> is typically maintained on bunds of the field. <i>Grewia optiva</i> has a significant potential to sequester atmospheric carbon and store it in its biomass as well as soil. However, the variation in its carbon sequestration potential, soil physicochemical properties and leaf nutritional value across different agro-climatic zones is not well understood. Therefore, the present study was carried out in different agro-climatic zones of Himachal Pradesh (India), to assess the variation in <i>Grewia. optiva</i> carbon stock, soil physicochemical properties and leaf nutritional status. The study was carried out in three different agro-climatic zones, Z1 (&lt; 1000&#xa0;m), Z2 (1000–1500&#xa0;m) and Z3 (1500–2000&#xa0;m). Within each agro-climatic zone, four sites (S1, S2, S3 and S4) were randomly selected at different altitudes for the purpose of sample collection. The results revealed that the carbon stock decreased significantly from Z1 to Z3. The soil properties viz. soil moisture content, soil water holding capacity, soil organic carbon, soil nitrogen, phosphorus and potassium increased from Z1 to Z3, whereas, soil bulk density, soil pH, soil EC and soil exchangeable calcium exhibited an opposite trend. The leaf parameters viz. crude protein, ether extract, organic matter and leaf phosphorus increased across the agro-climatic zones, however, leaf fibre fractions, ash contents, and leaf calcium decreased from Z1 to Z3. This investigation highlights the climate change mitigation potential of this species besides different provisioning services it provides and would help to understand its nutritional value as a fodder for livestock in Northwestern Himalayan region.</p>

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Traditional Grewia optiva based agroforestry systems in the northwestern himalayas: a comprehensive study of carbon, soil health, and nutritional value

  • 期刊论文

  • 发表日期：

    2025年11月20日

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  • Ashok Kumar,
  • Rohit Bishist,
  • D. R. Bhardwaj,
  • Rajesh Kaushal,
  • Prem Prakash,
  • Rishav Sharma,
  • Krishan Lal Gautam,
  • Sakshi Tomar

摘要

Grewia optiva is a commonly used tree species in the agroforestry systems of Northwestern Himalayan region. Grewia optiva is typically maintained on bunds of the field. Grewia optiva has a significant potential to sequester atmospheric carbon and store it in its biomass as well as soil. However, the variation in its carbon sequestration potential, soil physicochemical properties and leaf nutritional value across different agro-climatic zones is not well understood. Therefore, the present study was carried out in different agro-climatic zones of Himachal Pradesh (India), to assess the variation in Grewia. optiva carbon stock, soil physicochemical properties and leaf nutritional status. The study was carried out in three different agro-climatic zones, Z1 (< 1000 m), Z2 (1000–1500 m) and Z3 (1500–2000 m). Within each agro-climatic zone, four sites (S1, S2, S3 and S4) were randomly selected at different altitudes for the purpose of sample collection. The results revealed that the carbon stock decreased significantly from Z1 to Z3. The soil properties viz. soil moisture content, soil water holding capacity, soil organic carbon, soil nitrogen, phosphorus and potassium increased from Z1 to Z3, whereas, soil bulk density, soil pH, soil EC and soil exchangeable calcium exhibited an opposite trend. The leaf parameters viz. crude protein, ether extract, organic matter and leaf phosphorus increased across the agro-climatic zones, however, leaf fibre fractions, ash contents, and leaf calcium decreased from Z1 to Z3. This investigation highlights the climate change mitigation potential of this species besides different provisioning services it provides and would help to understand its nutritional value as a fodder for livestock in Northwestern Himalayan region.