Organic carbon stocks in mountain grassland soils of northwestern Kashmir Himalaya: spatial distribution and effects of altitude, plant diversity and land use

Dad, Javaid M.

doi:10.1080/17583004.2019.1568137

Cited by 12 publications

(7 citation statements)

References 46 publications

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“…High mountain soils are known to store a large amount of SOM, mainly caused by low mean annual temperature hampering microbial decomposition [ 3 ]. Across mountainous areas of the world, SOM stocks range widely from 31 to 310 Mg C ha −1 [ 4 , 5 , 6 , 7 , 8 , 9 ]. Importantly, most of these SOM stocks (30–65%) are concentrated in the topsoil (0–10 cm) layer [ 7 , 8 ] with relatively high accumulation of plant residues and slow decomposition rates [ 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

“…Across mountainous areas of the world, SOM stocks range widely from 31 to 310 Mg C ha −1 [ 4 , 5 , 6 , 7 , 8 , 9 ]. Importantly, most of these SOM stocks (30–65%) are concentrated in the topsoil (0–10 cm) layer [ 7 , 8 ] with relatively high accumulation of plant residues and slow decomposition rates [ 10 , 11 ]. Therefore, global warming could accelerate the decomposition rate in C-rich mountain soils and stimulate C losses as greenhouse gas CO 2 .…”

Section: Introductionmentioning

confidence: 99%

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Temperature Sensitivity of Topsoil Organic Matter Decomposition Does Not Depend on Vegetation Types in Mountains

Komarova

Ivashchenko

Sushko

et al. 2022

Plants

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Rising air temperatures caused by global warming affects microbial decomposition rate of soil organic matter (SOM). The temperature sensitivity of SOM decomposition (Q10) may depend on SOM quality determined by vegetation type. In this study, we selected a long transect (3.6 km) across the five ecosystems and short transects (0.1 km) from grazed and ungrazed meadows to forests in the Northwest Caucasus to consider different patterns in Q10 changes at shift of the vegetation belts. It is hypothesized that Q10 will increase along altitudinal gradient in line with recalcitrance of SOM according to kinetics-based theory. The indicators of SOM quality (BR:C, basal soil respiration rate per unit of soil organic carbon; MBC:C, ratio of microbial biomass carbon to soil organic carbon; soil C:N ratio) were used for checking the hypothesis. It was shown that Q10 did not differ across vegetation types within long and short transects, regardless differences in projective cover (14–99%) and vegetation species richness (6–12 units per plot). However, Q10 value differed between the long and short transects by almost two times (on average 2.4 vs. 1.4). Such a difference was explained by environmental characteristics linked with terrain position (slope steepness, microclimate, and land forms). The Q10 changes across studied slopes were driven by BR:C for meadows (R2 = 0.64; negative relationship) and pH value for forests (R2 = 0.80; positive relationship). Thus, proxy of SOM quality explained Q10 variability only across mountain meadows, whereas for forests, soil acidity was the main driver of microbial activity.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Temperature Sensitivity of Topsoil Organic Matter Decomposition Does Not Depend on Vegetation Types in Mountains

Komarova

Ivashchenko

Sushko

et al. 2022

Plants

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“…This could be explained by the fact that Kashmiri citizens are now more conscious and aware of the risks on grassland biomass and the disequilibrium of the environmental balance associated with overgrazing. On the other hand, climatic contrasts, species heterogeneity, and anthropogenic disturbances were reported to affect the biomass yield in the lesser Himalayan foothills, and northwestern regions of Kashmir Valley [ 22 , 23 ]. This simulates a possible inclusion of non-native species to the studied sites, resulting in the variation of soil organic carbon (SOC), and thus a variation in biomass yields [ 24 ].…”

Section: Discussionmentioning

confidence: 99%

Biomass and Leaf Nutrition Contents of Selected Grass and Legume Species in High Altitude Rangelands of Kashmir Himalaya Valley (Jammu & Kashmir), India

Mugloo

Khanday

Dar

et al. 2023

Plants

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The yield and nutritional profile of grass and legume species in Kashmir Valley’s rangelands are scantly reported. The study area in this paper included three types of sites (grazed, protected, and seed-sown) divided into three circles: northern, central, and southern Kashmir. From each circle, three districts and three villages per district were selected. Most sites showed higher aboveground biomass (AGB) compared to belowground biomass (BGB), which showed low to moderate effects on biomass. The comparison between northern, central, and southern Kashmir regions revealed that AGB (86.74, 78.62, and 75.22 t. ha−1), BGB (52.04, 51.16, and 50.99 t. ha−1), and total biomass yield (138.78, 129.78, and 126.21 t. ha−1) were the highest in central Kashmir region, followed by southern and northern Kashmir regions, respectively. More precisely, AGB and total biomass yield recorded the highest values in the protected sites of the central Kashmir region, whereas BGB scored the highest value in the protected sites of southern Kashmir region. The maximum yield (12.5 t. ha−1) recorded among prominent grasses was attributed to orchard grass, while the highest crude fiber and crude protein contents (34.2% and 10.4%, respectively), were observed for Agrostis grass. The maximum yield and crude fiber content (25.4 t. ha−1 and 22.7%, respectively), among prominent legumes were recorded for red clover. The highest crude protein content (33.2%) was attributed to white clover. Those findings concluded the successful management of Kashmir rangelands in protected sites, resulting in high biomass yields along with the considerable nutritional value of grasses and legumes.

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“…forests are estimated to store roughly between 378 to 564, 249 to 295, and 113 to 125Pg C, respectively, of the existing carbon (Pan et al, 2011). The Kyoto Protocol, recognizes forestry as a sink measure under the Clean Development Mechanism (CDM) but only in form of afforestation and reforestation (Arora and Chaudhry, 2014). India, being a signatory member to the Kyoto Protocol, carried out numerous studies in the country (Salunkhe et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Trend of studies on carbon sequestration dynamics in the Himalaya hotspot region: A review

Tolangay

Moktan

2020

JANS

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The present communication deals with the carbon dynamics in the Himalaya hotspot region. The Himalaya, a mountain range shared by Pakistan, India, Nepal, Bhutan and Myanmar, is one of the biologically richest regions in the world that play an important role as source and sink in global carbon cycle. The purpose of this paper was to review and provide available studies related to carbon sequestration in the Himalayas. The carbon in forest is stored in five different pools viz. above-ground biomass, below-ground biomass, litter, deadwood and soil organic carbon. Estimates of biomass, carbon stock and soil organic carbon contents by almost all forest types including agroforestry systems and plantations in the Himalaya hotspot have been documented in this communication. The net rate of carbon sequestrated by forest was reported to be 2.4 ±0.4 Pg C yr-1 on a global scale. The Indian Himalayan Region constitutes about 5.4 billion tonnes of C and sequesters about 65 million tonnes of C yr-1. We analysed more than 135 peer-reviewed journal articles related to biomass and carbon sequestration. The review identifies that the studies estimated 3697.05, 3898.10 and 4235.05 tonnes carbon per hectare for Western, Central and Eastern Himalayan region respectively. The research on the biomass/carbon estimation received attention as early as 1980s, but increased gradually after 2001. These findings would contribute to policy-makers with useful information for mitigation of CO2 emissions.

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Organic carbon stocks in mountain grassland soils of northwestern Kashmir Himalaya: spatial distribution and effects of altitude, plant diversity and land use

Cited by 12 publications

References 46 publications

Temperature Sensitivity of Topsoil Organic Matter Decomposition Does Not Depend on Vegetation Types in Mountains

Temperature Sensitivity of Topsoil Organic Matter Decomposition Does Not Depend on Vegetation Types in Mountains

Biomass and Leaf Nutrition Contents of Selected Grass and Legume Species in High Altitude Rangelands of Kashmir Himalaya Valley (Jammu & Kashmir), India

Trend of studies on carbon sequestration dynamics in the Himalaya hotspot region: A review

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