Landscape and land use effects on soil resources in a Himalayan watershed

Mandal, Debashis; Singh, Ratan; Dhyani, S. K.; Dhyani, B. L.

doi:10.1016/j.catena.2010.03.004

Cited by 25 publications

(15 citation statements)

References 25 publications

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“…(Martinez, Hancock, & Kalma, 2010). Accelerated soil erosion results in two to three times less SOC concentration compared to uneroded soils in some undulating and hilly regions of India (Lal, 2005b;Mandal, Singh, Dhyani, & Dhyani, 2010). Some researchers (e.g., Xiao et al, 2018) suggest that at eroded sites SOC would maintain an equilibrium due to the incorporation of newly assimilated OC unless the soil is eroded beyond tolerance limits.…”

Section: Soil Organic Carbon Concentration and Carbon Enrichment Ramentioning

confidence: 99%

The magnitude of erosion‐induced carbon (C) flux and C‐sequestration potential of eroded lands in India

Mandal

Giri

Srivastava

2020

European J Soil Science

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Globally, soil erosion transports a significant amount of carbon (C), but the magnitude of erosion‐associated loss of soil organic carbon (SOC) from India is poorly quantified. The present study quantified the C flux induced by accelerated erosion for different states of India where soil erosion is the most critical form of land degradation. The lateral transport of eroded C was estimated for individual Indian states using spatially referenced data for soil erosion rates that were assessed using the universal soil loss equation (USLE) applied to the information about 1649 soil association units and their SOC inventories across the country. The results indicated that soil erosion varies widely across the states. The states lying in the north region (Uttar Pradesh, Uttarakhand, Jammu & Kashmir and Himachal Pradesh) and all states of the north‐eastern Himalayan region, Peninsular plateau (Madhya Pradesh, Chattisgarh and others) and Peninsular India (Orissa, Andhra Pradesh, Tamil Nadu, and Karnataka) showed more soil loss due to water erosion. At the national level in India, erosion transported about 4.87 Pg of soil and 115.36 Tg of C every year, which consequently emits about 34.61 Tg of C to the atmosphere. Among the states in India, Madhya Pradesh had the highest value of erosion‐associated C loss (20.33 Tg C yr−1), followed by Chhattisgarh, Maharashtra, Uttar Pradesh and Andhra Pradesh with losses of 9.98, 9.18, 9.11 and 8.70 Tg C yr−1, respectively. The possibility of C sequestration in various degraded lands was also explored. The results revealed that between 19 and 27 Tg C yr−1 could be sequestered in soils by adopting achievable technological options in erosion‐affected areas of India, offering the potential to reduce approximately 24.5% of the total greenhouse gas emissions from the agricultural soils of India (94 Tg C). Highlights Eroded carbon is an important factor in biogeochemical carbon (C) cycle in India. A new database on lateral transport of C is created for India. Quantity of C lost due to water erosion in India is 115.36 Tg yr−1. Erosion control will help to reduce C emission by 19–27 Tg C yr−1 from India.

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Section: Soil Organic Carbon Concentration and Carbon Enrichment Ramentioning

confidence: 99%

The magnitude of erosion‐induced carbon (C) flux and C‐sequestration potential of eroded lands in India

Mandal

Giri

Srivastava

2020

European J Soil Science

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“…The process of land degradation in croplands and grasslands has been acPublished by Copernicus Publications on behalf of the European Geosciences Union. 218 D. Mandal et al: Reversing land degradation through grasses celerated mainly by inappropriate land use (Nearing et al, 2005;Mandal et al, 2010) and mismanagement (Kagabo et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

“…Strategies to reverse land degradation are critical since soil is a non-renewable resource (Mandal and Sharda, 2011b;Mandal et al, 2010). Soil erosion rates more than tolerance values are considered unacceptable (Mandal and Sharda, 2013), which leads to irreversible land degradation and need to be reduced through appropriate soil conservation measures (SCMs) (Biswas et al, 2015) The physical structures to check soil erosion are proven effective but are cost-intensive.…”

Section: Introductionmentioning

confidence: 99%

Reversing land degradation through grasses: a systematic meta-analysis in the Indian tropics

et al. 2017

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Abstract. Although intensive agriculture is necessary to sustain the world's growing population, accelerated soil erosion contributes to a decrease in the environmental health of ecosystems at local, regional and global scales. Reversing the process of land degradation using vegetative measures is of utmost importance in such ecosystems. The present study critically analyzes the effect of grasses in reversing the process of land degradation using a systematic review. The collected information was segregated under three different land use and land management situations. Meta-analysis was applied to test the hypothesis that the use of grasses reduces runoff and soil erosion. The effect of grasses was deduced for grass strip and in combination with physical structures. Similarly, the effects of grasses were analyzed in degraded pasture lands. The overall result of the meta-analysis showed that infiltration capacity increased approximately 2-fold after planting grasses across the slopes in agricultural fields. Grazing land management through a cut-and-carry system increased conservation efficiencies by 42 and 63 % with respect to reduction in runoff and erosion, respectively. Considering the comprehensive performance index (CPI), it has been observed that hybrid Napier (Pennisetum purpureum) and sambuta (Saccharum munja) grass seem to posses the most desirable attributes as an effective grass barrier for the western Himalayas and Eastern Ghats, while natural grass (Dichanthium annulatum) and broom grass (Thysanolaena maxima) are found to be most promising grass species for the Konkan region of the Western Ghats and the northeastern Himalayan region, respectively. In addition to these benefits, it was also observed that soil carbon loss can be reduced by 83 % with the use of grasses. Overall, efficacy for erosion control of various grasses was more than 60 %; hence, their selection should be based on the production potential of these grasses under given edaphic and agro-ecological conditions. The present analysis also indicated that grass must be used as a vegetative strip to maintain soil quality in sloppy arable areas (8.5 Mha) of Indian hilly regions. Similarly, due attention should be paid for establishing grasses in 3 Mha of degraded pasture lands and 3.5 Mha of shifting cultivation areas in India to reverse the land degradation.

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“…Our findings and those of many other researchers agree with this statement. Mandal et al (2010) studied Himalayan Entisols and Inceptisols with clay contents between 106 and 172 g kg -1 and found that soil management strongly influenced the soil quality indicators. Marzaioli et al (2010) studied sandy loam and loam sandy Mediterranean soils (clay content 54 -171 g kg -1 ) and also observed that any differences in soil quality could be attributed to differences in land use.…”

Section: Source Of Variation Bulk Density Porositymentioning

confidence: 99%

The effect of intrinsic soil properties on soil quality assessments

Samuel‐Rosa¹,

Dalmolin²,

Miguel³

et al. 2013

Rev. Bras. Ciênc. Solo

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SUMMARYThe assessment of soil quality is based on indicators and indices derived from soil properties. However, intrinsic soil properties may interfere with other soil properties that vary under different land uses and are used to calculate the indices. The aim of this study was to assess the extent to which intrinsic soil properties (clay and iron oxide contents) explain variable soil properties (sum of bases, potential acidity, organic carbon, total porosity, and bulk density) under different land uses (native forest, no-tillage and conventional agriculture) on small family farms in Southern Brazil. The results showed that the five properties evaluated can be included in soil quality assessments and are not influenced by the clay and iron oxide contents. It was concluded that for little weathered 1:1 and 2:1 phyllosilicate rich-soils, if the difference between the maximum and the minimum clay content under the different land uses is less than about 200 g kg -1 and the iron oxide content less than about 15 g kg -1 , the physico-chemical soil properties in the surface layer are determined mostly by the land use.Index terms: soil quality, family farms, ANCOVA, spurious correlation. RESUMO: EFEITO DE PROPRIEDADES INTRÍNSECAS DO SOLO EM AVALIAÇÕES DE QUALIDADE DO SOLO

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Landscape and land use effects on soil resources in a Himalayan watershed

Cited by 25 publications

References 25 publications

The magnitude of erosion‐induced carbon (C) flux and C‐sequestration potential of eroded lands in India

The magnitude of erosion‐induced carbon (C) flux and C‐sequestration potential of eroded lands in India

Reversing land degradation through grasses: a systematic meta-analysis in the Indian tropics

The effect of intrinsic soil properties on soil quality assessments

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