干旱区生态环境知识资源中心(Arid): Long-Term Grazing Mediates Soil Organic Carbon Dynamics by Reorienting Enzyme Activities and Elemental Stoichiometry in Semi-arid Tropical Inceptisol

Arid

DOI	10.1007/s42729-021-00742-3
	Long-Term Grazing Mediates Soil Organic Carbon Dynamics by Reorienting Enzyme Activities and Elemental Stoichiometry in Semi-arid Tropical Inceptisol
	Ghosh, Avijit; Mahanta, S. K.; Manna, M. C.; Singh, Sultan; Bhattacharyya, Ranjan; Tyagi, V. C.; Singh, J. B.; Ram, S. N.; Srinivasan, R.; Singh, A. K.; Gupta, Ajita; Govindasamy, Prabhu; Rokde, S. N.
通讯作者	Ghosh, A (corresponding author)，ICAR Indian Grassland & Fodder Res Inst, GSM Div, Jhansi 284003, Uttar Pradesh, India.
来源期刊	JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION
ISSN	0718-9508
EISSN	0718-9516
出版年	2022-01
英文摘要	Long-term grazing by small ruminants diminishes grass and plant covers, alters various biophysical situations and nutrient stoichiometry and modifies soil enzyme activity, and is therefore vital for nutrient cycling in the ecosystem. To apprehend the link between grazing, soil organic carbon (SOC), nutrient cycling enzyme, nutrient stoichiometry and nutrient availability, a grazing study was conducted with 3 different stocking rates (SR1 = 1 adult cattle unit (ACU) ha(-1), SR2 =2ACU ha(-1) and SR3 = 3ACU ha(-1)) in 5 ha of pasture lands and was compared with a control at 5% level of significance under randomized block design. Soil samples were collected from surface and subsurface layers and analysed for SOC and nutrient cycling enzyme, nutrient stoichiometry and their plant availability. In general, pasture productivity under SR1 was significantly higher than SR2 and SR3. SR2 and SR3 significantly depleted SOC (by similar to 20%), nitrogen and sulphur concentration than SR1 and control (P < 0.05) without affecting phosphorus availability. Generally, grazing diminished particulate organic matter-associated C (POMC); however, SR1 significantly increased mineral associated C (MOMC). Grazing significantly altered nutrient stoichiometry in all the soil layers. High grazing pressure significantly reduced dehydrogenase, sulfatase and urease activities over control; however, SR1 boosted activities of phenoloxidase (33%) and peroxidase (32%) over control. Despite that, SR1 recorded similar to 25% lower carbon loss than control; however, SR2 and SR3 had similar carbon loss to control despite having lower SOC in the upper soil layer. Grazing augmented C decay rate (kc) by > 69 and 32% over control in those soil layers, respectively. Grazing with moderate to high stocking rate had a negative impact on SOC, its pools and nutrients. Low stocking rate, i.e., SR1, would sustain SOC and nutrient concentration, and maintain productivity, and hence, could be adopted in the semi-arid tropical regions.
英文关键词	Grazing Nutrient cycling Soil respiration Soil functional diversity Multivariate analysis
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000749084800001
WOS关键词	MATTER ; GRASSLAND ; LIVESTOCK ; QUALITY ; SEQUESTRATION ; CULTIVATION ; MANAGEMENT ; RESPONSES ; FORESTS ; BIOMASS
WOS类目	Plant Sciences ; Environmental Sciences ; Soil Science
WOS研究方向	Plant Sciences ; Environmental Sciences & Ecology ; Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/377064
作者单位	[Ghosh, Avijit; Mahanta, S. K.; Singh, Sultan; Tyagi, V. C.; Singh, J. B.; Ram, S. N.; Srinivasan, R.; Singh, A. K.; Gupta, Ajita; Govindasamy, Prabhu; Rokde, S. N.] ICAR Indian Grassland & Fodder Res Inst, GSM Div, Jhansi 284003, Uttar Pradesh, India; [Mahanta, S. K.] ICAR Indian Agr Res Inst, Gauria Karma 825405, Jharkhand, India; [Manna, M. C.] Rajendra Prasad Cent Agr Univ, Samastipur 848125, India; [Bhattacharyya, Ranjan] ICAR Indian Agr Res Inst, New Delhi 110012, India; [Gupta, Ajita] ICAR Cent Inst Agr Engn, Bhopal 462038, India
推荐引用方式 GB/T 7714	Ghosh, Avijit,Mahanta, S. K.,Manna, M. C.,et al. Long-Term Grazing Mediates Soil Organic Carbon Dynamics by Reorienting Enzyme Activities and Elemental Stoichiometry in Semi-arid Tropical Inceptisol[J],2022.
APA	Ghosh, Avijit.,Mahanta, S. K..,Manna, M. C..,Singh, Sultan.,Bhattacharyya, Ranjan.,...&Rokde, S. N..(2022).Long-Term Grazing Mediates Soil Organic Carbon Dynamics by Reorienting Enzyme Activities and Elemental Stoichiometry in Semi-arid Tropical Inceptisol.JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION.
MLA	Ghosh, Avijit,et al."Long-Term Grazing Mediates Soil Organic Carbon Dynamics by Reorienting Enzyme Activities and Elemental Stoichiometry in Semi-arid Tropical Inceptisol".JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION (2022).