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DOI	10.1016/j.catena.2020.105127
	Do moisture conservation practices influence stability of soil organic carbon and structure?
	Ghosh, Avijit; Singh, Amit K.; Kumar, Sunil; Manna, Madhab C.; Jha, Pramod; Bhattacharyya, Ranjan; Sannagoudar, Manjanagouda S.; Singh, Ramesh; Chaudhari, Suresh K.; Kumar, R., V
通讯作者	Ghosh, A (corresponding author), Indian Grassland & Fodder Res Inst, GSM Div, Jhansi 284003, Uttar Pradesh, India.
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2021
卷号	199
英文摘要	As soil erosion is a major threat for global food security, soil and water conservation (SWC) structures are essential in degraded lands of the tropics facing water scarcity. However, some fundamental questions regarding the impact of SWC measures on soil aggregate stability, organic carbon (SOC) pools within bulk soils and aggregates, and biological activities remain unexplored. A 11-year study was conducted, involving a combination of tree (Emblica officinalis) + grass (Cenchrus ciliaris) + legume (Stylosanthes seabrana), comparing in-situ soil water storage measures, staggered contour trenches (SWC1), continuous contour trenches (SWC2), stone mulch (SWC3), and vegetative barriers (SWC4), to a control (SWC0). We calculated three novel indices: biological activity index (BAI), oxidative stability (OXS), and normalized soil stability index (NSSI). SWC1 and SWC2 reduced soil erosion by similar to 63% and 51% compared to SWC0. Labile C concentration improved by similar to 47, 31, and 15% for SWC1, SWC2, and SWC4 compared to SWCO. SWC1 and SWC2 had 50 and 33% greater recalcitrant C than SWC0, respectively, in the top layer. Considerably higher amount of aggregate associated C was observed with SWC1 and SWC2 than with SWC0. NSSI values of SWC1 and SWC2 were similar to 1.92- and 1.87-fold higher than that of SWC0 in the upper layer. BAI was improved by 1.34-2.65 times under SWC conditions compared to the control. For macroaggregates, OXS of C for SWC1 and SWC2 were similar to 12% higher than that for SWC0 at the surface. Overall, fruit and pasture yield under SWC1 were similar to 51 and 82% higher than SWC0, respectively. System water productivity was similar to 61% higher for SWC1 compared with SWC0. Therefore, staggered contour trenching or continuous contour trenching could be recommended for improving soil structural stability and SOC storage and for reducing soil erosion in degraded lands of semi-arid, dry, tropical regions.
英文关键词	Soil moisture Normalised soil stability index Oxidative stability Glomalin concentration Biological activity index Land degradation
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000608022600034
WOS关键词	LONG-TERM FERTILIZATION ; MATTER ; FRACTIONS ; SEQUESTRATION ; EROSION ; AGGREGATE ; DYNAMICS ; PROTEIN
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
来源机构	International Crops Research Institute for the Semi-Arid Tropics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/347777
作者单位	[Ghosh, Avijit; Singh, Amit K.; Kumar, Sunil; Sannagoudar, Manjanagouda S.; Kumar, R., V] ICAR Indian Grassland & Fodder Res Inst, Jhansi 284003, Uttar Pradesh, India; [Manna, Madhab C.; Jha, Pramod] ICAR Indian Inst Soil Sci, Bhopal 462038, India; [Bhattacharyya, Ranjan] ICAR Indian Agr Res Inst, New Delhi 110012, India; [Singh, Ramesh] Int Crops Res Inst Semi Arid Trop, Patancheru 502324, Andhra Pradesh, India; [Chaudhari, Suresh K.] Indian Council Agr Res, New Delhi 110012, India
推荐引用方式 GB/T 7714	Ghosh, Avijit,Singh, Amit K.,Kumar, Sunil,et al. Do moisture conservation practices influence stability of soil organic carbon and structure?[J]. International Crops Research Institute for the Semi-Arid Tropics,2021,199.
APA	Ghosh, Avijit.,Singh, Amit K..,Kumar, Sunil.,Manna, Madhab C..,Jha, Pramod.,...&Kumar, R., V.(2021).Do moisture conservation practices influence stability of soil organic carbon and structure?.CATENA,199.
MLA	Ghosh, Avijit,et al."Do moisture conservation practices influence stability of soil organic carbon and structure?".CATENA 199(2021).