干旱区生态环境知识资源中心(Arid): Assessment of vegetation, soil nutrient dynamics and heavy metals in the Prosopis juliflora invaded lands at semi-arid regions of Southern India

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DOI	10.1016/j.catena.2022.106374
	Assessment of vegetation, soil nutrient dynamics and heavy metals in the Prosopis juliflora invaded lands at semi-arid regions of Southern India
	Mohanraj, R.; Prasath, R. V. Akil; Rajasekaran, A.
通讯作者	Mohanraj, R
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2022
卷号	216
英文摘要	Prosopis juliflora is one among the dominant invasive plant species widely distributed in arid and semi-arid regions of the world. The invasion inflicts varying degrees of ecological implications, albeit certain socio-economic benefits are being derived by the local community. In Southern India, the vast semi-arid plains lying east of the Western Ghats mountain range, has ideally favored extensive invasion of Pjuliflora. In last three decades, the invasion had spread to the pasture and arable lands that are lying disconnected from the mainstream irrigation system. Therefore, in the context of worsening food security, ecological imbalance, increasing soil degradation and the climate change, the prospects of converting the Pjuliflora invaded lands to silivicultural/agricultural activity has been envisaged as a viable alternative. In this scenario, present study is an imperative attempt to understand the coexisting vegetation, soil nutrient profile and heavy metal concentrations in the Pjuliflora invaded lands at Tiruchirappalli and Pudukkottai regions of Southern India. Composite soil samples were collected from 60 sites (spread across 4800 km(2) including urban-rural gradient) at the depths 0 - 10, 10 - 20, and 20-30 cm. The influence of Pjuliflora stand density, litter fall, species diversity, soil texture on the soil physico-chemical properties including soil pH, electrical conductivity (EC), available macro nutrients (N, P and K), organic carbon and heavy metals [Fe, Cu, Cd, Cr, Ni, and Pb] were investigated. The results revealed considerable enrichment of macronutrients in the invaded lands, in contrast to non-invaded lands (p < 0.001***). Of the observed attributes, step wise regression indicated stand density and litter fall as prominent factors (R = 0.7903 and 0.6479 respectively) augmenting soil macro nutrients. In the case of heavy metals, observations along the urban-rural gradient indicated comparatively lower concentrations of heavy metals in the Pjuliflora invaded lands of urban areas, hinting the possible of bio-sorption capacity of P.juliflora. Overall, the results infer an optimistic note for potential conversion of the Pjuliflora invaded lands to silivicultural maneuvers, prioritizing the native flora.
英文关键词	Prosopis juliflora Invasion Loss of native vegetation Invasive taxa and its implication Soil Macro-nutrient Dynamics Heavy Metal Amelioration
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000829817900004
WOS关键词	ORGANIC-MATTER ; INVASION ; IMPACTS ; BIOMASS ; GROWTH ; DC
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392107
推荐引用方式 GB/T 7714	Mohanraj, R.,Prasath, R. V. Akil,Rajasekaran, A.. Assessment of vegetation, soil nutrient dynamics and heavy metals in the Prosopis juliflora invaded lands at semi-arid regions of Southern India[J],2022,216.
APA	Mohanraj, R.,Prasath, R. V. Akil,&Rajasekaran, A..(2022).Assessment of vegetation, soil nutrient dynamics and heavy metals in the Prosopis juliflora invaded lands at semi-arid regions of Southern India.CATENA,216.
MLA	Mohanraj, R.,et al."Assessment of vegetation, soil nutrient dynamics and heavy metals in the Prosopis juliflora invaded lands at semi-arid regions of Southern India".CATENA 216(2022).