干旱区生态环境知识资源中心(Arid): Effect of tree canopy on herbaceous vegetation and soil characteristics in semi-arid forests of the Aravalli hills

Arid

DOI	10.1080/15324982.2021.1953634
	Effect of tree canopy on herbaceous vegetation and soil characteristics in semi-arid forests of the Aravalli hills
	Garg, Shriya; Joshi, Rajendra Kr; Garkoti, Satish Chandra
通讯作者	Garkoti, SC (corresponding author), Jawaharlal Nehru Univ, Sch Environm Sci, New Delhi, India.
来源期刊	ARID LAND RESEARCH AND MANAGEMENT
ISSN	1532-4982
EISSN	1532-4990
出版年	2021-08
英文摘要	Herbaceous vegetation is of great ecological importance and responds quickly to environmental changes. The present study was aimed to understand the variation in herbaceous species composition, biomass and soil physico-chemical properties in the naturally formed gap and the understory of semi-arid forests in the Aravalli hills. Four permanent plots consisting of the gap as well as the understory were established. To study herbs phytosociological attributes and biomass, 10 quadrats of 0.5 x 0.5 m size were laid in each plot. For soil physico-chemical properties, 5 soil samples were collected randomly at 0-10 cm depth from each plot. Relationships among biodiversity indices, herbaceous biomass and soil physico-chemical properties were determined using Redundancy Analysis (RDA) and correlation analysis. Across the sites, Poaceae was the dominant family. All species showed a contagious distribution pattern. In the understory, Importance Value Index (IVI) was the recorded highest for Oplismenus burmannii, ranging from 138 to 230.5 while in the gap, it was the highest for Achyranthes aspera (56.15) followed by Eragrostis ciliaris (53.1). Both sites included, herbaceous community biomass in the gap ranging from 700 to 900 g m(-2) while in the understory it ranged from 30 to 70 g m(-2). Cenchrus ciliaris (597.97 g m(-2)) and Chrysopogon sp. (391.2 g m(-2)) contributed a major proportion of herbaceous community biomass in the gap. Oplismenus burmannii (52.2 g m(-2)), Dipteracanthus prostratus (16.6 g m(-2)) and Cynodon dactylon (9.6 g m(-2)) contributed a major proportion of herbaceous community biomass in the understory. The understory soil had significantly (p < 0.05) higher soil moisture (%), electrical conductivity (EC), soil organic carbon (SOC) and soil total nitrogen (TN) compared to the gap. Even though canopy had positive effects on soil physico-chemical properties, it has negatively influenced herbaceous species composition, diversity and biomass, due to significant reduction in solar radiation reaching the ground.
英文关键词	Biomass canopy species richness biodiversity soil physico-chemical properties
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000684117300001
WOS关键词	LEAF-AREA INDEX ; SPECIES-DIVERSITY ; PRIMARY PRODUCTIVITY ; TROPICAL FOREST ; BIOMASS ; LIGHT ; COMMUNITY ; RAJASTHAN ; RICHNESS ; SIZE
WOS类目	Environmental Sciences ; Soil Science
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/367567
作者单位	[Garg, Shriya; Joshi, Rajendra Kr; Garkoti, Satish Chandra] Jawaharlal Nehru Univ, Sch Environm Sci, New Delhi, India
推荐引用方式 GB/T 7714	Garg, Shriya,Joshi, Rajendra Kr,Garkoti, Satish Chandra. Effect of tree canopy on herbaceous vegetation and soil characteristics in semi-arid forests of the Aravalli hills[J],2021.
APA	Garg, Shriya,Joshi, Rajendra Kr,&Garkoti, Satish Chandra.(2021).Effect of tree canopy on herbaceous vegetation and soil characteristics in semi-arid forests of the Aravalli hills.ARID LAND RESEARCH AND MANAGEMENT.
MLA	Garg, Shriya,et al."Effect of tree canopy on herbaceous vegetation and soil characteristics in semi-arid forests of the Aravalli hills".ARID LAND RESEARCH AND MANAGEMENT (2021).