干旱区生态环境知识资源中心(Arid): 湘西石漠化地区植物多样性与土壤因子的耦合关系

Arid

	湘西石漠化地区植物多样性与土壤因子的耦合关系
其他题名	Coupling relationships between plant diversity and soil characteristics in rocky desertification areas of western Hunan
	刘子玥; 王祎宸; 骆丕昭; 何功秀
来源期刊	森林与环境学报
ISSN	2096-0018
出版年	2021
卷号	41 期号:5 页码:471-477
中文摘要	为揭示湘西石漠化地区植物多样性特征及其影响因素,利用灰色关联度分析方法,探究不同程度石漠化(轻度、中度和重度)地区的植物物种多样性与土壤因子间的耦合关系。结果表明:湘西石漠化地区植物物种组成相对简单,仅有59科90属101种;在同等石漠化程度环境下,Margalef指数、Shannon-Winner指数和Simpson指数均在海拔1 000 m以上地区达到峰值,且不同海拔地区植物多样性指数随石漠化程度的变化趋势有所不同;植物多样性与土壤因子间存在较强的耦合关系,其中田间持水量、pH值和脲酶活性3个土壤因子对植物多样性的影响最为显著;湘西石漠化地区植物多样性与土壤因子间的耦合度在0.75~ 0.89之间,以良好协调为主,植物与土壤的发展较协调同步。因此,土壤改良是湘西石漠化地区植被生态系统恢复重建的关键。
英文摘要	To determine the characteristics of plant diversity in the rocky desertification areas of western Hunan and to establish the soil factors affecting this diversity,we examined the coupling relationships between plant species diversity and soil characteristics in areas with different degrees of desertification(slight,medium,and severe)using the grey correlation analysis method.The results revealed that the composition of plant species in these rocky desertification areas is relatively simple,with only 101 species in 90 genera and 59 families being identified.Within areas characterized by the same degree of rocky desertification,Margalef,Shannon-Winner,and Simpson index values were all maximal in areas at 1 000 m in altitude,and we detected differences in the change trends of plant diversity indices at different altitudes in areas with differing extents of rocky desertification.We also established that there are strong coupling relationships between plant species diversity and soil characteristics,among which field capacity,urease activity,and pH value were found to have the most significant influences on plant diversity.Values for coupling factors between plant diversity and soil characteristics in the assessed rocky desertification areas were found to be between 0.75 and 0.89,with a higher degree of coordination being detected in areas in which the development of plants and soil characteristic is more coordinated and synchronized.Accordingly,our findings indicate that soil improvement is the key factor for the effective restoration and restructuring of the vegetation ecosystem in the rocky desertification areas of western Hunan.
中文关键词	喀斯特 ; 石漠化 ; 植物多样性 ; 土壤因子 ; 灰色关联 ; 耦合协调
英文关键词	karst rocky desertification plant diversity soil characteristics grey relationship coupling coordination
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Plant Sciences
CSCD记录号	CSCD:7058311
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/377815
作者单位	刘子玥, 中南林业科技大学林学院, 长沙, 湖南 410004, 中国.; 王祎宸, 中南林业科技大学林学院, 长沙, 湖南 410004, 中国.; 骆丕昭, 中南林业科技大学林学院, 长沙, 湖南 410004, 中国.; 何功秀, 中南林业科技大学林学院, 长沙, 湖南 410004, 中国.
推荐引用方式 GB/T 7714	刘子玥,王祎宸,骆丕昭,等. 湘西石漠化地区植物多样性与土壤因子的耦合关系[J],2021,41(5):471-477.
APA	刘子玥,王祎宸,骆丕昭,&何功秀.(2021).湘西石漠化地区植物多样性与土壤因子的耦合关系.森林与环境学报,41(5),471-477.
MLA	刘子玥,et al."湘西石漠化地区植物多样性与土壤因子的耦合关系".森林与环境学报 41.5(2021):471-477.