干旱区生态环境知识资源中心(Arid): 贵州喀斯特石漠化地区植物多样性与土壤理化性质

Arid

	贵州喀斯特石漠化地区植物多样性与土壤理化性质
其他题名	Plant diversity and soil physical-chemical properties in karst rocky desertification ecosystem of Guizhou, China
	盛茂银 1; 熊康宁1 ; 崔高仰 2; 刘洋 2
来源期刊	生态学报
ISSN	1000-0933
出版年	2015
卷号	35 期号:2 页码:432-448
中文摘要	以贵州典型喀斯特石漠化生态系统环境为研究对象,运用野外取样调查和实验室检测分析方法,研究不同等级石漠化环境植物多样性和土壤理化性质特征及其相关性;运用空间替代时间方法,探讨石漠化演替过程中植物多样性和土壤理化性质的响应,旨在为贵州乃至整个中国西南喀斯特森林生态保护和石漠化生态系统恢复重建提供理论支撑。结果表明:1)石漠化环境植物群路组成简单,物种丰富度也很低,且随着石漠化程度增加,植被物种组成呈递减趋势;不同等级石漠化环境植物多样性具有显著差异,均匀度指数变化与石漠化等级演替明显耦合,显示了随石漠化程度增加而减小的变化趋势。2)不同等级石漠化环境土壤理化性质存在显著差异,随着石漠化程度增加,土壤理化性质显示了先退化后改善的响应过程。土壤有机质、氮素、毛管持水量、容重和孔隙度与植物多样性具有明显的相关性,在改善土壤理化性质和促进植物多样性恢复方面起着关键作用。3)主成分分析表明,土壤有机质、氮素、钾素、持水状况、孔隙度和植物多样性均匀度指数等是基于土壤理化性质和植物多样性评价石漠化程度的关键指标。基于上述结果,进一步阐述了石漠化演替过程中植物多样性和土壤理化性质的变化规律和响应机制。研究结果对我国西南喀斯特森林生态保护和石漠化生态系统恢复重建具有一定的理论意义和实践指导价值。
英文摘要	Karst rocky desertification has been an important ecological issue hindering the economy and society development of South China Karst region,and the control of rocky desertification has been clearly listed in the national projects of economy and society development.. But there are highly short of plant diversity and soil science researches in karst rocky desertification ecosystem,and the successions of plant diversity and soil physical-chemical properties are still unclear in the process of rocky desertification, all which hardly hinders the control of rocky desertification well work. Based on these problems, in this study, firstly, three typical rocky desertification regions, that is, Yachi, Hongfenghu,and Huajiang of Guizhou Province, representing three different typical karst landforms of plateau mountain, plateau basin, and plateau gorge, respectively, were selected as experiment areas,and 45 sample plots with area of 20 m * 20 m, respectively, were set up for the 5 typical degrees of rocky desertification surrounding, that is, nil, potential, low, middle,and high, in these three experiment areas. Then, the plant diversity and soil physical-chemical properties were surveyed and analyzed by methods of ecological survey, chemical determination, and mathematical statistics. Results show that 1) the vegetation is very simple with extreme low richness in rocky desertification surroundings,and with the increased degree of rocky desertification,the plant diversity appear remarkable change,for example,species is more few,importance value of dominant species is more high, and structure of plant community and ecological niche is more confusion. 2) There are significance differences of soil physical-chemical properties between different degrees of rocky desertification,and there is remarkable correlation between soil physical-chemical properties and plant diversity in rocky desertification ecosystem. 3) Principal component analysis show that the evenness index of plant diversity together with its correlative soil physical-chemical factors can represent the degradation degree of karst ecosystem. Results have important values in the protection of karst forest ecosystem and the control of rocky desertification.
中文关键词	喀斯特 ; 石漠化 ; 植物多样性 ; 土壤理化性质 ; 演变规律
英文关键词	Karst rocky desertification plant diversity soil physical-chemical properties succession
语种	中文
国家	中国
收录类别	CSCD
WOS类目	BIOLOGY
WOS研究方向	Life Sciences & Biomedicine - Other Topics
CSCD记录号	CSCD:5346248
来源机构	贵州师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/233138
作者单位	1.贵州师范大学中国南方喀斯特研究院, 贵州省喀斯特山地生态环境国家重点实验室培育基地, 贵阳, 贵州 550001, 中国; 2.贵州师范大学中国南方喀斯特研究院, 贵阳, 贵州 550001, 中国
推荐引用方式 GB/T 7714	盛茂银,熊康宁,崔高仰,等. 贵州喀斯特石漠化地区植物多样性与土壤理化性质[J]. 贵州师范大学,2015,35(2):432-448.
APA	盛茂银,熊康宁,崔高仰,&刘洋.(2015).贵州喀斯特石漠化地区植物多样性与土壤理化性质.生态学报,35(2),432-448.
MLA	盛茂银,et al."贵州喀斯特石漠化地区植物多样性与土壤理化性质".生态学报 35.2(2015):432-448.