干旱区生态环境知识资源中心(Arid): 云南石林喀斯特露石径流输出及其影响因素探究

Arid

	云南石林喀斯特露石径流输出及其影响因素探究
其他题名	A Study of Runoff of Karst Rock Outcrops and Its Influencing Factors in Shilin, Yunnan Province
	王庆贺; 赵志猛; 沈有信
来源期刊	地球学报
ISSN	1006-3021
出版年	2021
卷号	42 期号:3 页码:1006-3021
中文摘要	喀斯特露石具有重要的生态功能,但关于露石承接降水后的石面径流及其影响因子研究仍然很少。本实验选择云南石林的石漠化、人工林、原生林生态系统,布设露石径流收集装置,收集并测量不同降雨事件后的露石石面径流,测定露石承接降水面积和粗糙度。结果表明: (1)在3.92 mm到72.31 mm的降雨范围内,露石承接降雨量与露石径流量间存在极显著的正相关关系。(2)降雨量,林冠覆盖,露石粗糙度均影响露石径流输出。降雨量与露石径流深成显著正相关关系;石漠化生态系统的露石承接降雨量和露石径流输出显著高于两类林地;露石径流输出随露石粗糙度的增加而减小,两者间存在显著的负相关关系。(3)石漠化生态系统的降雨-露石径流转换系数为0.483,显著高于人工林生态系统的0.434和原生林生态系统的0.413,但两类林地的差异性仅在降雨量为小雨时显著。多因素影响下的喀斯特露石径流具有高度异质性,其将对土壤水分、养分异质性与生物多样性的形成产生重要影响。
英文摘要	Karst rock outcrops (ROCs) have important ecological functions; however, few studies have focused on the factors that affect the ROCs runoff output. In this study, ROCs receiving area, roughness and ROCs runoff were measured in three typical karst ecosystems, i.e. rocky desertification, forest plantation, and primary forest ecosystem in Shilin country, Yunnan Province. The results are as follows: (1) There is a highly significant correlation between rainfall received by ROCs and ROCs runoff volume within the rainfall range from 3.92 mm to 72.31 mm. (2) Rainfall, canopy coverage and ROCs roughness affect ROCs runoff output. There is a significant positive correlation between rainfall and ROCs runoff depth. Rainfall received by ROCs and ROCs runoff output in rocky desertification ecosystem are significantly higher than those in other two forest ecosystems. ROCs runoff decreases with the increase of ROCs roughness, and there is a significant negative correlation between them. (3) The conversion coefficient of rainfall to ROCs runoff in rocky desertification ecosystem is 0.483, which is higher than that in plantation and primary forest ecosystems (0.434 and 0.413), but the significant difference in conversion coefficient of rainfall to ROCs runoff in forest plantation ecosystem is only significantly higher than that in primary forest ecosystem when the rainfall is in light degree. Under the influence of multiple factors, karst rock outcrop runoff is highly heterogeneous, which provides strong evidence for the formation of soil moisture heterogeneity, nutrient heterogeneity, and biodiversity in the karst area.
中文关键词	喀斯特 ; 露石径流 ; 林冠覆盖 ; 再分配 ; 影响因素
英文关键词	karst rock outcrop runoff canopy coverage redistribution influencing factors
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Mineralogy
CSCD记录号	CSCD:6988747
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/364968
作者单位	王庆贺, 中国科学院西双版纳热带植物园;;中国科学院大学, 中国科学院热带森林生态学重点实验室;;, 昆明;;, 云南;;北京 650000;;100049, 中国.; 沈有信, 中国科学院西双版纳热带植物园;;中国科学院大学, 中国科学院热带森林生态学重点实验室;;, 昆明;;, 云南;;北京 650000;;100049, 中国.; 赵志猛, 贵州师范学院地理与资源学院, 贵阳, 贵州 550018, 中国.
推荐引用方式 GB/T 7714	王庆贺,赵志猛,沈有信. 云南石林喀斯特露石径流输出及其影响因素探究[J],2021,42(3):1006-3021.
APA	王庆贺,赵志猛,&沈有信.(2021).云南石林喀斯特露石径流输出及其影响因素探究.地球学报,42(3),1006-3021.
MLA	王庆贺,et al."云南石林喀斯特露石径流输出及其影响因素探究".地球学报 42.3(2021):1006-3021.