干旱区生态环境知识资源中心(Arid): 丹江口库区喀斯特坡地不同植被覆盖类型的产流产沙特征

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	丹江口库区喀斯特坡地不同植被覆盖类型的产流产沙特征
其他题名	Characteristics of runoff and sediment yield from different vegetation types in the karst region of Danjiangkou Reservoir area
	周梦玲; 郭建斌; 周金星; 王磊; 陈霄; 闫伟鹏
来源期刊	中国水土保持科学
ISSN	2096-2673
出版年	2020
卷号	18 期号:2
中文摘要	为减少丹江口库区喀斯特坡地的水土流失及恢复脆弱生态环境,探索最优植被恢复模式,观测油桐疏林地(Ⅰ)、马尾松林地(Ⅱ)、坡耕地(Ⅲ)、荒草地(Ⅳ) 、白刺花灌草地(Ⅴ) 5种不同植被覆盖类型的2018年的标准径流小区产流产沙情况,分析产流产沙特征对降雨及植被特征的响应规律。结果表明:1)该地区短历时、高强度的降雨事件易引起产流产沙,长历时、低强度的降雨事件不易引起产流产沙。2)产流产沙量与降雨量(P)、最大10 min降雨强度(I_(10))、最大30 min降雨强度(I_(30))、最大60 min降雨强度(I_(60))等降雨因子均呈线性正相关。产流产沙量与P相关性显著(P <0.05),但与降雨历时(T)、平均降雨强度(I)的相关性不显著(P >0.05)。产沙量与产流量呈显著线性正相关(P <0.05)。3)累积产流量呈Ⅳ >Ⅰ、Ⅴ >Ⅱ >Ⅲ;累积产沙量呈Ⅲ >Ⅰ、Ⅴ >Ⅳ >Ⅱ,其中除Ⅰ与Ⅴ间无显著差异(P >0.05)外,其他植被类型间的累积产流产沙量差异显著(P <0.05)。综上表明植被类型Ⅰ、Ⅲ、Ⅳ的水土流失情况严重,亟待治理,Ⅱ有明显的水土保持效果。
英文摘要	[Background]The purpose of this study is to quantify the response of runoff and sediment yield to the variation of rainfall and vegetation in the karst region of Danjiangkou Reservoir area,and to determine the optimal vegetation types for achieving the goals of soil erosion reduction and fragile environment restoration.[Methods]In 2018,a continuous monitoring was carried out for the runoff and sediment yield in standard runoff plots of 5 vegetation types (sparse forest of Vernicia fordii (Hemsl.) Airy Shaw (Ⅰ),forest of Pinus massoniana Lamb.(Ⅱ),slope farmland (Ⅲ),grassland (Ⅳ),shrubs of Sophora davidii (Franch.) Skeels (Ⅴ)).A correlation analysis was used to determine the main precipitation parameters which influence the runoff and sediment yield,and a t-test analysis was used to compare the impacts on the sediment yield among vegetation types.[Results]1) The rainfall events with short duration and high intensity rainfall easily caused the runoff and soil erosion in this area,while the rainfall events with long duration and low intensity did not cause the runoff and soil erosion.2) For all vegetation types,there was generally a significant (P <0.05),linear and positive correlation between the runoff and sediment yield and the rainfall parameters of rainfall depth and the maximum rainfall intensity (per 10 min,30 min,and 60 min);while no significant (P >0.05) correlation existed for the rainfall duration and mean rainfall intensity.In addition,there was a significant linear and positive correlation between the sediment yield and runoff depth.3) The reduction of total runoff by different vegetation types followed the order of:Ⅲ >Ⅱ >Ⅰ and Ⅴ >Ⅳ.The reduction of total sediment by different vegetation types followed the order of:Ⅱ >Ⅳ >Ⅰ and Ⅴ >Ⅲ.Except the insignificant(P >0.05) difference in the total runoff and sediment yield between the vegetation types of Ⅰ and Ⅴ,all differences between other vegetation types were significant (P <0.05).[Conculsions] The comparison of runoff and sediment yield among the vegetation types shows that the vegetation types of Ⅰ,Ⅲ and Ⅴ present a serious water and soil loss,and they require an urgent erosion control treatment.However,the vegetation type of Ⅱ presents a significant benefit of water and soil conservation.In order to intensify the control of rocky desertification and to increase the forest coverage in the study area,the benefits of soil and water conservation by forest/vegetation restoration sould be fully utilized.The results of this study offer a scientific basis for the ecological restoration aimed for the soil and water conservation in the karst sites of the Danjiangkou Reservoir area.
中文关键词	植被类型 ; 产流产沙 ; 丹江口库区 ; 喀斯特地区
英文关键词	vegetation type runoff and sediment yield Danjiangkou Reservoir area karst site
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:6734057
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/354111
作者单位	周梦玲, 北京林业大学水土保持学院, 北京 100083, 中国. 郭建斌, 北京林业大学水土保持学院, 北京 100083, 中国. 周金星, 北京林业大学水土保持学院, 北京 100083, 中国. 陈霄, 北京林业大学水土保持学院, 北京 100083, 中国. 王磊, 中国林业科学研究院荒漠化研究所, 北京 100091, 中国. 闫伟鹏, 河南省淅川县林业局, 淅川, 河南 474450, 中国.
推荐引用方式 GB/T 7714	周梦玲,郭建斌,周金星,等. 丹江口库区喀斯特坡地不同植被覆盖类型的产流产沙特征[J],2020,18(2).
APA	周梦玲,郭建斌,周金星,王磊,陈霄,&闫伟鹏.(2020).丹江口库区喀斯特坡地不同植被覆盖类型的产流产沙特征.中国水土保持科学,18(2).
MLA	周梦玲,et al."丹江口库区喀斯特坡地不同植被覆盖类型的产流产沙特征".中国水土保持科学 18.2(2020).