干旱区生态环境知识资源中心(Arid): 鄂尔多斯高原软梁、硬梁弃耕农田土壤水分入渗特性

Arid

	鄂尔多斯高原软梁、硬梁弃耕农田土壤水分入渗特性
其他题名	The characteristics of soil water infiltration on the abandoned croplands in soft hill and hard ridge of the Ordos Plateau
	易三桂 1; 蔡文涛 1; 来利明 2; 周继华 1; 张晓龙 1; 管天玉 1; 姜联合 2; 郑元润 2
来源期刊	中国水土保持科学
ISSN	2096-2673
出版年	2018
卷号	16 期号:5 页码:49-56
中文摘要	土壤水分入渗特性与不同层次土壤水分密切相关,影响农田弃耕后的植被演替过程。为深入理解鄂尔多斯高原弃耕农田土壤水分入渗随植被演替的变化规律,以鄂尔多斯高原软梁、硬梁不同年限的弃耕农田为对象,采用双环入渗仪测定土壤水分入渗参数,利用Kostiakov-Lewis模型模拟软梁和硬梁弃耕农田(共计12个弃耕类别)的水分入渗过程,分析它们的水分入渗规律。结果表明: 1)软梁土壤初渗速率随弃耕年限增加呈不显著的降低趋势;稳渗速率和累积入渗高度随弃耕年限增加呈现先降低后增加的趋势,且在弃耕10年时显著降低; 2)硬梁土壤初渗速率、稳渗速率和累积入渗高度随弃耕年限增加均呈先增加后降低的趋势,且在弃耕10~ 15年之间明显升高。随弃耕年限增加,软梁土壤水分入渗浅层化,硬梁土壤水分入渗能力有所提高。研究结果可为鄂尔多斯高原弃耕农田植被恢复提供科学依据。
英文摘要	[Background] The Ordos Plateau is a typical arid and semi-arid grassland area. Over reclamation of grassland is one of the main causes for shrub encroachment and desertification in the Ordos Plateau. Soil moisture is a key factor for restoration of abandoned cropland in arid and semi-arid areas. The characteristics of soil water infiltration are closely related to soil moisture in different soil layers,and the soil water infiltration in different soil layers can affect vegetation succession process in abandoned croplands. In order to better understand changes of soil water infiltration with vegetation succession in abandoned croplands,the characteristics of soil water infiltration on abandoned croplands with different abandoned years in soft hill and hard ridge in the Ordos Plateau were investigated. [Methods] In soft hill and hard ridge of the Ordos Plateau,croplands with different abandoned years (12 kinds of abandoned cropland) were selected,and double ring infiltration device was used to measure soil infiltration parameters,and Kostiakov-Lewis model was used to simulate soil infiltration process of these abandoned croplands with different abandoned years. [Results]1) In soft hill,the initial infiltration rate decreased over abandoned years,but it did not show significant difference among different abandoned years. The final infiltration rate and the total infiltration height declined over abandoned years,reached the lowest values in 15th year,and then increased over abandoned years,and the final infiltration rate and the total infiltration height showed a significant decrease in 10th year. 2) In hard ridge,the initial infiltration rate,the final infiltration rate and the total infiltration height were positively correlated with abandoned years before it reached split point in 10th year (for the initial infiltration rate) and 15th year (for the final infiltration rate and the total infiltration height),thereafter declined with further increase of abandoned years,and there were significant increase from 10th to 15th year. 3) In soft hill,there was no obvious change in a value over abandoned years,but K value showed a decreasing trend with the increase of abandoned years. There was no significant change in a value over abandoned years,K value increased with the increase of abandoned years,reached the highest value in 10th year,and then declined. K value showed a significant increase from 10th year to 20th year in hard ridge. [Conclusions]With increase of abandoned years,the soil water infiltration decreased and soil water might increase in shallow soil layers in soft hill; soil structure and soil water infiltration capacity were improved in hard ridge. These results implied that the water and soil preservation capacity gradually improved in croplands over abandoned years without human disturbance,and the results may provide scientific basis in decision-making for restoration of abandoned croplands in Ordos Plateau.
中文关键词	灌丛化 ; 弃耕农田 ; 土壤水分入渗 ; Kostiakov-Lewis模型 ; 鄂尔多斯高原
英文关键词	shrub encroachment abandoned cropland soil infiltration Kostiakov-Lewis model the Ordos Plateau
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:6369752
来源机构	中国科学院植物研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/238852
作者单位	1.中国科学院植物研究所;;中国科学院大学, 中国科学院北方资源重点实验室;;, ;;, 北京;;北京 100093;;100049, 中国; 2.中国科学院植物研究所, 中国科学院北方资源重点实验室, 北京 100093, 中国
推荐引用方式 GB/T 7714	易三桂,蔡文涛,来利明,等. 鄂尔多斯高原软梁、硬梁弃耕农田土壤水分入渗特性[J]. 中国科学院植物研究所,2018,16(5):49-56.
APA	易三桂.,蔡文涛.,来利明.,周继华.,张晓龙.,...&郑元润.(2018).鄂尔多斯高原软梁、硬梁弃耕农田土壤水分入渗特性.中国水土保持科学,16(5),49-56.
MLA	易三桂,et al."鄂尔多斯高原软梁、硬梁弃耕农田土壤水分入渗特性".中国水土保持科学 16.5(2018):49-56.