1. 宁夏大学农学院,银川,750021
2. 宁夏大学生态环境学院,银川,750021
3. 宁夏大学西北土地退化与生态系统恢复国家重点实验室培养基地,银川,750021
4. 西北退化生态系统恢复与重建教育部重点实验室,银川,750021
[ "徐苗苗(1998—),女,宁夏中卫人,硕士研究生,主要从事水土保持与土壤水文研究。E-mail:3036649605@qq.com" ]
纸质出版:2023
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徐苗苗, 孟晨, 王兴, 等. 围栏封育对荒漠草原灌丛草地土壤优先流的影响研究[J]. 水土保持学报, 2023,37(3):81-86.
XU Miaomiao, MENG Chen, WANG Xing, et al. Study on the Effect of Grazing and Enclosure on the Preferential Flow of Soil in Desert Grassland and Shrub Grassland[J]. 2023, 37(3): 81-86.
徐苗苗, 孟晨, 王兴, 等. 围栏封育对荒漠草原灌丛草地土壤优先流的影响研究[J]. 水土保持学报, 2023,37(3):81-86. DOI: 10.13870/j.cnki.stbcxb.2023.03.011.
XU Miaomiao, MENG Chen, WANG Xing, et al. Study on the Effect of Grazing and Enclosure on the Preferential Flow of Soil in Desert Grassland and Shrub Grassland[J]. 2023, 37(3): 81-86. DOI: 10.13870/j.cnki.stbcxb.2023.03.011.
为探究围封对灌丛草地土壤优先流的影响
以宁夏吴忠市盐池县典型荒漠草原区为研究区
通过野外入渗染色试验、图像处理分析等方法
对围封荒漠草原灌丛草地土壤优先流的影响进行评价。结果表明:(1)围栏封育与放牧管理样地土壤水分入渗特征存在差异
在围栏封育样地
草地、天然柠条林地、人工柠条林地的入渗染色图像分别在0—125
0—115
0—105 cm呈现均匀分布
而在125—240
115—150
105—140 cm呈现染色分支
在放牧管理样地
草地、天然柠条林地、人工柠条林地入渗染色图像分别在0—80
0—70
0—80 cm呈现均匀分布
围栏封育导致土壤优先流发生深度更大;(2)土壤剖面染色面积比表现为围栏封育草地>围栏封育天然柠条林地>围栏封育人工柠条林地>放牧管理人工柠条林地>放牧管理天然柠条林地>放牧管理草地
土壤染色深度表现为围栏封育草地>围栏封育天然柠条林地>放牧管理草地>放牧管理天然柠条林地>围栏封育人工柠条林地>放牧管理人工柠条林地
围栏封育管理会导致土壤剖面染色面积比及染色深度增大;(3)土壤优先流变异系数表现为放牧管理天然柠条林地>放牧管理人工柠条林地>围栏封育天然柠条林地>放牧管理草地>围栏封育人工柠条林地>围栏封育草地
放牧管理导致土壤优先流程度增加
而围栏封育降低灌木林地及草地的优先流程度。因此
在荒漠草原等干旱半干旱地区
围栏封育可作为提升土壤水分均匀入渗深度、降低优先流发生程度、提高土壤水分利用效率的重要管理方式。
In order to explore effect of the enclosure of shrub grassland on soil preferential flow
typical desert area in Ningxia province
Wuzhong city was taken as the study area
field infiltration dyeing test and image processing analysis were used. The results showed that: (1) In the fenced and enclosed plots
the infiltration staining images showed obvious difference. In the fenced and enclosed plots
grassland
natural Caragana korshinskii forest and artificial C. korshinskii forest showed uniform distribution at 0-125
0-115 and 0-105 cm
respectively
and branching at 125-240
115-150 and 105-140 cm. While in the grazing management plots
the infiltration staining images of grassland
natural C. korshinskii forest and artificial C. korshinskii forest showed uniform distribution in 0-80
0-70 and 0-80 cm
respectively. The depth of soil preferential flow was deepened due to fencing. (2) The area ratio of soil profile staining was as follows: fenced grassland > fenced natural C. korshinskii forest > fenced artificial C. korshinskii forest > grazing management artificial C. korshinskii forest > grazing management natural C. korshinskii forest > grazing management grassland. The depth of soil staining was as follows: fenced grassland > fenced natural C. korshinskii forest > grazing managed grassland > grazing managed natural C. korshinskii forest > fenced artificial C. korshinskii forest > grazing managed artificial C. korshinskii forest. Fenced management would lead to the increase of soil profile staining area ratio and depth. (3) Soil preferential flow variation coefficient of performance was as follows: grazing management natural C. korshinskii woodland > grazing management artificial C. korshinskii > enclosure cultivating natural C. korshinskii woodland > grazing management grassland > grazing management cultivating artificial C. korshinskii forest land > enclosures fence grassland. Grazing management will lead to increment of soil preferential flow. Cultivating and enclosures will reduce the degree of preferential flow shrub forest and grass. Therefore
in arid and semi-arid areas such as desert steppe
fencing can be an important management method to improve the uniform infiltration depth of soil water
reduce the occurrence of preferential flow
and improve the efficiency of soil water use.
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