Effects of different vegetation restoration measures on soil aggregate stability and erodibility on the Loess Plateau, China
文献类型:期刊论文
作者 | Dou Yan xing1,3; Yang Yang2; An Shao Shan3 |
刊名 | Catena |
出版日期 | 2020-02 |
期号 | 185页码:104294 |
关键词 | Soil aggregate stability Loess Plateau Soil erodibility Vegetation restoration measures |
英文摘要 | A B S T R A C T Vegetation restoration may affect soil aggregate stability and the ability of soil to resist erosion. To evaluate the influence of vegetation restoration measures on the stability of soil aggregate and soil erodibility, we chose 7 types of vegetation restoration measures, which included artificial forest (AF), artificial mixed forest (AMF), economic forest (EF), artificial shrub (AS), natural shrub (NS), artificial grass (AG) and natural grass (NG). Then, we analyzed the distribution of water-stable aggregate fractions, mean weight diameter (MWD), geometric mean diameter (GMD), soil erodibility (K value) and other soil properties in the 0–20cm and 20–40cm soil layers, as well as aboveground and underground biomass (AGB and UGB). The results showed that under 7 kinds of vegetation restoration measures, the aggregate fraction<0.25mm was the main component (40.40–77.86%) and the proportion of the>5mm aggregates fluctuated greatly and ranged from 1.87% to 32.50%. And for 7 different vegetation restoration measures, the percentage of aggregate<0.25mm was lower than that of CK (abandoned land), however, the proportion of aggregate>5mm was higher than the CK. Overall, compared with CK, the MWD (2.22 and 1.93mm) and GMD (2.86 and 2.66mm) were both highest in two soil layers under the NS but lowest under the EF (MWD 0.68 and 0.49mm, GMD 1.08 and 0.93mm). The trend of the K value was opposite to these values. These results indicated that the stability of soil aggregate and the ability of soil to resist erosion under NS were strongest. The soil organic carbon (SOC), total nitrogen (TN) and UGB had significantly positive correlations with the proportion of>1mm aggregates and MWD but had negative correlations with the percentage of<0.25mm aggregates (p < 0.05), which indicated that SOC, TN and UGB were involved in the formation of macroaggregates and increased the stability of soil aggregates. These results suggested that natural shrub restoration measures could improve the soil aggregate stability and ability to resist erosion better than forest and grass restoration measures, which can provide a reference for the assessment of vegetation restoration measures. |
出版地 | Germany |
语种 | 英语 |
源URL | [http://ir.iswc.ac.cn/handle/361005/9212] |
专题 | 水保所2018届毕业生论文 |
通讯作者 | An Shao Shan |
作者单位 | 1.University of Chinese Academy of Sciences, Beijing 100049, PR China 2.College of Resource and Environment, Northwest Agriculture & Forest University, Yangling, Shaanxi 712100, PR China 3.State Key Laboratory of Soil Erosion and Dry Land Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, PR China |
推荐引用方式 GB/T 7714 | Dou Yan xing,Yang Yang,An Shao Shan. Effects of different vegetation restoration measures on soil aggregate stability and erodibility on the Loess Plateau, China[J]. Catena,2020(185):104294. |
APA | Dou Yan xing,Yang Yang,&An Shao Shan.(2020).Effects of different vegetation restoration measures on soil aggregate stability and erodibility on the Loess Plateau, China.Catena(185),104294. |
MLA | Dou Yan xing,et al."Effects of different vegetation restoration measures on soil aggregate stability and erodibility on the Loess Plateau, China".Catena .185(2020):104294. |
入库方式: OAI收割
来源:水土保持研究所
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