Response of soil nutrients and erodibility to slope aspect in the northern agro-pastoral ecotone, China
Rattachement africain : cn. Niveau de preuve : code pays fourni par la source.
Le résumé fourni par la source
Abstract. Soil erosion, considered a major environmental and social problem, leads to the loss of soil nutrients and the degradation of soil structure and impacts plant growth. However, data on the effects of land use changes caused by vegetation restoration on soil nutrients and erodibility for different slope aspects are limited. This study was conducted to detect the response of soil nutrients and erodibility to slope aspect in a typical watershed in the northern agro-pastoral ecotone in China. The following indexes were used to determine the improvement in soil nutrients and erodibility through a weighted summation method: the comprehensive soil nutrient index and the comprehensive soil erodibility index. The results showed that the vegetation types with the highest comprehensive soil quality index (CSQI) values on western, northern, southern, and eastern slopes were Pinus sylvestris and Astragalus melilotoides (1.45), Caragana korshinskii and Capillipedium parviflorum (2.35), Astragalus melilotoides (4.78), and Caragana korshinskii and Lespedeza bicolor (5.00), respectively. Slope aspect had a significant effect on understory vegetation characteristics, soil nutrients, and soil erodibility. Understory vegetation and soil characteristics explained 50.86 %–74.56 % of the total variance in soil nutrients and the erodibility. Mean weight diameter and total phosphorus were the main factors that affected the CSQI for different slope aspects. Our study suggests that the combinations of species, such as C. korshinskii and L. bicolor, were the optimal selection to improve soil nutrients and soil erodibility for any slope aspect.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Response of soil nutrients and erodibility to slope aspect in the northern agro-pastoral ecotone, China
- Date Crossref
- 17/01/2024
- Éditeur
- Copernicus GmbH
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Beijing Forestry University Key Laboratory of State Forestry and Grassland Administration on Soil and Water Conservation pays non établi dans la noticeUniversité ou école supérieure
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State Forestry and Grassland Administration pays non établi dans la noticeOrganisme public
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Tarim University pays non établi dans la noticeUniversité ou école supérieure
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East China University of Technology pays non établi dans la noticeUniversité ou école supérieure
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School of Soil and Water Conservation The Metropolitan Area Forest Ecosystem Research Station pays non établi dans la noticeUniversité ou école supérieure
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School of Science pays non établi dans la noticeUniversité ou école supérieure
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Design & Research Institute Co. Shanghai Investigation pays non établi dans la noticeStructure de recherche
Key Laboratory of State Forestry and Grassland Administration on Soil and Water Conservation — Beijing Forestry University, State Forestry and Grassland Administration et Tarim University, avec 4 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.