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首页> 外文期刊>Agroforestry Systems >Carbon storage and nitrogen cycling in silvopastoral systems on a sodic in northwestern India
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Carbon storage and nitrogen cycling in silvopastoral systems on a sodic in northwestern India

机译：印度西北部苏打地牧牧系统中的碳储存和氮循环

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Tree-based land-use systems could sequester carbon in soil and vegetation and improve nutrient cycling within the systems. The present investigation was aimed at analyzing the role of tree and grass species on biomass productivity, carbon sequestration and nitrogen cycling in silvopastoral systems in a highly sodic soil. The silvopastoral systems (located at Saraswati Reserved Forest, Kurukshetra, 29°4prime; to 30°15prime; N and 75°15prime; to 77°16prime; E) consisted of about six-year-old-tree species of Acacia nilotica, Dalbergia sissoo and Prosopis juliflora in the mainplots of a split-plot experiment with two species of grasses, Desmostachya bipinnata and Sporobolus marginatus, in the subplots. The total carbon storage in the trees + grass systems was 1.18 to 18.55 Mg C ha−1 and carbon input in net primary production varied between 0.98 to 6.50 Mg C ha−1 yr−1. Carbon flux in net primary productivity increased significantly due to integration of Prosopis and Dalbergia with grasses. Compared to 'grass-only' systems, soil organic matter, biological productivity and carbon storage were greater in the silvopastoral systems. Of the total nitrogen uptake by the plants, 4 to 21 per cent was retained in the perennial tree components. Nitrogen cycling in the soil-plant system was found to be efficient. Thus, It is suggested that the silvopastoral systems, integrating trees and grasses hold promise as a strategy for improving highly sodic soils.
机译：基于树的土地利用系统可以隔离土壤和植被中的碳，并改善系统内的养分循环。本研究旨在分析树木和草种在高度碱化土壤中的农牧系统中对生物量生产力，碳固存和氮循环的作用。森林牧区系统（位于库鲁克斯特拉的萨拉斯瓦蒂保护区森林，29°4prime；至30°15prime； N和75°15prime；至77°16prime； E）由大约六岁的金合欢树种组成，该树属于黄檀sissoo和Prosopis juliflora是在一次分区试验中的主要图中，在该分区中使用了两种草Desmostachya bipinnata和Sporobolus marginatus。树木+草类系统中的总碳储量为1.18至18.55 Mg C ha-1 ，净初级生产中的碳输入在0.98至6.50 Mg C ha-1 yr-1 。由于Prosopis和Dalbergia与草整合，净初级生产力中的碳通量显着增加。与“仅草”系统相比，林牧系统的土壤有机质，生物生产力和碳储量更高。在植物吸收的总氮中，4％至21％保留在多年生树木的组成部分中。发现在土壤-植物系统中进行氮循环是有效的。因此，建议将树木和草木结合起来的林牧系统有望成为改良高碱度土壤的策略。

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