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Carbon stock under major land use/land cover types of Hades sub-watershed, eastern Ethiopia.
Carbon Balance and Management ( IF 3.8 ) Pub Date : 2019-05-22 , DOI: 10.1186/s13021-019-0122-z
Tessema Toru 1 , Kibebew Kibret 1
Affiliation  

Developing land management scenarios that have the potential to sequester carbon and reduce greenhouse gasses (GHG) emission on a sustainable basis entails quantifying the current carbon stock under different land uses. In light of this, a study was conducted in Hades sub-watershed, eastern Ethiopia, to explore the carbon stock under four major land uses: natural forest, coffee agroforestry, grazing land and cropland, involving samples from four carbon pools: aboveground, belowground, litter, and soil. To this end, vegetation and soil samples were collected from the respective land uses following recommended procedures. The results indicate that organic carbon concentration decreased with soil depth though substantial amount of carbon was found in the lower soil depths under land use with woody perennials. The mean total organic carbon stock ranged from 138.95 t ha−1 in the cropland to 496.26 t ha−1 in the natural forest. The soil organic carbon stock was found to be relatively higher than that of the vegetation carbon stock in the natural forest and coffee agroforestry land uses. This study highlights the importance of assessing watershed level carbon stock for better and carbon friendly land use decision making. Land uses with woody perennials have high carbon stock than those without. Hence, conservation-based production systems with inclusion of woody perennials are options suggested to enhance carbon sequestration in the sub watershed.

中文翻译:

埃塞俄比亚东部Hades子流域主要土地利用/土地覆盖类型下的碳储量。

制定有可能在可持续基础上封存碳并减少温室气体(GHG)排放的土地管理方案,需要量化不同土地用途下的当前碳储量。有鉴于此,在埃塞俄比亚东部哈德斯小流域进行了一项研究,以探索四种主要土地用途下的碳储量:天然林,咖啡农林业,牧场和农田,涉及来自四个碳库的样本:地上,地下,垃圾和土壤。为此,按照建议的程序从相应的土地用途中收集了植被和土壤样品。结果表明,尽管多年生木本多年生植物在土地利用下的较低土壤深度中发现了大量的碳,但有机碳浓度随土壤深度而降低。平均总有机碳储量范围从农田的138.95 t ha-1到天然林的496.26 t ha-1。在天然林和咖啡农林用地中,发现土壤有机碳储量相对高于植被碳储量。这项研究强调了评估流域水平的碳储量对于更好和碳友好的土地利用决策的重要性。多年生木本的土地使用的碳储量比没有多年生木的土地利用高。因此,建议采用保护性生产系统,其中包括多年生木本植物,以增强子流域的碳固存。在天然林和咖啡农林用地中,发现土壤有机碳储量相对高于植被碳储量。这项研究强调了评估流域水平的碳储量对于更好和碳友好的土地利用决策的重要性。多年生木本的土地使用的碳储量比没有多年生木的土地利用高。因此,建议采用保护性生产系统,其中包括多年生木本植物,以增强子流域的碳固存。在天然林和咖啡农林用地中,发现土壤有机碳储量相对高于植被碳储量。这项研究强调了评估流域水平的碳储量对于更好和碳友好的土地利用决策的重要性。多年生木本的土地使用的碳储量比没有多年生木的土地利用高。因此,建议采用保护性生产系统,其中包括多年生木本植物,以增强子流域的碳固存。
更新日期:2019-05-22
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