Climate Change Data Portal
| DOI | 10.5194/soil-10-93-2024 |
| Soil carbon, nitrogen, and phosphorus storage in juniper-oak savanna: role of vegetation and geology | |
| Hsiao, Che-Jen; Leite, Pedro A. M.; Hyodo, Ayumi; Boutton, Thomas W. | |
| 发表日期 | 2024 |
| ISSN | 2199-3971 |
| EISSN | 2199-398X |
| 起始页码 | 10 |
| 结束页码 | 1 |
| 卷号 | 10期号:1 |
| 英文摘要 | Woody-plant encroachment into grasslands and savannas has been globally widespread during the past century, likely driven by interactions between grazing, fire suppression, rising atmospheric CO2, and climate change. In the southernmost US Great Plains, Ashe juniper and live oak have increased in abundance. To evaluate potential interactions between this vegetation change and the underlying soil parent material on ecosystem biogeochemistry, we quantified soil organic carbon (SOC), total nitrogen (TN), total phosphorus (TP), and delta 13C of SOC in soils obtained from trenches passing through grassland, juniper, and oak patches on soils lying atop the respective Edwards and Buda limestone formations in central Texas. Soils on the Edwards formation are more shallow and have more rock outcropping than those on Buda. The delta 13C values of SOC under grasslands was -19 parts per thousand, whereas those under woody patches were -21 parts per thousand to -24 parts per thousand, indicating that wooded areas were relatively recent components of the landscape. Compared with grasslands, areas now dominated by juniper or oak had elevated SOC, TN, and TP storage in soils lying atop Edwards limestone. In Buda soils, only oak patches had increased SOC, TN, and TP storage compared with grasslands. Woody encroachment effects on soil nutrients were higher in soils on the Edwards formation, perhaps because root and litter inputs were more concentrated in the relatively shallow layer of soil atop the Edwards bedrock. Our findings suggest that geological factors should be considered when predicting nutrient store responses in savannas following vegetation change. Given that woody encroachment is occurring globally, our results have important implications for the management and conservation of these ecosystems. The potential interactive effects between vegetation change and soil parent material on C, N, and P storage warrant attention in future studies aimed at understanding and modeling the global consequences of woody encroachment. |
| 语种 | 英语 |
| WOS研究方向 | Agriculture |
| WOS类目 | Soil Science |
| WOS记录号 | WOS:001195017400001 |
| 来源期刊 | SOIL
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/302968 |
| 作者单位 | Texas A&M University System; Texas A&M University College Station; University of Minnesota System; University of Minnesota Twin Cities |
| 推荐引用方式 GB/T 7714 | Hsiao, Che-Jen,Leite, Pedro A. M.,Hyodo, Ayumi,et al. Soil carbon, nitrogen, and phosphorus storage in juniper-oak savanna: role of vegetation and geology[J],2024,10(1). |
| APA | Hsiao, Che-Jen,Leite, Pedro A. M.,Hyodo, Ayumi,&Boutton, Thomas W..(2024).Soil carbon, nitrogen, and phosphorus storage in juniper-oak savanna: role of vegetation and geology.SOIL,10(1). |
| MLA | Hsiao, Che-Jen,et al."Soil carbon, nitrogen, and phosphorus storage in juniper-oak savanna: role of vegetation and geology".SOIL 10.1(2024). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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