Nutrient release from weathering of purplish rocks in the Sichuan Basin, China
文献类型:期刊论文
作者 | Zhu Bo![]() ![]() ![]() |
刊名 | PEDOSPHERE
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出版日期 | 2008-04-01 |
卷号 | 18期号:2页码:257-264 |
关键词 | nutrient release purplish rock soil formation weathering |
ISSN号 | 1002-0160 |
通讯作者 | Zhu Bo |
英文摘要 | Purplish soils having high fertility with mineral nutrients inherited from the parent rock are widely distributed in the hills along the Yangtze River, especially in the Sichuan Basin. Pot and field weathering experiments were conducted to mimic rock weathering and nutrient release processes in order to better understand soil fertility and nutrient compensation. Three types of purplish rock formations formed in the Jurassic period, Shaximiao (J(2)s), Suining (J(3)s), and Penglaizhen (J(3)p), as well as one type formed in the Cretaceous period, the Chengqiangyan group (K(1)c), were used in this study. Results showed that the soil formation rate was in the range from 11.2 to 19.6 mm every year, and rock weathering was in the order of J(3)s > J(3)p > J(2)s > K(1)c. Because more rock surface was exposed to sunlight and rainfall in field conditions, pot weathering was slower than field weathering. Nutrient release rates increased with rock weathering and was in the order similar to that of rock weathering: J(3)p > J(3)s > J(2)s > K(1)c. Potassium release was the most important in all rocks; after 2 years of weathering, 19.4% to 46.9% of K was released from the initial parent rocks, which suggested that K release from weathering could meet most of the crop K requirement in purplish soils. Thus, rapid release of nutrients from weathering of purplish rocks was key to nutrient replenishment and fertility of purplish soils. |
WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
类目[WOS] | Soil Science |
研究领域[WOS] | Agriculture |
关键词[WOS] | PARENT MATERIAL ; SOILS ; MICROORGANISMS ; RATES |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000254480400015 |
源URL | [http://ir.imde.ac.cn/handle/131551/10529] ![]() |
专题 | 成都山地灾害与环境研究所_成都山地所知识仓储(2009年以前) 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
作者单位 | Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China |
推荐引用方式 GB/T 7714 | Zhu Bo,Wang Tao,You Xiang,et al. Nutrient release from weathering of purplish rocks in the Sichuan Basin, China[J]. PEDOSPHERE,2008,18(2):257-264. |
APA | Zhu Bo,Wang Tao,You Xiang,&Gao Mei-Rong.(2008).Nutrient release from weathering of purplish rocks in the Sichuan Basin, China.PEDOSPHERE,18(2),257-264. |
MLA | Zhu Bo,et al."Nutrient release from weathering of purplish rocks in the Sichuan Basin, China".PEDOSPHERE 18.2(2008):257-264. |
入库方式: OAI收割
来源:成都山地灾害与环境研究所
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