IMHE OpenIR  > 成都山地所知识仓储(2009年以前)
Nutrient release from weathering of purplish rocks in the Sichuan Basin, China
Zhu Bo; Wang Tao; You Xiang; Gao Mei-Rong
Corresponding AuthorZhu Bo
2008
Source PublicationPEDOSPHERE
ISSN1002-0160
EISSN2210-5107
Volume18Issue:2Pages:257-264
SubtypeArticle
AbstractPurplish 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.
KeywordNutrient Release Purplish Rock Soil Formation Weathering
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
WOS Subject ExtendedAgriculture
Indexed BySCI
WOS KeywordPARENT MATERIAL ; SOILS ; MICROORGANISMS ; RATES
Language英语
WOS SubjectSoil Science
WOS IDWOS:000254480400015
Citation statistics
Cited Times:50[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/10529
Collection成都山地所知识仓储(2009年以前)
山地表生过程与生态调控重点实验室
AffiliationChinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
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.
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