IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Physicochemical properties of three typical purple soils with different parent materials and land uses in Sichuan Basin, China
Xiao, Yi1; Tang, Jialiang1; Wang, Mingkuang2
Corresponding Author唐家良
2016-12-25
Source PublicationNatural Resources & Engineering
ISSN2380-2693
Volume1Issue:2Pages:59-68
SubtypeArticle
Contribution Rank1
AbstractMainly located in the Sichuan Basin, known as the ‘Land of Plenty’, purple soils  (developed from purple sandstone and shale) have been long noted as highly productive in spite of their rocky texture. However, information on the physicochemical properties (including mineral properties) of purple soils remained obscure for the scientific community. For example, it is not clear what causes the purple color of the soils. In this study, eight soil profiles of the Jiufeng (JF, acidic), Shibao (SB, neutral), and Yanting (YT, calcareous) areas, representing the three most widely distributed purple soils in Sichuan Basin, were individually sampled under both cropland and forestland, and then analyzed using common chemical analysis and conventional X-ray diffraction to clarify the effects of clay mineral and anthropogenic influences on the typical soils. The results show that considerable variability of soil pH and cation-exchange capacity (CEC) exists between soil types (p < 0.05). Organic matter, total nitrogen, and CEC of forestland are higher than those of farmland, while farmland has a higher content of Olsen-P, indicating significant farming effects on nutrient status. Acidic and neutral purple soils had higher total P contents than calcareous soils while calcareous soils had higher TN, clay, and CaCO 3 contents. OM, TN, TP, and Olsen-P decreased with soil depth both in farmland and forestland soil profiles. Vertical distribution of organic-bound Fe-oxides (Fep) and clay particles also shows the anthropogenic interference on farmland. Illite, chlorite, kaolinite, goethite, and trace amounts of an illite–chlorite mixing layer in clay fractions were identified for typical purple soils. Hematite was observed in the coarser fractions of the calcareous pedons, confirming that the purple soil color was mainly derived from the parent rocks. Understanding of the physicochemical properties and mineral species of soil profiles can shed light on the sustainable uses of typical purple soils in subtropical area.
KeywordClay minerals Fe-oxides land use type purple soil
Subject Area土壤学
DOI10.1080/23802693.2016.1258854
Indexed By其他
Language英语
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/20683
Collection山地表生过程与生态调控重点实验室
Corresponding AuthorTang, Jialiang
Affiliation1.institute of Mountain Hazards and environment, chinese academy of sciences;
2.Department of agricultural chemistry, National taiwan university, taipei, taiwan
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Corresponding 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
Xiao, Yi,Tang, Jialiang,Wang, Mingkuang. Physicochemical properties of three typical purple soils with different parent materials and land uses in Sichuan Basin, China[J]. Natural Resources & Engineering,2016,1(2):59-68.
APA Xiao, Yi,Tang, Jialiang,&Wang, Mingkuang.(2016).Physicochemical properties of three typical purple soils with different parent materials and land uses in Sichuan Basin, China.Natural Resources & Engineering,1(2),59-68.
MLA Xiao, Yi,et al."Physicochemical properties of three typical purple soils with different parent materials and land uses in Sichuan Basin, China".Natural Resources & Engineering 1.2(2016):59-68.
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