YU Yanghua1, YANG Danli2, ZHONG Xinping2
(1.School of Karst Science, Guizhou Normal University/The State Key Laboratory Incubation Base for Karst Mountain Ecology Environment of Guizhou Province, Guiyang 550001, China;
2.School of Geography and Environmental Science, Guizhou Normal University, Guiyang 550025, China)
Abstract: To clarify characteristics of soil affinity elements in soils of different landuse types in the karst area of central Guizhou, to reveal effects of landuses on mineral elements, and to promote the sustainable development of agriculture, soils of six typical landuse types, Zea Mays, Tectona, Hylocoreus undulatus, Zanthoxylum bugeanum, Lonicera japonica, and Juglans regia, were sampled and used as research subjects in the study. The contents of 23 mineral elements, such as Fe, Ca, and Cu, in soil were determined to discuss the variation characteristics of different affinity elements and to analyze the interaction effects between elements. It was found that the variation rules of different affinity elements in soils of different landuse types in the karst area of central Guizhou varied: contents of siderophile elements and chalocophile elements in soils of Zea Mays were relatively high, contents of chalocophile elements and atmophile elements in soils of Lonicera japonica were relatively high, contents of lithophile elements in soils of Zanthoxylum bugeanum were relatively high, and soils of Juglans regia tended to accumulate of atmophile elements and lithophile elements; the association degrees of different elements also varied, for instance, Mn, Ca and Al were closely related to other elements. The contents of mineral elements in soils of the central Guizhou rocky desertification area can be controlled by adding Fe and S or/and improving air permeability of soil.
Keywords: land use patterns; soil; element; affinity; karst of central Guizhou
EARTH AND ENVIRONMENT Vol.47, No.4, Tot No.330, 2019, Page 429-435