[Soil heterogeneity and its interaction with plants in karst areas].

Soil heterogeneity is at a high level in the karst areas, which resulted from the complex habitat. On the one hand, plants have some adaptive strategies to such special habitats by forming certain morphological and physiological characteristics, which result in higher diversity of functional traits. One the other hand, plants improve the physical and chemical properties of soil through a series of life activities.

[Spatial evolution of land use intensity and landscape pattern response of the typical basins in Guizhou Province, China].

Based on the small scale characteristics of the basin, which is a kind of special landform influenced by the human activities obviously in Karst mountain area, the system grid method and the semivariogram model were used to analyze the 15 basins which belonged to three types in the territory of Guizhou Province to reveal the general pattern of spatial evolution of land use intensity and the mutual relationship with the landscape pattern change of the typical basins in the Karst mountainous area of Guizhou Province in 2005, 2010 and 2015. The results showed that the dynamic spatial evolution of land use intensity and response mode of landscape pattern showed obvious difference under the different basin types. In general, with the decrease of economic level of the basins from high to low, the land use intensity decreased in the form of a gradient.