Spatial distribution of surface soil water content under different vegetation types in northwest Guangxi, China |
| |
Authors: | Wanxia Peng Tongqing Song Fuping Zeng Kelin Wang Hu Du Shiyang Lu |
| |
Institution: | 1. Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Mapoling, Changsha, 410125, China 2. Huanjiang Observation and Research Station for Karst Ecosystem, Chinese Academy of Sciences, Huanjiang, Hechi, 547100, Guangxi, China 3. Graduate University of the Chinese Academy of Sciences, Beijing, 100049, China
|
| |
Abstract: | Geostatistical and statistical analyses were combined to examine the spatial distribution of soil water content under four vegetation types during the dry season, in the peak-cluster depression in the karst region in northwest Guangxi, southwest China. The soil water content significantly increased from farmland to plantation, secondary forest, and primary forest; whereas the variation coefficients, the sill (C 0+C), and total spatial variance increased, although the range decreased. The spatial distribution of soil water content in the different vegetation types had a high spatial autocorrelation. Different models produced a best fit for the semivariograms of the four vegetation types. Elevation and slope position were the primary factors influencing the spatial distribution of soil water content, with other key factors differing between the four vegetation types. Moreover, even though different specific factors influenced soil water content in the four vegetation types, the correlations and degrees of associations between the soil water content and these various factors differed. Therefore, the corresponding strategies for rational usage and management of water resources should be different for the four vegetation types in this region. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|