The soil organic carbon density spatial heterogeneity and its impact factors under different karst landforms Online publication date: Tue, 13-Oct-2020
by Xingfu Wang; Xianfei Huang; Jiwei Hu; Zhenming Zhang
International Journal of Global Warming (IJGW), Vol. 22, No. 2, 2020
Abstract: To study the spatial heterogeneity and effect factors of soil organic carbon density (SOCD) under different karst landforms, total of 1,173 samples were taken from different karst landforms including Puding (KP), Xingyi (KPCD), Guanling (KC), Libo (KVF) and Yinjiang (KTV) in Guizhou Province. SOCD characteristics in lands with different vegetation types, land uses and soil types under different karst landforms were analysed. The relationship between SOCD and environment factors was analysed via redundancy analysis. The results indicate that there is a larger discrepancy of SOCD among difference karst landforms types, and this distinction decreased gradually with the increasing of soil depth. The SOCD in soil horizons (0-100 cm) of KPCD, KP, KTV, KC and KVF were 11.10 kg·m−2, 8.43 kg·m−2, 8.13 kg·m−2, 7.06 kg·m−2 and 7.06 kg·m−2, respectively. Soil thickness and rock exposure rate are critical factors affecting SOCD in karst regions.
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Global Warming (IJGW):
Login with your Inderscience username and password:
Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.
If you still need assistance, please email subs@inderscience.com
Our Blog 
Follow us on Twitter 
Visit us on Facebook