Energies 2014, 7(3), 1251-1264; doi:10.3390/en7031251
Article

Simulated Effects of Land Cover Conversion on the Surface Energy Budget in the Southwest of China

Received: 6 November 2013; in revised form: 23 December 2013 / Accepted: 26 February 2014 / Published: 3 March 2014
(This article belongs to the Special Issue Large Scale LUCC, Surface Energy Fluxes and Energy Use)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: In this paper, the coupled WRF/SSiB model, accompanied by a Karst Rocky Desertification (KRD) map of the Guizhou Karst Plateau (GKP) of China, was applied to detect how the changed vegetation and soil characteristics over the GKP modify the energy balance at the land surface. The results indicated that land degradation led to reduced net radiation by inducing more upward shortwave and longwave radiation, which were associated with increasing surface albedo and temperature, respectively. The KRD also resulted in changed surface energy partitioning into sensible and latent heat fluxes. The latent heat flux at land surface was reduced substantially due to the higher surface albedo and stomatal resistance, the lower Leaf Area Index (LAI) and roughness length in the degradation experiment, while the sensible heat flux increased, mainly because of the higher surface temperature. Furthermore, the moisture flux convergence was reduced, owing to the lower atmospheric heating and the relative subsidence. However, compared with the reduced evaporation, the decrease in moisture flux convergence contributed much less to the reduced precipitation. Precipitation strongly affects soil moisture, vegetation growth and phenology, and thus evaporation and convective latent heating, so when precipitation was changed, a feedback loop was created.
Keywords: Karst Rocky Desertification; land-surface energy balance; regional climate; Guizhou Karst Plateau; WRF/SSiB model
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MDPI and ACS Style

Gao, J.; Wu, S. Simulated Effects of Land Cover Conversion on the Surface Energy Budget in the Southwest of China. Energies 2014, 7, 1251-1264.

AMA Style

Gao J, Wu S. Simulated Effects of Land Cover Conversion on the Surface Energy Budget in the Southwest of China. Energies. 2014; 7(3):1251-1264.

Chicago/Turabian Style

Gao, Jiangbo; Wu, Shaohong. 2014. "Simulated Effects of Land Cover Conversion on the Surface Energy Budget in the Southwest of China." Energies 7, no. 3: 1251-1264.

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