Effects of stepping on soil respiration of Zoysia matrella lawn during the winter dormancy period

doi:10.11686/cyxb20140210

Abstract

Abstract: With the acceleration of urbanization, urban green areas are rapidly expanding. Human stepping is one of the important disturbances impacting on urban green space and may affect the soil respiration and carbon cycle of lawns. Therefore, we choose stepping and control plots in a typical subtropical Zoysia matrella lawn. Soil respiration rates were continuously measured during the winter dormant period using a Li-8100 automatic instrument. Seasonal variations in soil respiration was characterized by a pattern of mono-peak curves, initially decreasing but then increasing. Human stepping significantly reduced the soil respiration rate and temperature sensitivity of soil respiration (Q₁₀) in the Z. matrella lawn during the period of dormancy. Soil respiration of Z. matrella lawn was controlled more by soil temperature than soil moisture over the dormant period. Stepping reduced soil respiration rate of Z. matrella lawn by 53.6% on average. Stepping-induced changes in soil physical properties and growth of Z. matrella might interactively cause the decline in soil respiration.

CLC Number:

XIONG Li, XU Zheng-feng, WU Fu-zhong, YANG Wan-qin, YIN rui, LI Zhi-ping, NI Xiang-yin, XIONG Hai-tao. Effects of stepping on soil respiration of Zoysia matrella lawn during the winter dormancy period[J]. Acta Prataculturae Sinica, 2014, 23(2): 83-89.

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