A global review on hydrological responses to forest change across multiple spatial scales: Importance of scale, climate, forest type and hydrological regime

JOURNAL OF HYDROLOGY

卷:546

Review

Zhang, Mingfang^1,2  Liu, Ning^2,3  Harper, Richard³  Li, Qiang⁴  Liu, Kuan⁵  Wei, Xiaohua⁴  Ning, Dingyuan¹  Hou, Yiping¹  Liu, Shirong^2,4 

[1] Univ Elect Sci & Technol China, Ctr Informat Geoscience, Sch Resources & Environm, Chengdu 611731, Peoples R China

[2] Chinese Acad Forestry, Res Inst Forest Ecol, Environm & Protect, Beijing 100091, Peoples R China

[3] Murdoch Univ, Sch Vet & Life Sci, 90 S St, Murdoch, WA 6150, Australia

[4] Univ British Columbia Okanagan, Dept Earth & Environm Sci, Kelowna VIXIR3, BC, Canada

[5] Univ Toronto, Dalla Lana Sch Publ Hlth, 155 Coll St, Toronto M5T 3M7, ON, Canada

关键词: Forest change;    Annual runoff;    Scale;    Climate;    Forest type;    Hydrological regime;   

DOI  :  10.1016/j.jhydrol.2016.12.040

来源: Elsevier

【 摘 要 】

Despite extensive studies on hydrological responses to forest cover change in small watersheds, the hydrological responses to forest change and associated mechanisms across multiple spatial scales have not been fully understood. This review thus examined about 312 watersheds worldwide to provide a generalized framework to evaluate hydrological responses to forest cover change and to identify the contribution of spatial scale, climate, forest type and hydrological regime in determining the intensity of forest change related hydrological responses in small (<1000 km(2)) and large watersheds ( >= 1000 km(2)). Key findings include: (1) the increase in annual runoff associated with forest cover loss is statistically significant at multiple spatial scales whereas the effect of forest cover gain is statistically inconsistent; (2) the sensitivity of annual runoff to forest cover change tends to attenuate as watershed size increases only in large watersheds; (3) annual runoff is more sensitive to forest cover change in water-limited watersheds than in energy-limited watersheds across all spatial scales; and (4) small mixed forest-dominated watersheds or large snow-dominated watersheds are more hydrologically resilient to forest cover change. These findings improve the understanding of hydrological response to forest cover change at different spatial scales and provide a scientific underpinning to future watershed management in the context of climate change and increasing anthropogenic disturbances. (C) 2016 Elsevier B.V. All rights reserved.

【 授权许可】

Free