Abstract
Recently, the frequent seasonal drought in Southwest China has brought considerable concerns and continuous heated arguments on the “water pump” viewpoint (i.e., the water demand from Hevea spp. and Eucalyptus spp. can be treated as a water pump) once again. However, such viewpoint just focused on water consumption from vegetation transpiration and its ecoenvironment impacts, which had not considered other attributes of vegetation, namely, water saving and drought resistance, and hydrological regulation (water conservation) into consideration. Thus, in this paper, the synthesized attributes of regional vegetation water use had been mainly discussed. The results showed that the study on such aspects as the characters of water consumption from vegetation transpiration, the potential of water saving and drought resistance, and the effects of hydrological regulation in Southwest China lagged far behind, let alone the report on synthesized attributes of water utilization with the organic combination of the three aspects above or the paralleled analysis. Accordingly, in this paper, the study on the synthesized attributes of water use by regional vegetation in Southwest China was suggested, and the objectives of such a special study were clarified, targeting the following aspects: (i) characters of water consumption from transpiration of regional typical artificial vegetation; (ii) potential of water saving and drought resistance of regional typical artificial vegetation; (iii) effects of hydrological regulation of regional typical artificial vegetation; (iv) synthesized attributes of water use by regional typical artificial vegetation. It is expected to provide a new idea for the scientific assessment on the regional vegetation ecoenvironment effects and theoretical guidance for the regional vegetation reconstruction and ecological restoration.
Highlights
In Southwest China, a global hot place for its abundant biodiversity and a place with frequent seasonal drought, an unprecedented transseasonal constant severe drought took place in 2010, which aroused considerable concerns in China and even worldwide [1, 2]
There were many scientific issues worth discussing behind the drought, among which the relationship between regional drought and regional artificial vegetation has become a scientific issue with rather considerable concerns recently [8]
Based on the all-round analysis on the status quo and development trends for characters of water consumption from vegetation transpiration, their potential of water saving and drought resistance, and their effects of hydrological regulation, a special study on the synthesized attributes of water use of typical artificial vegetation in Southwest China was suggested in this paper, in order to provide a new idea for the objective, scientific, and all-round assessment on the ecoenvironment effects of regional vegetation and further to provide a theoretical guidance for the reconstruction and recovery of regional vegetation, as well as a scientific cognition of the relationship between regional drought and regional artificial vegetation
Summary
In Southwest China, a global hot place for its abundant biodiversity and a place with frequent seasonal drought, an unprecedented transseasonal constant severe drought took place in 2010, which aroused considerable concerns in China and even worldwide [1, 2]. (E. spp.) prevailing in the past and the description of the cause of severe droughts in Southwest China as “a human disaster” prevailing in recent years were just in accordance with such ecoenvironment problems Those in favor of “water pump” viewpoint did analyze ecoenvironment effects of regional typical artificial vegetation such as H. spp. Based on the all-round analysis on the status quo and development trends for characters of water consumption from vegetation transpiration, their potential of water saving and drought resistance, and their effects of hydrological regulation, a special study on the synthesized attributes of water use of typical artificial vegetation in Southwest China was suggested in this paper, in order to provide a new idea for the objective, scientific, and all-round assessment on the ecoenvironment effects of regional vegetation and further to provide a theoretical guidance for the reconstruction and recovery of regional vegetation, as well as a scientific cognition of the relationship between regional drought and regional artificial vegetation
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