地球科学进展 ›› 2008, Vol. 23 ›› Issue (7): 692 -697. doi: 10.11867/j.issn.1001-8166.2008.07.0692

流域水循环的生物学研究 上一篇    下一篇

内陆河流域基于绿水理论的生态—水文过程研究
王刚 1,张鹏 2,陈年来 2   
  1. 1.兰州大学生命科学学院,甘肃 兰州 730000;2.甘肃农业大学资源与环境学院,甘肃 兰州 730070
  • 收稿日期:2008-05-12 修回日期:2008-06-10 出版日期:2008-07-10
  • 通讯作者: 王刚 E-mail:wgmg36@lzu.edu.cn
  • 基金资助:

    国家重点基础研究发展计划项目“退化森林植被的定向恢复机制与调控途径”(编号:2002CB111505);“十一五”支撑计划课题“民勤连古城雨养白刺沙堆生物生态系统建设技术示范”(编号:2007BAD46B03)资助.

Study of Eco-hydrological Process Based on Green Water Theory in Inland River Basin

Wang Gang 1,Zhang Peng 2,Chen Nianlai 2   

  1. 1.School of Life Science, Lanzhou University, Lanzhou 730000,China;2.College of Resource and Environmental Science, Gansu Agriculture University, Lanzhou 730070,China
  • Received:2008-05-12 Revised:2008-06-10 Online:2008-07-10 Published:2008-07-10

水文过程与植物生态过程之间的相互作用,是生态水文学研究的重点。基于Falkenmark等提出的绿水和蓝水概念的生态水文学研究,使水循环与生态学过程紧密地联系起来,并凸现了植物对水循环的作用。按绿、蓝水的理论思路进行分析,植被的水源涵养功能可看作是森林、草地等对天然降水在绿水和蓝水之间的按比例分成;荒漠雨养植被中植物的水循环模式是“纯绿”的,即降雨渗入土壤的水都以蒸散发(绿水)形式消耗掉;荒漠河(湖)岸植物的水循环是由蓝到绿,即其水分来源是地下水(蓝水),经蒸腾(绿水)而消耗。

Interaction between hydrological process and plant ecological process is the main research content of Eco-hydrology. Based on the conceptions of green water (GW) and blue water (BW), the research of Eco-hydrology linked water cycle with ecological process closely, and moreover, protruded the effects of plant on water cycle. According to the theory of GW and BW, the water conservation function of vegetation can be regarded as a proportional division of natural rainfall between GW and BW by means of forest and grassland. In desert area, water-cycle model of rain-fed plant is "pure green", because the rain permeated into the soil would be consumed completely through evaporation and transpiration and (GW), the model of desert riparian plant is from blue to green, in that its moisture originates from ground water (BW), and it would be depleted by transpiration (GW).
On the basis of GW theory, research of eco-hydrological process in inland river basin should be considered as follows:①water conservation efficiency of forest vegetation. Through trace back to historical record (annual ring) of individual growth of main plant species, review the GW dynamics of forest community. To analyze how the distribution mode of GW and BW in mountain forest being affected by ecological process such as community succession and development of ecosystem, that is water conservation efficiency of forest. ②the duality of GW source of xeric shrub plant. To investigate the characteristics of GW origin of Reaumuria soongorica and Salsola passerina which belong to extreme xerophyte, and to discuss the impacts of global climate change and grazing on water cycle patterns of Reaumuria soongorica.③ the duality of water source of desert riparian (including terrace) plant. Study on water source duality (GW and BW ) of Phragmites communis, to carry out a tracing observation of water cycle of plant which initially uses groundwater as the source, and to confirm that if these plants will merely turn to natural rainfall to survive when groundwater lowers.
From the perspective of eco-hydrological research in inland river basin, the further research work should be:①to extend the conception of GW and BW for “white water” and “brown water” can be involved in. ②focus on the research of eco-hydrological process of desert rain-fed vegetation, and probe into the physiological and ecological process of desert plant which is coupling with hydrological process on individual and community level. ③analyse the depletion of GW resource which is caused by afforestation and vegetation recovery for increasing carbon pool, and evaluate the cost of bio-carbon sequestration GW for ecosystem.

中图分类号: 

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