干旱区生态环境知识资源中心(Arid): Effect of eucalyptus on blue and green water availability and discharge in the tropical highlands: An interpretation of available literature

Arid

DOI	10.2478/johh-2023-0020
	Effect of eucalyptus on blue and green water availability and discharge in the tropical highlands: An interpretation of available literature
	Steenhuis, Tammo S.; Alemie, Telashwork C.; Muche, Habtamu; Tilahun, Seifu A.; Zimale, Fasikaw A.; Mhiret, Demesew A.
通讯作者	Steenhuis, TS
来源期刊	JOURNAL OF HYDROLOGY AND HYDROMECHANICS
ISSN	0042-790X
EISSN	1338-4333
出版年	2023
卷号	71 期号:3 页码:221-230
英文摘要	The highlands serve as water towers for the blue water in the surrounding area, with often insufficient rainfall for rainfed crops. The population is growing in the highlands, changing the hydrology and blue and green water availability. One of the changes that affect the highlands of Ethiopia is the rapidly expanding areas of small patches of eucalyptus on farmers fields. This manuscript aims to sort through the limited available literature and develop a water balance model as a starting point to discuss how hydrology is affected by increased acreage of eucalyptus in the highlands. We find some evidence in the literature that patches of eucalyptus during the dry phase may withdraw water from the subsoil up to twice the rate of evapotranspiration when the soil water is not limited. Since saturation excess generates surface runoff in the subhumid and humid highlands, water withdrawn during the dry phase should be made up before the area with eucalyptus becomes hydraulically active. The amount of water that can be removed from storage by eucalyptus is greater in areas with a long dry monsoon phase than in temperate climates for the same increase in trees. We also found, as expected, that the eucalyptus water balance model, as developed in this paper, was not valid for areas in semi-arid and arid regions. Soil crusting and water repellency might induce infiltration excess runoff. A tentative implication is that since most blue water is produced in the areas with the highest rainfall, eucalyptus in subhumid and humid monsoon regions will affect the blue water supply downstream but not the plant available green water although shading will decrease yield in the immediate surroundings of the eucalyptus trees.
英文关键词	Monsoon Mountainous watersheds Saturation excess runoff Reforestation Afforestation Water balance Streamflow Ethiopia
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001045936300001
WOS关键词	HUMID ETHIOPIAN HIGHLANDS ; HYDROLOGIC-CYCLE ; RUNOFF PROCESSES ; RIVER-BASIN ; NILE BASIN ; EVAPORATION ; VEGETATION ; CLIMATE ; CAMALDULENSIS ; PLANTATIONS
WOS类目	Water Resources
WOS研究方向	Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/397434
推荐引用方式 GB/T 7714	Steenhuis, Tammo S.,Alemie, Telashwork C.,Muche, Habtamu,et al. Effect of eucalyptus on blue and green water availability and discharge in the tropical highlands: An interpretation of available literature[J],2023,71(3):221-230.
APA	Steenhuis, Tammo S.,Alemie, Telashwork C.,Muche, Habtamu,Tilahun, Seifu A.,Zimale, Fasikaw A.,&Mhiret, Demesew A..(2023).Effect of eucalyptus on blue and green water availability and discharge in the tropical highlands: An interpretation of available literature.JOURNAL OF HYDROLOGY AND HYDROMECHANICS,71(3),221-230.
MLA	Steenhuis, Tammo S.,et al."Effect of eucalyptus on blue and green water availability and discharge in the tropical highlands: An interpretation of available literature".JOURNAL OF HYDROLOGY AND HYDROMECHANICS 71.3(2023):221-230.