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Measurement of rainfall interception by xerophytic shrubs in re-vegetated sand dunes

Wang, XP; Li, XR; Zhang, JG; Zhang, ZS and Berndtsson, Ronny LU (2005) In Hydrological Sciences Journal 50(5). p.897-910
Abstract
More than 40 years of re-vegetation using mainly xerophytic shrubs Artemisia ordosica Krasch. and Caragana korshinskii Kom. at Shapotou Desert Experimental Research Station near Lanzhou, China has resulted in established dwarf-shrub and herbaceous cover on sand dunes. Precipitation, as the sole source of water replenishment in the semiarid area, plays a pertinent role in sustaining the desert ecosystem. A field study was conducted to (a) measure interception loss on shrub canopies during individual rainfall events, (b) determine the canopy storage capacity of individual plants, and (c) explore the relationship between interception and rainfall parameters. The total rainfall and its respective partitions as throughfall were determined and... (More)
More than 40 years of re-vegetation using mainly xerophytic shrubs Artemisia ordosica Krasch. and Caragana korshinskii Kom. at Shapotou Desert Experimental Research Station near Lanzhou, China has resulted in established dwarf-shrub and herbaceous cover on sand dunes. Precipitation, as the sole source of water replenishment in the semiarid area, plays a pertinent role in sustaining the desert ecosystem. A field study was conducted to (a) measure interception loss on shrub canopies during individual rainfall events, (b) determine the canopy storage capacity of individual plants, and (c) explore the relationship between interception and rainfall parameters. The total rainfall and its respective partitions as throughfall were determined and the interception losses in the studied ecosystem were quantified. Interception loss was shown to differ among the xerophyte taxa studied. During the growing seasons, the average shrub community interception loss is 6.9% and 11.7% of the simultaneous overall precipitation, for A. ordosica and C. korshinskii, respectively. Taking into account the observed rainfall conditions and vegetation cover characteristics, it was concluded that the interception loss was 2.7% of the total annual precipitation verified in the period for the A. ordosica community with an average cover of 30%, canopy projection area of 0.8 m(2) and canopy storage capacity of 0.75 mm. In contrast, interception loss for the C korshinskii community was 3.8% with an average cover of 46%, canopy projection area of 3.8 m(2) and canopy storage capacity of 0.71 mm. For individual plants of both shrubs, the proportion of interception loss to gross rainfall decreased notably as the rainfall intensity increased between 0 and 2 min h(-1), while it tended to remain constant at about 0.1-0.2 for A. ordosica and 0.1-0.3 for C. korshinskii when the rainfall intensity was > 2 mm h(-1). (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
stabilized sand dune, re-vegetation, interception loss, desert ecosystem, dwarf-shrub, water cycle
in
Hydrological Sciences Journal
volume
50
issue
5
pages
897 - 910
publisher
IAHS Press
external identifiers
  • wos:000232584200012
  • scopus:26444586193
ISSN
0262-6667
DOI
10.1623/hysj.2005.50.5.897
language
English
LU publication?
yes
id
b4892cd4-b5d4-4095-8d04-41037bcaa016 (old id 220247)
date added to LUP
2007-08-20 10:45:06
date last changed
2017-07-09 04:16:21
@article{b4892cd4-b5d4-4095-8d04-41037bcaa016,
  abstract     = {More than 40 years of re-vegetation using mainly xerophytic shrubs Artemisia ordosica Krasch. and Caragana korshinskii Kom. at Shapotou Desert Experimental Research Station near Lanzhou, China has resulted in established dwarf-shrub and herbaceous cover on sand dunes. Precipitation, as the sole source of water replenishment in the semiarid area, plays a pertinent role in sustaining the desert ecosystem. A field study was conducted to (a) measure interception loss on shrub canopies during individual rainfall events, (b) determine the canopy storage capacity of individual plants, and (c) explore the relationship between interception and rainfall parameters. The total rainfall and its respective partitions as throughfall were determined and the interception losses in the studied ecosystem were quantified. Interception loss was shown to differ among the xerophyte taxa studied. During the growing seasons, the average shrub community interception loss is 6.9% and 11.7% of the simultaneous overall precipitation, for A. ordosica and C. korshinskii, respectively. Taking into account the observed rainfall conditions and vegetation cover characteristics, it was concluded that the interception loss was 2.7% of the total annual precipitation verified in the period for the A. ordosica community with an average cover of 30%, canopy projection area of 0.8 m(2) and canopy storage capacity of 0.75 mm. In contrast, interception loss for the C korshinskii community was 3.8% with an average cover of 46%, canopy projection area of 3.8 m(2) and canopy storage capacity of 0.71 mm. For individual plants of both shrubs, the proportion of interception loss to gross rainfall decreased notably as the rainfall intensity increased between 0 and 2 min h(-1), while it tended to remain constant at about 0.1-0.2 for A. ordosica and 0.1-0.3 for C. korshinskii when the rainfall intensity was > 2 mm h(-1).},
  author       = {Wang, XP and Li, XR and Zhang, JG and Zhang, ZS and Berndtsson, Ronny},
  issn         = {0262-6667},
  keyword      = {stabilized sand dune,re-vegetation,interception loss,desert ecosystem,dwarf-shrub,water cycle},
  language     = {eng},
  number       = {5},
  pages        = {897--910},
  publisher    = {IAHS Press},
  series       = {Hydrological Sciences Journal},
  title        = {Measurement of rainfall interception by xerophytic shrubs in re-vegetated sand dunes},
  url          = {http://dx.doi.org/10.1623/hysj.2005.50.5.897},
  volume       = {50},
  year         = {2005},
}