Estimation of water requirement per unit carbon fixed byEucalyptus camaldulensis in semi-arid land of Western Australia

2002 ◽  
Vol 45 (S1) ◽  
pp. 142-147 ◽  
Author(s):  
T. Kojima ◽  
Y. Tanaka ◽  
S. Katoh ◽  
K. Tahara ◽  
N. Takahashi ◽  
...  
2007 ◽  
Vol 20 (4) ◽  
pp. 340-346 ◽  
Author(s):  
Toshinori KOJIMA ◽  
Noriko SAITO ◽  
Yoshiko TANAKA ◽  
Hiroyuki HAMANO ◽  
Shigeru KATO ◽  
...  

1999 ◽  
Vol 3 (2) ◽  
pp. 247-258 ◽  
Author(s):  
G. Boulet ◽  
A. Chehbouni ◽  
I. Braud ◽  
M. Vauclin

Abstract. Two-layer parameterisation of the surface energy budget proves to be realistic for sparse but homogeneously distributed vegetation. For semi-arid land surfaces however, sparse vegetation is usually interspersed by large patches of unshaded bare soil which may interact directly with the atmosphere with little interference with the vegetation. Therefore such surfaces might not be realistically represented by a two-layer parameterisation. The objective of this study is to investigate the issue of representing water and energy transfer processes in arid and semi-arid regions. Two different surface schemes, namely the classic two layer (one-compartment) approach and a two adjacent compartment ("mosaic") approach are used. The performance of both schemes is documented using data sets collected over two sparsely vegetated surfaces in the San Pedro river basin: homogeneously distributed grassland and heterogeneously distributed shrubs. In the latter case the mosaic scheme seems to be more realistic given the quality of the temperature estimates. But no clear statement can be made on the efficiency of both schemes for the total fluxes. Over each site, we investigate the possibility of artificially modifying some of the surface parameters in order to get the surface fluxes simulated by the one-compartment scheme to reproduce the two-compartment ones. The "cost" associated with this process in terms of surface temperature estimates is eventually discussed.


2018 ◽  
Vol 43 (3) ◽  
pp. 499-508 ◽  
Author(s):  
Yuta INOUE ◽  
KENZO Tanaka ◽  
Shigenobu TAMAI ◽  
Fukuju YAMAMOTO ◽  
Norikazu YAMANAKA ◽  
...  

1992 ◽  
Vol 32 (2) ◽  
pp. 237
Author(s):  
TR Hill ◽  
ARJ Bissell ◽  
JR Burt

The yield, plant characteristics (pseudostem height and girth), and relative tolerance to bunch loss of 4 banana varieties (Musa AAA Group, Cavendish subgroup) were studied over 2 crops in the semi-arid subtropics at Carnarvon, Western Australia. The varieties were New Guinea Cavendish, Chinese Cavendish, Hsien.Jen Chiao, and the most widely grown Australian variety, Williams. The marketable yield of Williams was higher (P<0.05) than the mean of the other varieties in the parent crop (70.2 v. 50.7 t/ha) and ratoon 1 crop (65.8 v. 34.4 t/ha). This was the result of lower (P<0.05) bunch loss, about 41% less over the 2 crops, than for the other varieties. Resistance to bunch loss-pseudostem breakage and bunch peduncle snap was not associated with the shorter varieties (New Guinea Cavendish and Chinese Cavendish), but resistance to choke throat was associated with the taller varieties (Williams and Hsien Jen Chiao).


2015 ◽  
Vol 8 (8) ◽  
pp. 2320-2329 ◽  
Author(s):  
P. Michael Mason ◽  
Katherine Glover ◽  
J. Andrew C. Smith ◽  
Kathy J. Willis ◽  
Jeremy Woods ◽  
...  

4–15% of the 2.5 bn ha of semi-arid land globally could generate 59 PW h year−1of electricity without reducing food production, enough to make a major difference to global GHG emissions. The key is anaerobic digestion of a class of understudied, under-developed and hyper-water-efficient plants that use the crassulacean acid metabolism.


Sign in / Sign up

Export Citation Format

Share Document