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P. 219
! 1# ÿ!", 7: #9$%·&@µö'()&v*+,_@kl./ 2 1 5
=0.502+
respectively.ThenewPTFbasedonsoildataof175runoffplotswasgivenasbelow:θ f
-3
cl
1 .30×10 ×f-0.115× ρ b .ThenewPTFindicatedthat θ f ofsubtropicalsoilswasmainlyaffectedby
cl
claycontent (f)and ρ b .Byverifyingwithanindependentdataset,thenewPTFwasshowntopredict θ f
2 3 3 3 3
valuesaccurately,withanR of0.48, ε r of0.035m /m,and εof-0.024m /m.ThePTFsdevel
opedbasedontemperateandtropicalsoilsperformedpoorlywhenapplyingtosubtropicalregions.The
),
newPTFoutperformstheexistingmodels ,anditonlyrequiresthetwobasicsoilparameters(fand ρ b
cl
whichareeasytomeasure.
Keywords:subtropicalsoil;fieldcapacity;soiltexture;bulkdensity;pedotransferfunction
3
3
tÐÈ( Ät 0.043m /m)。Kotlar . [10] ¹¬¨
1 ./01
U&ÖüÝG$(5Wà×zm PTF, øùW
ìÂQW}(fieldcapacity, θ f j>(5^õ: sklüÝ, ¨U&ÖüÝx&]ý
)
P ¯ § U ¬ 4 ã í Q m Þ L â W k q } PTF ú45\R¨mhi, ²y¬ÎúºÇÈ
3 3 [11]
(m /m), ß}tjùYUþE m(5³´W 45\R3hiP.。Nguyen .
kmýÀ, ¬jÒ¾ñã@QECG»imÖú °³m PTFhiUý·×þ(5 θ f
û [1] 。θ f jÈ}(5QWãm-I>?wx, ú mêë, äåôõ,PTFhiã:î\RÀ©,
YìÁ!~sW¯V、 UþWkX¬´êU.ü yäãò¬ú[³ø¾¾¿C\m(5»。tC
X[³-IU¬ [2] 。 \Âm¾SF(5þV、 Ô&、 Eþ&|[³
[12]
Wsm θ f i&üÝÒÓìÂϲÁ!Ý、 _Q
, FÃHIVÔ| θ f m34t 。P/
[3] [1314]
Ý~§eTÝ. üÝ。ìÂϲÁ!ÝjÊ 45ôõ, θ f S(5 fËø 、 S ρ b Ëø
om
[15]
º6TÁWÆ(5Hî3~, $3úCô¬úû [5] 。Lal m45>, θ f S f、fBËÌø
sa
si
G( (ep9) ðksW/·¼, ®XWkHîÿÈ , ²S fËø。Tomasella . [16] 45ôõ θ f
cl
3mqW}Ötð(5m θ f _QÝjX¬_Q¹ S f、f Ëø。Adhikary . [6] m45\ôõ θ f
;
si cl
zH(, úc¨ß³ÎÉWb, Õ(É4ãÉ
si
S f、f Ëø。Fý45¤õ, (5|C θ f
sa
QmP¯W}HîÿȽ, ]·íîmqW}Ö m34[0t\RtßQE
。
;
tð(Ém θ f §eTÝj¹¬§eTi&¾ Da . [17] 45ôõ, ï?ñ(5z{zß9m
&WOG( x9ÁÂt -33kPa) (5ÉVmâq PTF ¬*ñ(5W§¾hi½êëêPE, i
W}。ϲÁ!Ýiº]ùPMN, tÈL\ j0t?ñS*ñ(5mþV、 Ô&þk[
R45; _QÝ~§eTÝ(É}PL, ³PLm
, FÃy(5W§¾=
。v3, (
¼ÉSi&º]ü½;§。(5[³/'ÑVÔ 5³¨|j34 θ f m=01wx, *ñ、 H*ñ
|, ø(É, /³x|9EfÔ, (5 C\É(5Ô、 kº]G», (5³¨|q}
m θ f Lã¬[wÇf, \I-öi& [4] 。W Ö¸PE [18] 。°³¬hi θ f m PTFHIÎ*
îz(pedotransferfunction,PTF) LʺPi&m ?ñ*ñC\m(5z{, ,Adhikary . [6] 、
(5'ÑVÔ¾Î8Pi&m(5W§¾ Gupta . [9] 、Botula . [12] ~ Da . [17] kþ{V、
×z。0v, 45(5tW§¾×zm PTF ²T?ñC\、 Éå~W?.C\m(5z{, G$
kwI。 =#\R θ f m PTF«。0'H*ñ\R(
,Ön³/45ǹ¬klüÝ$K 5z{ß9m PTF hi(5 θ f m45øPõ, F
PTF ÎhitC\、 t(5n«m θ f Ò [57] 。 ð³«úð\Rm¬t, 34Wà
Rawls . [8] ãÚ{i&m(5VÔ| «mhi。
( |C~³¨|q}.) h(5 θ f SRSqW}, 'ýÐ0, Ñài&»!H*ñC\
y « ú T ! ( 5 4 5 ü X í î ; < ò ¬。 175 û»i¡\m(5 θ f ρ b sa si cl om
、 、f、f、f f .VÔ
Gupta . [9] {(5»Ö@q} (f)、 ë@q} |, °³ PTF hiH*ñ\R θ f Òmêë
sa
(f)、 ö@q}(f)、 ³¨|q}(f) (5r- , JX¬/CéklüÝG$¬Ñ
cl
om
si
)
( ρ b .Î8 θ f äåôõ, aiÒShiÒwÂP \R(5 θ f m# PTF «。
,