Fjölrit RALA - 05.12.1999, Page 138

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BIOMASS AND SOIL NUTRIENT POOLS IN NEWZEALAND
Table 3. Weights of C, N, P, K, and Ca in biomass and soil pools at dififerent stages of ecological deg-
radation for three Canterbury high country localities.
Soil
Element Locality Above- Ecological stage Live ground Dead Roots 0 to 200 mm 200 to 400 mm Total
C Craigiebum Forest 136.6 6.2 36.9 82.3 44.7 306.7
(t ha'1) Humid Tall tussock grassland 4.4 16.7 4.2 80.9 34.5 140.7
Subalpine lb Weedy short grassland 1.7 0.8 8.2 72.2 19.8 102.7
Hakatere Tall tussock grassland 5.2 15.3 15.7 90.6 56.0 182.8
Moist sub-humid Mixed tussock grasslandc) 3.2 4.9 9.5 94.0 50.6 162.2
Montane 2b Weedy short grassiand 0.4 0.5 5.0 98.3 56.5 160.7
Tekapo Tall tussock grasslandd) 5.7 9.4 8.0 74.8 60.0 157.9
Dry sub-humid Short tussock grasslandc) 2.3 2.6 6.0 67.2 56.4 134.5
Montane 3 Weedy short grassland 0.9 0.7 7.1 66.1 40.3 115.1
N Craigiebum Forest 884 54 200 2350 1951 5439
(kg ha"1) Humid Tall tussock grassland 75 153 82 4581 2145 7036
Subalpine lb Weedy short grassland 30 8 107 3953 1322 5420
Hakatere Tall tussock grassland 61 115 154 6324 5450 12104
Moist subhumid Mixed tussock grasslandc) 52 59 76 6327 5242 11756
Montane 2b Weedy short grassland 7 4 68 7304 5336 12719
Tekapo Tall tussock grasslandd) 63 62 70 4842 3800 8837
Dry sub-humid Short tussock grasslandc) 38 31 84 4820 3572 8545
Montane 3 Weedy short grassland 15 10 93 5705 3887 9710
P Craigiebum Forest 141 6 37 500 593 1277
(kg ha~‘) Humid Tall tussock grassland 10 23 8 1724 943 2708
Subalpine Ib Weedy short grassland 6 1 16 1633 622 2278
Hakatere Tall tussock grassland 15 16 19 1821 1290 3161
Moist sub-humid Mixed tussock grasslandc) 10 8 15 1735 1301 3069
Montane 2b Weedy short grassland 1 1 8 1543 1475 3028
Tekapo Tall tussock grasslandd) 9 8 5 1444 1480 2946
Dry sub-humid Short tussock grasslandc) 7 4 12 1483 1390 2896
Montane 3 Weedy short grassland 3 2 14 1439 1341 2799
K Craigiebum Forest 591 20 91 65 87
(kg ha"1) Humid Tall tussock grassland 88 73 20 348 83 .
Subaipine lb Weedy short grassland 41 3 67 259 87
Hakatere Tall tussock grassland 107 60 48 162 129 -
Moist sub-humid Mixed tussock grasslandc) 78 39 57 190 N.A.a) b) -
Montane 2b Weedy short grassland 15 14 58 216 86 -
Tekapo Tall tussock grasslandd) 100 34 21 696 94
Dry sub-humid Short tussock grasslandc) 56 16 36 515 88 -
Montane 3 Weedy short grassland 18 10 58 200 76 -
Ca'>) Craigieburn Forest 697 120 337 550 173 -
(kg ha"1) Humid Tall tussock grassland 22 175 15 353 154
Subalpine lb Weedy short grassland 22 5 52 882 243 -
Hakatere Tall tussock grassland 13 72 88 486 215 -
Moist sub-humid Mixed tussock grasslandc) 20 49 85 690 N.A.a) -
Montane 2b Weedy short grassland 10 12 97 1044 260 -
Tekapo Tall tussock grassland d) 19 64 54 1708 120 -
Dry sub-humid Short tussock grasslandc) 28 21 60 1856 790 -
Montane 3 Weedy short grassland 10 8 45 1815 515 -
a) Data not available.
b) fn soils these are exchangeable values only.
c) Biomass data from one sample only.
d) All data from duplicate samples only.