New Zealand Journal of Forestry Science

Table 4 Percent of mean total root biomass (g) and root length (m) by diameter size class at year 5

From: Root system attributes of 12 juvenile indigenous early colonising shrub and tree species with potential for mitigating erosion in New Zealand

Root diameter size class (mm)
Species	Fibrous (< 1)	> 1 to < 2	> 2 to < 5	> 5 to < 10	> 10 to < 20	> 20 to < 50
Root biomass
Coriaria arborea	8	5	15	21	26	25
Myrsine australis	30	19	25	18	8	–
Pseudopanax arboreus	15	5	15	22	28	15
Sophora tetraptera	15	9	18	18	21	19
Cordyline australis	32	12	51	5	–	–
Hoheria populnea	17	8	16	18	27	14
Knightia excelsa	16	14	26	22	15	7
Pittosporum tenuifolium	13	7	22	23	23	12
Pittosporum eugenioides	10	8	23	23	21	15
Coprosma robusta	34	7	18	19	13	9
Plagianthus regius	16	6	14	18	21	25
Leptospermum scoparium	13	6	21	28	26	6
Root length
Coriaria arborea	–	46	37	12	4	1
Myrsine australis	–	59	35	5	1	–
Pseudopanax arboreus	–	44	37	14	4	1
Sophora tetraptera	–	58	31	8	2.5	0.5
Cordyline australis	–	38	59	3	–	–
Hoheria populnea	–	57	32	7.5	3	0.5
Knightia excelsa	–	61	32	5.5	1.5	< 0.1
Pittosporum tenuifolium	–	43	44	10	2.5	0.5
Pittosporum eugenioides	–	50.5	38	8.5	2.5	0.5
Coprosma robusta	–	51	37	10	2	< 0.1
Plagianthus regius	–	59	30	8	2	1
Leptospermum scoparium	–	50	38	10	2	< 0.1

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