Abstract
| Original language | English |
|---|---|
| Journal | Water, Air and Soil Pollution |
| Volume | 177 |
| Pages (from-to) | 103-118 |
| Number of pages | 16 |
| ISSN | 0049-6979 |
| DOIs | |
| Publication status | Published - 2006 |
| MoE publication type | A1 Journal article-refereed |
Fields of Science
- 411 Agriculture and forestry
Cite this
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Retention of phosphorus in soil and vegetation of a buffer zone area during snowmelt peak flow in southern Finland. / Väänänen, Riitta; Nieminen, Mika; Vuollekoski, Martti; Ilvesniemi, Hannu.
In: Water, Air and Soil Pollution, Vol. 177, 2006, p. 103-118.Research output: Contribution to journal › Article › Scientific › peer-review
TY - JOUR
T1 - Retention of phosphorus in soil and vegetation of a buffer zone area during snowmelt peak flow in southern Finland
AU - Väänänen, Riitta
AU - Nieminen, Mika
AU - Vuollekoski, Martti
AU - Ilvesniemi, Hannu
PY - 2006
Y1 - 2006
N2 - In regions with a distinct winter-period, nearly half of the annual runoff occurs during a short snow-melt period early in spring. During this time functioning buffer zones are important means of preventing the leaching of phosphorus from forest land into downstream watercourses. Sparse vegetation restricts biological P accumulation and high flows reduce the capacity of deeper soil layers to adsorb P, indicating that the effectiveness of buffer zones may be low. Our aim was to increase the understanding of phosphorus retention in a buffer zone area under such unfavourable conditions for P removal, and to estimate the amount of P sorbed by soil and taken up by vascular plants and mosses. Over a five-day period in spring we added 10 kg (60 kg ha(-1)) of PO4-P and 185 MBq (1100 MBq ha(-1)) P-32 to a 25-50 m wide buffer zone area (0.17 ha) in southern Finland. We measured the total P retention and recovery during ten days after the beginning of the experiment. Recovery of P-32 was 16% of added P, of which 90% was in soil, 3% in vascular plants and 5% in mosses. Thus, our results showed that the total P retention was low, most likely because the water flow did not slow down sufficiently and penetrate deeply enough to enable a close contact between P in the runoff and the soil matrix. Most of the recovered P was in the soil suggesting that adsorption by soil was the most important sink for P under early spring high flow conditions.
AB - In regions with a distinct winter-period, nearly half of the annual runoff occurs during a short snow-melt period early in spring. During this time functioning buffer zones are important means of preventing the leaching of phosphorus from forest land into downstream watercourses. Sparse vegetation restricts biological P accumulation and high flows reduce the capacity of deeper soil layers to adsorb P, indicating that the effectiveness of buffer zones may be low. Our aim was to increase the understanding of phosphorus retention in a buffer zone area under such unfavourable conditions for P removal, and to estimate the amount of P sorbed by soil and taken up by vascular plants and mosses. Over a five-day period in spring we added 10 kg (60 kg ha(-1)) of PO4-P and 185 MBq (1100 MBq ha(-1)) P-32 to a 25-50 m wide buffer zone area (0.17 ha) in southern Finland. We measured the total P retention and recovery during ten days after the beginning of the experiment. Recovery of P-32 was 16% of added P, of which 90% was in soil, 3% in vascular plants and 5% in mosses. Thus, our results showed that the total P retention was low, most likely because the water flow did not slow down sufficiently and penetrate deeply enough to enable a close contact between P in the runoff and the soil matrix. Most of the recovered P was in the soil suggesting that adsorption by soil was the most important sink for P under early spring high flow conditions.
KW - 411 Agriculture and forestry
U2 - 10.1007/s11270-006-9106-1
DO - 10.1007/s11270-006-9106-1
M3 - Article
VL - 177
SP - 103
EP - 118
JO - Water, Air and Soil Pollution
JF - Water, Air and Soil Pollution
SN - 0049-6979
ER -