Citation
Zulkifli Y., . and Abdul Rahim N., . (1997) Nutrient exports from secondary forest catchments of Bukit Tarek Kerling Selangor Malaysia experimental forest. [Proceedings Paper]
Abstract
Nutrient exports via streamflow from secondary forest catchments of Bukit Tarek Forest Reserve Kerling Selangor were studied and the results for a one-year period were presented. Streamwater was sampled on a weekly and a storm basis and analyzed for NH3-N NO3-N K Ca and Mg. The total rainfall during the study period amounted to 2367 mm and 2358 mm for Catchment 1 C1 and Catchment 2 C2 respectively. Despite the total rainfall being similar for the two areas a difference in runoff was observed: 939.2 mm for C1 and 1101.6 mm for C2. The mean concentration mg/l of various nutrients found for C1 and C2 were respectively 0.04 and 0.04 for NH3-N 0.37 and 0.45 for NO3-N 0.70 and 0.0. for K 0.30 and 0.31 for Ca and 0.35 and 0.43 for Mg. Instantaneous concentrations of the various nutrients were weakly correlated with discharge. Potassium concentration however showed fairly food correlations and its rating curves were selected to predict export values. For other nutrients their export values were derived from the product of monthly total discharge and monthly mean concentration. Annual nutrient exports expressed in kg/ha/yr from C1 and C2 were calculated to be 0.37 and 0.43 respectively for NH3-N 3.84 and 5.52 for NO2-N 7.15 and 11.04 for K 2.35 and 2.92 for Ca and 3.07 and 4.38 for Mg. The larger exports of nutrient from C2 compared with C1 can be explained by the higher streamflow volume in the former. However since streamflow would only account for an additional 17 in increase in export values the higher exports values as high as 54 for K and 43 for NO3-N could possibly be explained in terms of stormflow characteristics. Nutrient budget in a forested ecosystem depends virtually on nature inputs especially via rainfall and dry deposition. Accelerated loss of nutrient due to catchment pertubation therefore may disrupt the catchment nutrient balance.
Download File
Full text available from:
|
Abstract
Nutrient exports via streamflow from secondary forest catchments of Bukit Tarek Forest Reserve Kerling Selangor were studied and the results for a one-year period were presented. Streamwater was sampled on a weekly and a storm basis and analyzed for NH3-N NO3-N K Ca and Mg. The total rainfall during the study period amounted to 2367 mm and 2358 mm for Catchment 1 C1 and Catchment 2 C2 respectively. Despite the total rainfall being similar for the two areas a difference in runoff was observed: 939.2 mm for C1 and 1101.6 mm for C2. The mean concentration mg/l of various nutrients found for C1 and C2 were respectively 0.04 and 0.04 for NH3-N 0.37 and 0.45 for NO3-N 0.70 and 0.0. for K 0.30 and 0.31 for Ca and 0.35 and 0.43 for Mg. Instantaneous concentrations of the various nutrients were weakly correlated with discharge. Potassium concentration however showed fairly food correlations and its rating curves were selected to predict export values. For other nutrients their export values were derived from the product of monthly total discharge and monthly mean concentration. Annual nutrient exports expressed in kg/ha/yr from C1 and C2 were calculated to be 0.37 and 0.43 respectively for NH3-N 3.84 and 5.52 for NO2-N 7.15 and 11.04 for K 2.35 and 2.92 for Ca and 3.07 and 4.38 for Mg. The larger exports of nutrient from C2 compared with C1 can be explained by the higher streamflow volume in the former. However since streamflow would only account for an additional 17 in increase in export values the higher exports values as high as 54 for K and 43 for NO3-N could possibly be explained in terms of stormflow characteristics. Nutrient budget in a forested ecosystem depends virtually on nature inputs especially via rainfall and dry deposition. Accelerated loss of nutrient due to catchment pertubation therefore may disrupt the catchment nutrient balance.
Additional Metadata
| Item Type: | Proceedings Paper |
|---|---|
| AGROVOC Term: | FORESTRY BIOLOGY |
| AGROVOC Term: | FOREST MANAGEMENT |
| AGROVOC Term: | NUTRITIVE VALUE |
| AGROVOC Term: | WATER |
| AGROVOC Term: | SOIL FERTILITY |
| AGROVOC Term: | NUTRIENTS |
| AGROVOC Term: | MALAYSIA |
| Geographical Term: | MALAYSIA |
| Depositing User: | Ms. Norfaezah Khomsan |
| Last Modified: | 24 Apr 2025 05:27 |
| URI: | http://webagris.upm.edu.my/id/eprint/16196 |
Actions (login required)
 |
View Item |
