10-Evaluation of nutrient loadings and carrying capacity of Bhoj wetland ecosystem

Abstract

Sustainable lake management approach involves estimation of nutrient loadings from point and non-point sources. In the present study nutrient loadings from eleven sub-watersheds of Bhoj wetland were estimated on seasonal basis. The maximum input of nutrients was observed during monsoon season in comparison to other seasons. Loading of NO3- N ranged between 0.032-64.10 tons and TP between 0.016-24.10 tons. The higher residence time of nutrients in the present investigation indicates the lower nutrient carrying capacity. Nutrient input from sub-watersheds II and I are mostly of urban in nature, while input from sub-watersheds III, IV and a part of II and IX were mostly of cattle and agricultural.