Assessment of land use change scenario to increase primary productivity function at local scale
2019
Valujeva, K., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia);Wageningen Univ. and Research (Netherlands) | Nipers, A., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia) | Lupikis, A., Latvian State Forest Research Inst. Silava, Salaspils, Latvia | Pilecka, J., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia) | Schulte, R.P.O., Wageningen Univ. and Research (Netherlands)
The global population has begun to rise exponentially; therefore, the demand for bioresources including food and fibre is increasing. An increasing demand for food and fibre necessitates more sustainable use of natural resources especially for soilbased ecosystem services. In this context, Functional Land Management was developed to optimize agricultural soilbased ecosystem services to meet both agricultural and environmental targets simultaneously. The aim of the research is to evaluate unmanaged agricultural land use change impact on primary productivity function in three parishes in Latvia by using Functional Land Management framework. Evaluation of primary productivity function was accomplished for both sectors agriculture and forestry by using profit and working hours as a proxyindicators. Production of vegetables and perennial plantations has higher supply of primary productivity function comparing to other land uses. Land use changes affect all soil functions that we expect from our land, especially primary productivity function. After applying land use changes, an increase in profit is higher in Liezere parish for both areas on mineral soils (7.1%) and areas on organic soils (5.2%); while an increase in working hours is higher in Usma parish: 36.6% in areas on mineral soils and 1.0% increase in areas on organic soils. Shortterm benefits are received from agricultural land, while forest land provides long-term return which increases over time but can only be obtained after reaching the age of felling. Before applying land use changes or changes in management practices we have to consider other soil function and national commitments.
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