Population Structure and Threats to Sustainable Management of Woody Plant Species in a Semi-Arid Agro-Ecosystem in Nigeria
Paper Details
Population Structure and Threats to Sustainable Management of Woody Plant Species in a Semi-Arid Agro-Ecosystem in Nigeria
Abstract
This study was conducted to assess population structure and threat to the sustainable management of woody species in the various ago-ecosystems in Dutsin-Ma Local Government Area (LGA) Katsina State, Nigeria. Purposive and stratified random sampling techniques were used to collect data from 21 randomly demarcated 100m × 100m sample plots. All woody plant species found in the sample plots with stem diameter >2 cm at 20cm above ground, were recorded. Population structure was summarized by diameter classes. For the identification of threats, field and questionnaire surveys were used. A total of 50 questionnaires were distributed at ten questionnaires per ward in five out of the 11 wards in the LGA. The highest numbers (350) of small diameter trees (0.1-1.0cm) were recorded in the agrosilvopastoral system. This was followed by silvopastoral and agrisilviculture systems with 89 and 85, respectively. However, the highest number of large diameter woody tree species was recorded in the silvopastoral system followed by agrosilvopastoral and agrisilviculture systems. The regular reverse J-shaped and fairly regular reverse J-shaped size class distribution observed for agrosilvopastoral and silvopastoral respectively, suggest a recuperating population. Over exploitation, debarking, de-branching, root- digging, leaf harvesting, seed harvesting, poor regeneration, slow rate of growth, wind effect and bush burning were the major threats to sustainable management of woody plant species in the study area. The implications of our findings for sustainable management of woody plant species in the study area are discussed and recommendations made.
Abaje IB, Sawa BA, Ati OF. 2014. Climate Variability and Change, Impacts and Adaptation Strategies in Dutsin-Ma Local Government Area of Katsina State, Nigeria. Journal of Geography and Geology 6(2), 103-112.
Adebayo AA, Tukur AL. 1999. Adamawa State in maps. Paraclete publishers, Yola Nigeria.
Boffa JM. 1999. Agroforestry parklands in Sub-saharan Africa. Food and Agricultural Organisation of the United Nations, Rome. FAO Conservation Guide 34, 230 p.
Dauda AB, Yakubu SO, Kabir I. 2013. Determinants of Fish Consumption in Dutsin-Ma LGA, Katsina State. In: Adediran J A, Saka JO, Ibrahim AG, Adeyemi VA, Atere AO, Adenekan MO. (Eds.) Revamping Nigeria Agriculture Through Transformation Agenda: The Way Forward. Proceedings of the 47th Annual Conference of the Agricultural Society of Nigeria held at the Federal College of Animal Health and Production Technology, Moor Plantation, Ibadan, Oyo State, Nigeria 4th – 8th November, 2013. 1106-1109.
Gideon PK, Verinumbe I. 2013. The contribution of agroforestry tree products to rural farmers in Karim–Lamido Local government area of Taraba state. Journal of Research in Forestry, Wildlife and Environment 5(1), 50-62
Gouwakinnou GN, Kindomihou V, Achille E, Assogbadjo AE, Sinsin B. 2009. Population structure and abundance of Sclerocarya birrea (A. Rich) Hochst subsp. birrea in two contrasting land-use systems in Benin. International Journal of Biodiversity and Conservation 1(6), 194-201.
Jimoh SO, Asinwa IO. 2012. Densities and Distribution of Vitellaria paradoxa C.F. Gaertn. and Parkia biglobosa (Jacq.) R. Br. ex G. Don in Agro-ecosystems in Oyo State, Nigeria. Nigerian Journal of Ecology 12, 28-36.
Jimoh SO, Amusa TO, Azeez IO. 2013. Population distribution and threats to Sustainable management of selected non-timber forest products in tropical lowland rainforests of south western Nigeria. Journal of Forestry Research 24(1), 75-82.
Nikiema A. 2005. Agroforestry Parkland Species Diversity: Uses and Management in Semi-arid West Africa (Burkina Faso). PhD thesis Wageningen University,Netherlands. 8-22.
Sadio S, Negreros-Castillo P. 2003. Trees outside forests: Contributing towards sustainable development being a paper submitted to XII World forest Congress 2003, Quebec city Canada. 0866-B5
Shamaki SB, Bello AG, Dikko AA. 2014. Tree Species Density Distribution in Dabagi Forest Reserve in Semi-Arid Region of Nigeria. In: Adekunle et al., Eds. Forest and Forest Products: Key to Sustainable Livelihood. Proceedings of the fourth Biennial National Conference of the Forest and Forest Products Society, Federal University of Agriculture, Abeokuta, Nigeria, 23-26 April, 2014. 144-148
Simon B, Mushabe D, Nkuutu D, Pomeroy D, Tushabe H. 2004. Trees, Birds and Agriculture. Biodiversity in Uganda’s Farming Systems in Relation to Agricultural Intensification. Strategic Criteria for Rural Investments in Productivity (SCRIP) Program of the USAID Uganda Mission. 12-14.
Smith DM. 1986. The Practice of Silviculture, 8th edition.John Wiley and Sons., New York. 97-102 .
Sobola OO, Amadi DC. 2014. The role of Agroforestry in Environmental Sustainability. In: Forest and Forest Product: Key to Sustainable Livelihood. In Adekunle et al., Eds Proceedings of the fourth Biennial National Conference of the Forest and Forest products society, Federal University of Agriculture, Abeokuta, Nigeria, 23-26 April, 2014. 153-159.
Tukur R, Garba KA, Ibrahim A. 2013. Indigenous Trees Inventory and Their Multipurpose Uses in Dutsin-Ma Area, Katsina State. European Scientific Journal 9(11), 288-300.
Terdo F, Adekola O. 2014. Assesing the Role of Climate Smart Agriculture in Combating Climate Change, Desertification and Improving Rural Livelihood in Northern Nigeria. African Journal of Agricultural Research 9(15), 1180-1191
T.H. Dauda, S.O. Jimoh, I.O. Azeez, 2016. Population Structure and Threats to Sustainable Management of Woody Plant Species in a Semi-Arid Agro-Ecosystem in Nigeria. J. Biodiv. Environ. Sci., 8(2), 275-282.
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