attention to the application methods to assess potential impacts and risks to human health and the environment
2. Materials and methods
2.1. Study area
Sierra Leone has four major land forms (the coastal lowlands, interior lowlands, the interior plateau and the Peninsula Mountains, see Fig.
1). The lowlands are in the savannah grassland and the plateau is in the tropical rain forest. Sierra Leone has seven major rivers (the Sewariver, the great Scarcies, the little Scarcies, the Mano river, the river Rokel, the Moa river and the river Young (Fig. 5)) that drain directly into the Atlantic ocean which borders the country from the northwest to the south-west (a coast line of 340 miles). These rivers are perennial and have many tributaries that drain into them. This network of rivers and tributaries often flood their plains providing most parts of the country with high levels of irrigation especially during the rainy season. As a result, the lowlands have a high potential for agricultural production.Sierra Leone experiences two major seasons. The rainy season runs from May through to October and the dry season runs from Novembern to April. The average rainfall ranges from 4000 mm in the west to 2000 mm in the North. The average temperature ranges from 23 to 29 °C (National Geographic, 2015). The country also experiences South-East trade winds and North-West trade winds. The North-West trade winds are experienced from December through to February and bring about a micro season known as the Harmattan in the dry season.During this period, hot and dry winds from the Sahara desert blow across the country. This enhances the drying of crops and hence is the most common harvest time in the country especially form December through to February and bring about a micro season known as the Harmattan in the dry season.During this period, hot and dry winds from the Sahara desert blow across the country. This enhances the drying of crops and hence is the common harvest time in the country especially for rice which is the most cultivated crop in the country (CARD, 2009).
ใส่ใจในวิธีการใช้การประเมินผลกระทบที่มีศักยภาพและความเสี่ยงต่อสุขภาพของมนุษย์และสิ่งแวดล้อม2. วัสดุและวิธีการ2.1. ศึกษาพื้นที่สาธารณรัฐเซียร์ราลีโอนมีแบบฟอร์มที่ดินหลักสี่ (เลาะชายฝั่ง ที่ราบลุ่มภายใน ราบสูงภายใน และ เทือกเขาเพนนินซูล่า ดูรูป1). The lowlands are in the savannah grassland and the plateau is in the tropical rain forest. Sierra Leone has seven major rivers (the Sewariver, the great Scarcies, the little Scarcies, the Mano river, the river Rokel, the Moa river and the river Young (Fig. 5)) that drain directly into the Atlantic ocean which borders the country from the northwest to the south-west (a coast line of 340 miles). These rivers are perennial and have many tributaries that drain into them. This network of rivers and tributaries often flood their plains providing most parts of the country with high levels of irrigation especially during the rainy season. As a result, the lowlands have a high potential for agricultural production.Sierra Leone experiences two major seasons. The rainy season runs from May through to October and the dry season runs from Novembern to April. The average rainfall ranges from 4000 mm in the west to 2000 mm in the North. The average temperature ranges from 23 to 29 °C (National Geographic, 2015). The country also experiences South-East trade winds and North-West trade winds. The North-West trade winds are experienced from December through to February and bring about a micro season known as the Harmattan in the dry season.During this period, hot and dry winds from the Sahara desert blow across the country. This enhances the drying of crops and hence is the most common harvest time in the country especially form December through to February and bring about a micro season known as the Harmattan in the dry season.During this period, hot and dry winds from the Sahara desert blow across the country. This enhances the drying of crops and hence is the common harvest time in the country especially for rice which is the most cultivated crop in the country (CARD, 2009).
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