Status of Soil Properties in Various Land Use Types at Mae Kham Mee Watershed
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Abstract
This study investigated the status of soil properties in five different land-use types within the Mae Kham Mee Watershed: teak plantation, home garden, rubber plantation, corn field, and remnant forest. Soil samples were collected from two depths, 0-5 cm (topsoil) and 20-25 cm (subsoil), with 3 samples from each area, for a total of 15 samples. The samples were analyzed for both physical and chemical properties, and the relationships between these properties and land-use types were examined. The results showed that at the 0-5 cm depth, the average soil hardness was 23.02 cm, soil moisture was 13.82% by weight, bulk density was 1.12 g/cm³, and pH was 5.84. At the 20-25 cm depth, the average soil hardness was 23.96 cm, soil moisture was 16.62% by weight, bulk density was 1.15 g/cm³, and pH was 5.86. The subsoil had slightly higher hardness and bulk density but also higher moisture compared to the topsoil, while the pH values for both layers were similarly acidic. The analysis of the relationships between soil properties and land use clearly indicates that land-use type has a significant impact on both the physical and chemical properties of the soil at different depths. The remnant forest areas had the best soil properties, maintaining their natural state. In contrast, the relationships found in the corn field and teak plantation areas showed signs of significant soil degradation, while the home garden area had high soil fertility due to human management.
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ข้าพเจ้าและผู้เขียนร่วม (ถ้ามี) ขอรับรองว่า ต้นฉบับที่เสนอมานี้ยังไม่เคยได้รับการตีพิมพ์และไม่ได้อยู่ในระหว่างกระบวนการพิจารณาตีพิมพ์ลงในวารสารหรือสิ่งตีพิมพ์อื่นใด ข้าพเจ้าและผู้เขียนร่วม (ถ้ามี) ยอมรับหลักเกณฑ์และเงื่อนไขการพิจารณาต้นฉบับ ทั้งยินยอมให้กองบรรณาธิการมีสิทธิ์พิจารณาและตรวจแก้ต้นฉบับได้ตามที่เห็นสมควร พร้อมนี้ขอมอบลิขสิทธิ์ผลงานที่ได้รับการตีพิมพ์ให้แก่วารสารวนศาสตร์ คณะวนศาสตร์ มหาวิทยาลัยเกษตรศาสตร์ กรณีมีการฟ้องร้องเรื่องการละเมิดลิขสิทธิ์เกี่ยวกับภาพ กราฟ ข้อความส่วนใดส่วนหนึ่ง หรือ ข้อคิดเห็นที่ปรากฏในผลงาน ให้เป็นความรับผิดชอบของข้าพเจ้าและผู้เขียนร่วม (ถ้ามี) แต่เพียงฝ่ายเดียว และหากข้าพเจ้าและผู้เขียนร่วม (ถ้ามี) ประสงค์ถอนบทความในระหว่างกระบวนการพิจารณาของทางวารสาร ข้าพเจ้าและผู้เขียนร่วม (ถ้ามี) ยินดีรับผิดชอบค่าใช้จ่ายทั้งหมดที่เกิดขึ้นในกระบวนการพิจารณาบทความนั้น”
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