Page 11 - ผลกระทบจากการเปลี่ยนแปลงสภาพภูมิอากาศ และการเผาไหม้ในพื้นที่เกษตรกรรม ต่อความอุดมสมบูรณ์ของดิน และการชะล้างพังทลายของดินในพื้นที่ปลูกข้าวโพด บริเวณลุ่มน้ำแม่แจ่มตอนล่าง Climate Change and Hotspot Impact for Soil Fertility and Soil Erosion in Corn Acreage. Lower Part of Nam Mae Cham Basin Area.
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ห้องสมุดกรมพัฒนาที่ดิน
abstract
The Mae Cham Sub-basin research looked at the effects of climate change on soil fertility,
soil erosion, and fire on corn belt farming in 2018-2020. The ground truth and collected
dataset as soil OM, C, N, P, and K by means of MMF model using GIS and meteorological data.
Burn scars and CO2 emissions caused by corn belt farming.
The soil loss is 10,959,467 tons per year as a result of 1,011.6 mm of rainfall per year
on a surface area of 2,454,375 rai in the Mae Cham sub-basin. The corn belt farming area is
116,416 rai, with an annual soil loss of 613,716 tons. The amount and intensity of precipitation
is the primary climatic factor governing soil erosion by water. On the other hand, soil fertility
in the Mae Cham sub-basin is 3.08 percent OM. The Pair Sample T-test of soil fertility shows
that OM, C, and N are significantly different at the 95 percent confidence interval. Every year,
there are 21 hotspots that cover 12,917 rai and emit 5,683 tons of CO2. Policy planning
includes soil conservation, erosion control, and fire protection in corn belts.
