Please visit the UN Atlas of Our Changing Environment website to read about an i
ID: 298107 • Letter: P
Question
Please visit the UN Atlas of Our Changing Environment website to read about an irrigation project in Al Isawiyah, Al Jowf, Saudi Arabia (30°02'47.8"N 38°19'59.9"E) and click on any of the place name links to view the irrigation system in Google Map. You can also click on the Al Isawiyah.kml file you download to explore the area in Google Earth (if installed in the computer) from a regional context or from the physical geography perspective.
Answer the following three questions in a typed response. You may either print and hand in your answers, or cut and paste them into the spaces provided on the Blackboard website. Each question will be graded “credit” or “no credit” depending on your ability to answer the questions completely using scientific terms and concepts from class. Answers that do not meet criteria will receive no credit.
Use the figures below to estimate the area of the center-pivot irrigation (CPI) fields in 1991, 2000, and 2004. CPI-irrigated fields appear as green circles on the satellite images. Each circle covers approximately 0.166 km2 (1/6 km2). For this question, we will focus on the study area outlined in black in each of the three images.
How much land was irrigated in the black square in 1991? 0km2
How much land was irrigated in the black square in 2000? ________km2
How much land was irrigated in the black square in 2004? ________km2
[Bonus] If the land conversion continues at the average yearly rate between 1991 and 2004, when will the entire area within the black square turn into the CPI fields? By year_______(e.g. 2016)
geeegge $30 ·000 2004 2000 1991 o ee 0eee.Explanation / Answer
The total area of land was irrigated in the black square in 2000 is about 31/6 = 5.16 km2
Total area of the land was irrigated in 2004 was about 162/6 = 27 km2.
It will cover its whole area in proposed 2016.