Understanding Per Capita Arable Land Availability

The question asks us to determine the descending order of countries based on the per capita availability of arable land. Per capita availability refers to the amount of something available per person. In this case, it's the amount of arable land divided by the total population of the country.

The formula for per capita arable land is:

\( \text{Per Capita Arable Land} = \frac{\text{Total Arable Land Area}}{\text{Total Population}} \)

A higher value means more arable land is available for each person in that country. We need to compare Brazil, India, and China based on this metric.

Comparing Arable Land Availability in Brazil, India, and China

Let's consider the key factors that influence per capita arable land in these three countries: total arable land area and total population.

• Brazil: Brazil is a vast country with a large land area, including significant areas of fertile land suitable for agriculture. While it has a substantial population, it is considerably smaller than the populations of India and China. Its relatively large arable land area combined with a lower population compared to the other two countries generally results in higher per capita arable land availability.
• India: India has a large total land area, much of which is used for agriculture due to its agrarian economy and high population density. However, India also has one of the world's largest populations. The large population size significantly divides the available arable land, resulting in a relatively low per capita figure. Land fragmentation and degradation are also contributing factors.
• China: China also has a very large land area and the world's largest or second-largest population (very close to India). Similar to India, despite having a considerable amount of arable land, its massive population size leads to a low per capita availability. Furthermore, rapid urbanization, industrialization, and environmental issues like desertification and soil degradation put pressure on China's arable land resources.

Comparing the three, Brazil stands out as having significantly higher per capita arable land because of its large land base and a population that is much smaller than India's or China's. Between India and China, both face challenges due to immense populations and high population density. While the exact figures fluctuate and depend on the data source and year, India's per capita arable land is often cited as slightly higher than or comparable to China's, though both are low globally. However, considering the relative pressure of population on available agricultural land, China's per capita figure is generally considered the lowest among the three.

Therefore, ranking them in descending order of per capita availability (from highest to lowest) would be Brazil, followed by India, and then China.

Determining the Descending Order

Based on the analysis, the country with the most per capita arable land is Brazil, followed by India, and finally China with the least per capita arable land among the three.

The correct descending order is: Brazil – India – China.

Revision Table: Per Capita Arable Land Comparison

This table summarizes the ranking based on our analysis:

Additional Information on Arable Land and Population

Arable land is land under temporary crops (double-cropped areas are counted once), temporary meadows for mowing or pasturing, land under market or kitchen gardens, and land temporarily fallow. Land abandoned as a result of shifting cultivation is excluded. The availability of arable land per capita is a key indicator related to food security, population pressure on land resources, and agricultural potential.

• High population density in countries like India and China puts immense pressure on limited arable land resources.
• Factors like urbanization, industrial growth, land degradation (soil erosion, salinity, desertification), and conversion of agricultural land for other uses reduce the available arable land over time.
• Differences in agricultural practices, technology, and irrigation also affect how productively arable land is used, but per capita availability focuses purely on the area relative to population.