(a) Explain with suitable diagrams A. Losch's model of the Theory of Location related to Central Places. Why has this been…

Location, land management and population change all reflect uneven economic development.

Losch’s central-place model. A. Lösch rejected Christaller’s single-commodity, perfectly regular hexagons. He assumed a homogeneous plain but allowed several goods and several K-values—K=3 (market principle), K=4 (transport principle) and K=7 (administrative principle)—to operate simultaneously. Because different goods have different thresholds and ranges, the market area of a central place is not one neat hexagon but a composite of overlapping hexagons. Around a central place A, six sectors are relatively favourable to A (rich sectors) and six are favourable to neighbouring centres (poor sectors). The boundary between rich and poor sectors is found by comparing transport costs to the nearest competitors. Losch showed that the least-cost position is obtained by rotating the market boundary until the angle between the lines from the new centre to the two nearest existing centres is 150°. This 150° rotation gives the least transport-cost position and yields the 150° principle: a new industrial centre should be sited where that angle is 150°, minimising weighted transport cost and avoiding excessive competition. Diagram: draw A at the centre, six neighbours at 60° intervals, nested/overlapping hexagons labelled K=3, K=4, K=7; arrange industrial/service sectors around A by K-value; shade six alternating 60° sectors as A-rich and six as A-poor; mark the 150° rays. Criticism: the model remains geometrically rigid, assumes a featureless plain, and neglects actual transport-cost variations.

Sustainable Land Management. Sustainable Land Management (SLM) harmonises environmental, economic and social goals by treating land as a common-pool resource whose productivity depends on soil, water, vegetation and institutions. Environmentally, it conserves soil and water through contour bunding, check dams, afforestation, agroforestry and integrated watershed management, reducing erosion and restoring groundwater. Economically, it raises productivity and diversifies income through improved cropping, fodder, horticulture and market linkages, so that conservation pays. Socially, it secures livelihoods and equity through participatory planning and tenure security. In Sukhomajri, Mahendragarh (Haryana), community-managed check dams, afforestation and crop diversification increased groundwater, yields and household income while reducing soil loss. Watershed development in Alwar district, Rajasthan, combined rainwater harvesting, soil conservation and livelihood support to improve cropping and reduce distress migration. The Forest Rights Act, 2006, strengthens social and environmental outcomes by securing tribal land tenure, giving communities a stake in forest conservation and reducing illegal encroachment. Thus SLM aligns the triple bottom line: ecological stability, economic returns and social inclusion.

Demographic Transition and uneven development. Demographic Transition Theory (DTT) links population change to economic development, but its stages appear unevenly across and within countries. Stage 1, with high birth and death rates, is now largely historical; it resembles pre-industrial conditions and no country is fully in Stage 1 today, though parts of Sub-Saharan Africa still show high fertility and mortality. Stage 2 begins when death rates fall first because of food security, sanitation and medicine, while birth rates remain high; this creates a demographic dividend. India, now in Stage 3 with TFR around 2.0 and declining birth rates, passed through Stage 2 after independence, and its large working-age population is a legacy of that mortality decline. Stage 3, where birth rates fall to low levels, is visible in Japan’s ageing structure even though Japan is now in Stage 4/5. Stage 4/5, with low birth and death rates and negative or zero growth, is seen in Germany. The model is Eurocentric because it assumes a single sequence driven by industrialisation. Within India, Kerala’s low fertility and high human development contrast with Uttar Pradesh’s higher fertility and lower development, showing uneven regional development. In the Islamic world, fertility decline in Iran, Indonesia and Bangladesh has occurred under distinct religious, policy and economic conditions, challenging the classic Western sequence. Hence DTT stages reflect uneven economic development, but not a uniform path.