This is certainly more serious than an overcultivation
of bourgeois manners.
A series of crop failures caused by drought, overcultivation
, and lack of fertilizer had produced several years of serious food shortages.
Indian farming remains a very vulnerable sector that is prone to overcultivation
and frequent environmental hazards.
Tomlinson's illustrative "doomsday scenario" traces a possible course of future events from overpopulation and consequent overcultivation
to an inevitable conclusion in which the "vast majority" of humanity perishes.
and decreasing soil fertility, along with low fertilizer usage, resulted in overall underproductivity of the land.
* An estimated 38% of the world's land is threatened with desertification, owing mostly to overgrazing, overcultivation
, and deforestation.
By then in both Korea and Japan, significant advances in premodern agrarian technology achieved in the thirteenth and fourteenth centuries had reached their limits--exemplified in overcultivation
, deforestation, frequent floods, famine, and epidemics--and the population was either decreasing or in stasis.
Causes related to human activity include unsustainable agricultural practices such as overcultivation
, nutrient inputs, poor irrigation practices, deforestation, and overgrazing.
Refugee settlements, such as in Malawi, Guinea and eastern Sudan, have been deemed to have caused soil erosion and overcultivation
and consequent soil depletion, and they are thought to have led to excessive pumping of groundwater and water pollution, such as in eastern Congo and Kenya.
With rising population numbers, overcultivation
and overgrazing, deforestation and pressure on the land all lead to soil erosion and ecological deterioration.
, overgrazing, deforestation, overexploitation of water, and poor irrigation are the main reasons for reoccurrence and prolonging the droughts.
These maladapted practices are commonly identified as overcultivation
, overgrazing, deforestation, and poor irrigation practices.