An analysis of desertification in china

Definitions[ edit ] Considerable controversy exists over the proper definition of the term "desertification" for which Helmut Geist has identified more than formal definitions. Stone walls are placed around the trenches to prevent the trenches from closing up again. The increase in desertification in theses regions has degraded the land enough where people can no longer productively farm and make a profit.

When unfavourable agro-climatic conditions are combined with an absence of infrastructure and access to markets, as well as poorly adapted production techniques and an underfed and undereducated population, most such zones are excluded from development.

In addition, desertification has been a major driver behind the historical movement of large populations of humans — which obviously plays into the collapse of civilizations.

The rate of desertification increased throughout the second half of last century and, although this trend has since stabilised, the situation remains very serious.

Desertification

As one of the most seriously affected countries, China has made great efforts to combat desertification. Paleodeserts are large sand seas now inactive because they are stabilized by vegetation, some extending beyond the present margins of core deserts, such as the Saharathe largest hot desert.

The Roman Empire The Roman Empire was affected to no small degree by the effects of land degradation, soil erosion, and desertification. This leaves only the less-biologically-active lower-soil-layers, which are often then subsequently baked dry and hard in the sun.

This wall is a much larger-scale version of what American farmers did in the s to stop the great Midwest dust bowl. Unsurprisingly — given their location and power — these people eventually found themselves at war with the Roman Republic, during the Punic Wars.

As it stands now, the annual rate of deforestation is estimated to be around Who were then subsequently pushed out by the Arabs. But such exploitation never lasts forever does it? Desertification Top 10 List 1. And now the region is largely desert, and has never not yet anyways recovered to its previous geopolitical importance.

Greenpeace writes that only 3. Previous article in issue. Windbreaks are made from trees and bushes and are used to reduce soil erosion and evapotranspiration. In fact — though it may be funny to consider it now — Northern Africa was, at the time, the breadbasket of the Roman Empire.

And of its goodness a strong proof is this: Sincethis method to reforest degraded landscape has been applied with some success in Niger. These migrations often result in large urban slums that are home to significant numbers of the unemployed.

More recently, dust was on the agenda at a trilateral summit attended by South Korea, Japan and China. They were widely encouraged by development agencies from the middle of the s in the Sahel area of Africa.

This absence of investment contributes to the marginalisation of these zones. Vegetation plays a major role in determining the biological composition of the soil. The residue from pruned trees can be used to provide mulching for fields thus increasing soil water retention and reducing evaporation.

So some of the creations or cultural beliefs of earlier civilizations are simply lost forever, never to be recreated — though there certainly are some things that are relatively constant, and seem to reoccur regularly.

Generally such periods see the disintegration of cultural values, complex economic systems, technological systems, complicated urban infrastructure, ethnic identities, and often of writing systems and languages as well. For some, there are numerous barriers to their implementation.

This has destroyed many villages in its path. With the loss of their environment, most simply disappear — or, at the least, see a huge drop in their genetic diversity.

Extinction Species extinction is one of the most prominent effects of desertification. Eventually the land collapses completely and turns to what is more or less desert — able only to support population sizes considerably lower than those that were there before.

Desertification Top 10 List

This is driven by a number of factors, alone or in combination, such as drought, climatic shifts, tillage for agriculture, overgrazing and deforestation for fuel or construction materials. This paper reviews recent studies of desertification in different regions of arid and semiarid China.

Some countries have developed Biodiversity Action Plans to counter its effects, particularly in relation to the protection of endangered flora and fauna.

In other words — the four horsemen.Oct 24,  · For years, China’s deserts spread at an annual rate of more than 1, square miles. Many villages have been lost. Climate change and human activities have accelerated desertification.

China says government efforts to relocate residents, plant trees and limit herding have slowed or reversed desert growth in some areas.

Creeping desertification in China is swallowing thousands of square kilometres of productive soil every year. It’s a challenge of gigantic and unprecedented proportions.

The rate of desertification increased throughout the second half of last century and, although this trend has since stabilised, the situation remains very serious.

Desertification is a type of land degradation in which a relatively dry area of land becomes increasingly arid, and the Loess Plateau of China, where population was dense. Areas affected. Sun, Moon, and large telescopes above the desert Drylands.

Read "Desertification in China: An assessment, Earth-Science Reviews" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. Analysis of desertification in China In order to combating the severe increase in sandy land and a distinct trend of woodland transforming to grassland which would decrease.

Based on this analysis, the area of desertification in in arid and semiarid China totaled 38, 57, 00 km 2 (Wang et al.,Wang et al.,Wang et al., a), located at the margins of deserts and in some steppe regions.

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An analysis of desertification in china
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