Agricultural land degradation deforestation and over cultivation

In former times, most farmers accepted the situation into which they were bore, even if it was one of relative poverty.

Agricultural land degradation deforestation and over cultivation

Research based on sample studies to confirm this is desirable. A clear example is seen in tee production in the hill lands of Sri Lanka. Restoration of Saline agricultural land Soil salinity describes the soluble salt content of soil. When combined with increases in rural population, land shortage has led to decreases in the already small areas of agricultural land per person in six of the eight countries, including all in the humid zone. There is no substitute of inorganic fertilizers therefore integrated use of organic and inorganic fertilizers should be adopted. In a study conducted by Bationo and Ntare, in Niger found out that legume—millet rotation with 30 kg Nha maintained a high level in soil organic carbon pool and sustained crop yields. All of this effort will be nullified, and in places reversed, if it is not accompanied by a reduction in rate of growth of population. There has been a steady increase in the ratios of nitrogen to phosphorus, and nitrogen to all other nutrients, in the region. There are four key aspects to a restoration project: a Recognizing cause and effect and targeting the cause; b Site stabilization; c Environmental reconstruction d Monitoring Cause and effect — target the cause: For every effect of degradation, there is an underlying cause.

Climate change[ edit ] Significant land degradation from seawater inundationparticularly in river deltas and on low-lying islands, is a potential hazard that was identified in a IPCC report.

Non-adoption of soil-conservation management practices Under arable use, management practices are needed to check water erosion on all sloping lands.

The most severely affected areas include highlands, mountains areas under agriculture. The extent of deforestation considered as a type of degradation has been summarized in Chapter 5, Section Deforestation and forest degradation.

The fencing and revegetation may slow the rate of decline, but the site will be unstable and continue to degrade until the water management issues are addressed.

land degradation causes

In the subsequent sections 4. For reasons outlined above, poor farmers are led to clear forest, cultivate steep slopes without conservation, overgraze rangelands, make unbalanced fertilizer applications, and the other causes noted above. FIGURE 9 - Causal nexus between land, population, poverty and degradation The non-sustainable management practices lead to land degradation.

Two views from outside the region may be added, from the most recent FAO and World Bank reviews: "A lack of control over resources; population growth; a lack of alternative avenues of livelihood; and inequity are all contributing to the degradation of the regions's [Asia] resources.

Causes and effects of land degradation

The extent and nature of the reconstruction works will depend on what you are trying to achieve for the site. In this context, restoration is important to sustain soil fertility and agronomic productivity Tiessen et al. In the subsequent sections 4. These two factors combine to explain the degree of vulnerability. The species used are mostly Eucalyptus, Casuarina sp. Overcutting of vegetation Rural people cut natural forests, woodlands and shrublands to obtain timber, fuelwood and other forest products. Factors comprise agents of degradation related to natural or anthropogenic drivers such as climate, physiography, socio-economic or cultural parameters. Land degradation and desertification What is land degradation? Restoration of Saline agricultural land Soil salinity describes the soluble salt content of soil. Techniques for restoration of degraded agricultural land can grouped into two broad categories; agricultural conservation techniques and soil management techniques. Stabilization is the minimum level of restoration that should be undertaken in any degrading landscape to prevent the situation from becoming worse. However, such tenants lack the incentive to maintain the land in good condition, being interested mainly in the immediate harvest. Where phosphate deficiencies have been recognized and counteracted by phosphatic fertilizer, deficiencies of other nutrients, including sulphur and zinc, have been reported. This refers to increasing pressure of population on land, resulting in small farms, low production per person and increasing landlessness.

Underlying causes of degradation There are more basic reasons underlying the reasons for land degradation outlined above. Agricultural Restoration Techniques a Crop management: Wind and water erosion reduce by good crop management practices.

Most restoration projects will aim to achieve one of the following objectives: a Improve agricultural production. Actions to protect health by protecting the environment.

effects of land degradation on the environment

It leads directly to decreases in the quantity and quality of the vegetation cover.

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Land Degradation and Deforestation