What is Desertification? What is land degradation? What are the reasons behind it? How is it affecting the world? Know more here. Show
What is land degradation?It is a process in which the biophysical environment is affected negatively by the combination of natural and human-induced processes acting upon the land. Land degradation is caused by multiple forces, including extreme weather conditions, particularly drought. It is also caused by human activities that pollute or degrade the quality of soils and land utility. It negatively affects food production, livelihoods, and the production and provision of other ecosystem goods and services.
What is Desertification?Desertification is a type of land degradation in which a relatively dry region becomes increasingly arid, typically losing its water bodies as well as vegetation and wildlife. What are the causes of desertification?Land degradation has accelerated during the 20th and 21st centuries due to increasing and combined pressures of agricultural and livestock production (over-cultivation, overgrazing, and forest conversion), urbanization, deforestation, and extreme weather events such as droughts and coastal surges, which salinate land.
Impact of desertification:Desertification and land degradations are major threats to agricultural productivity in the world and water and quality air. It can affect human health through complex pathways. As land is degraded and deserts expand in some places, food production is reduced, water sources dry up and populations are pressured to move to more hospitable areas.
Impact on human health:
Global scenario:Sahel region, North Africa
Ningxia Hui, China
Murray-Darling Basin, Australia
Desertification in India:Six states in northeastern India were among the top 10 places in the country with the highest rates of desertification between 2003 and 2018, according to a recent report. These are Mizoram, Arunachal Pradesh, Assam, Tripura, Nagaland, and Meghalaya. Punjab, Delhi, Jammu and Kashmir, and Uttarakhand in northern India also witnessed some of the highest rates of desertification, the most recent estimates by the Space Applications Centre under the Indian Space Research Organisation (ISRO). Desertification and Land Degradation Atlas: It is a document published by ISRO which shows that Land Degradation and Desertification have increased significantly in recent years. The Atlas provides a state-wise area of degraded lands for the time frame 2018-19. It also provides the change analysis for the duration of 15 years, from 2003-05 to 2018-19. Recently, the Indian Prime Minister delivered a keynote address at the UN “High-Level Dialogue on Desertification, Land Degradation, and Drought” via video conference. United Nations Convention to Combat Desertification (UN-CCD)Established in 1994, the United Nations Convention to Combat Desertification (UNCCD) is the sole legally binding international agreement linking environment and development to sustainable land management. The Convention addresses specifically the arid, semi-arid, and dry sub-humid areas, known as the drylands, where some of the most vulnerable ecosystems and peoples can be found. India is a signatory to the United Nations Convention on Combating Desertification (UNCCD). The country is committed to combating desertification and land degradation and intends to achieve land degradation neutral status by 2030. MoEF&CC is the nodal Ministry for the implementation of the UNCCD. The status of India’s desertification and land degradation is an important contribution to India’s report to the UNCCD. Schemes by the Indian Government against Desertification:Integrated watershed management system:
It aims to restore ecological balance by harnessing, conserving, and developing degraded natural resources with the creation of Rural Employment. Now it is subsumed under Pradhan Mantri Krishi Sinchai Yojana which is being implemented by NITI Ayog. Desert Development Programme: It was launched in 1995 to minimize the adverse effect of drought and to rejuvenate the natural resource base of the identified desert areas. It was launched for hot desert areas of Rajasthan, Gujarat, Haryana, and cold desert areas of Jammu & Kashmir and Himachal Pradesh. National Afforestation Programme: It has been implemented since 2000 for the afforestation of degraded forest lands. It is being implemented by the Ministry of Environment, Forest, and Climate Change National Action Programme to Combat Desertification: It was prepared in 2001 to address issues of increasing desertification and to take appropriate actions. National Mission on Green India: It was approved in 2014 to protect, restore, and enhance India’s diminishing forest cover with a deadline of 10 years.
India is working hard to achieve its national commitment to Land Degradation Neutrality (LDN) (SDG Goal target 15.3). LDN is a state whereby the amount and quality of land resources, necessary to support ecosystem functions and services and enhance food security, remains stable or increases within specified temporal and spatial scales and ecosystem. What can be done to combat desertification?Some of the techniques that may help improve the consequences of desertification in croplands and woodlands include:
The inclusion of a specific target under SDG 15 (‘Life on Land), to achieve land degradation neutrality by 2030, reflects the commitment of the international community to make progress on land restoration and reversing land degradation. Over 120 countries have already committed to setting voluntary targets to achieve land degradation neutrality. Potential Mains question:
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