(a) B.K. Roy Burman's concept of 'Buffer Zone' 10 (b) Describe ILO's Convention No. 169 (1989) on Indigenous and Tribal people…

(a) B. K. Roy Burman's concept of 'Buffer Zone'

B. K. Roy Burman worked on tribal demography, forests and land at the Office of the Registrar General and later as a policy adviser. He used the idea of a "buffer zone" for the transitional belt between core tribal habitats and the densely settled, non-tribal plains and towns.

• The frontier of contact: in this intermediate zone, such as the foothills of the North-East, the fringes of the Chota Nagpur plateau or forest-edge villages, tribal and non-tribal people meet through markets, labour, migration and administration.
• Two functions: the zone can act as a cushion that slows sudden cultural shock and land loss, or it can become the front line of exploitation by traders, moneylenders and settlers.
• Policy implication: development in the buffer zone should be regulated and phased. That means protecting land, controlling in-migration (compare the Inner Line Permit in the North-East) and giving tribal institutions a say. This allows integration by choice rather than assimilation by force.
• Identity: buffer zones produce hybrid identities, bilingualism and new occupations. They show that tribes are not isolated but in constant interaction, a theme of Roy Burman's argument for recognising tribal peoples as indigenous communities with rights.

The concept has parallels in the core–buffer–transition zoning of biosphere reserves, where people's use of resources is regulated rather than excluded.

(b) ILO Convention No. 169 (1989) and India

The Indigenous and Tribal Peoples Convention, 1989 (No. 169) revised the earlier ILO Convention No. 107 (1957). C107 had an integrationist approach, seeing tribes as groups to be absorbed into the nation.

• Self-identification: it is the basic criterion of who is indigenous or tribal.
• Consultation and participation: governments must consult these peoples in good faith, through their own institutions, on measures that affect them, and they have the right to set their own development priorities.
• Land: it recognises ownership and possession of traditionally occupied lands and rights to natural resources. Relocation needs their free and informed consent, with return or compensation.
• Culture and services: it protects customary law, languages, education and health services, and bars discrimination in employment.

India's status: India ratified C107 in 1958 but has not ratified C169; about two dozen countries, mostly in Latin America, have done so. ILO conventions are ratified rather than "signed".

• "All Indians are indigenous": India argues that the whole population is indigenous, so a separate category of "indigenous peoples" does not apply. It treats Scheduled Tribes as a constitutional category instead.
• Development concerns: it has reservations about consent requirements that could restrict land acquisition and development.
• Domestic safeguards: it points to the Fifth and Sixth Schedules, PESA (1996) and the Forest Rights Act (2006). In 2007 India voted for the UN Declaration on the Rights of Indigenous Peoples, which is not binding.
• Criticism: critics argue that ratifying C169 would strengthen consultation rights, which are often diluted in practice.

(c) Agricultural practices of the Apatani

The Apatani of the Ziro valley (Lower Subansiri district, Arunachal Pradesh), about 1,500 m above sea level, practise permanent wet-rice cultivation, unlike the shifting cultivation (jhum) of neighbouring Nyishi and other groups.

• Terraced rice fields: level plots are fed by an intricate network of canals and channels diverted from the Kale river and hill streams, with bamboo pipes and outlets regulating water from plot to plot.
• Paddy-cum-fish culture: fish are raised in the flooded fields, and millet (Eleusine) is grown on the bunds. All this is done without draught animals or machines, using manure, crop residues and household waste to keep the soil fertile.
• Integrated land use: gardens of vegetables and maize surround the houses, and clan and village forests of bamboo and blue pine supply timber and fuel. These are carefully planted and regenerated.
• Institutions: land is owned privately, by clan and by community. The traditional council (bulyang) regulates water sharing, disputes and communal labour, with work groups (patang) based on age and neighbourhood. Festivals such as Myoko and Dree mark the agricultural cycle.

Christoph von Fürer-Haimendorf's The Apa Tanis and Their Neighbours (1962) described this system as a remarkable achievement of a pre-industrial people. The Ziro valley, with its high productivity and sustainability, has been on UNESCO's tentative World Heritage list since 2014.

(d) Status of Sixth Schedule Areas

Under Articles 244(2) and 275(1), the Sixth Schedule provides for the administration of tribal areas in Assam, Meghalaya, Tripura and Mizoram through Autonomous District Councils (ADCs). There are ten such councils:

• Assam: Bodoland Territorial Council, Karbi Anglong and Dima Hasao.
• Meghalaya: Khasi, Jaintia and Garo Hills.
• Tripura: the Tripura Tribal Areas ADC.
• Mizoram: the Chakma, Lai and Mara councils.

Structure and powers

• Composition: each council has up to 30 members (26 elected and 4 nominated by the Governor). The Bodoland council is larger.
• Laws: councils make laws on land (other than reserved forest), forest management, shifting cultivation, village administration, inheritance, marriage and divorce, and social customs. These need the Governor's assent.
• Courts and finance: they set up village and district courts for disputes among Scheduled Tribes, and they levy land revenue and certain taxes and license money-lending and trading by non-tribals.
• The Governor's role: the Governor can create or change autonomous districts, direct that Acts of Parliament or the state legislature do not apply or apply with changes, and dissolve a council on the recommendation of a commission.

Current status

• Autonomy and its limits: the Schedule has protected land and customs and given political space to groups such as the Bodos, Karbis and Garos, as seen in the Bodo Accord of 2020.
• Weaknesses: councils suffer from dependence on state funds, overlapping powers with state governments, few women members, and irregular elections.
• Proposed reform: the Constitution (125th Amendment) Bill, 2019, pending in Parliament, proposes elected village and municipal councils, more finances through the Finance Commission, and reservation for women.
• Demands for extension: groups elsewhere have sought Sixth Schedule status, notably in Ladakh, showing that the model is still seen as the strongest form of tribal self-rule.

(e) Constitutional safeguards for Backward Classes

"Backward classes" in the Constitution mainly means the socially and educationally backward classes (SEBCs, or OBCs).

• Article 15(4) (First Amendment, 1951) allows special provisions for their advancement. Article 15(5) (93rd Amendment, 2005) allows reservation in educational institutions, including private unaided ones except minority institutions.
• Article 16(4) allows reservation in public posts for backward classes not adequately represented. Article 335 requires that the efficiency of administration be kept in view.
• Article 46, a Directive Principle, directs the state to promote the educational and economic interests of weaker sections.
• Article 340 allows the President to appoint a commission to investigate their conditions. This produced the Kalelkar Commission (1953–55) and the Mandal Commission (1979–80), whose 27% reservation was implemented in 1990.
• National Commission for Backward Classes: made a constitutional body under Article 338B by the 102nd Amendment (2018).
• Article 342A: the President notifies the central list of SEBCs. The 105th Amendment (2021) restored the states' power to keep their own lists.

Judicial principles. Indra Sawhney (1992) upheld OBC reservation but required the exclusion of the "creamy layer" (currently an income limit of ₹8 lakh a year) and set a general 50% ceiling. The 103rd Amendment (2019) added a separate 10% EWS quota for those not covered by other reservations, upheld in Janhit Abhiyan (2022). The Rohini Commission (report 2023) examined sub-categorisation of OBCs to spread benefits more evenly.