Threats to the forests of Kerala
Fire is one of the major threats facing the forests of Kerala.
People who are engaged in grazing livestock often burn the area to get fresh shoots for their cattle,
during lean season. Apart from this, those who are involved in illicit activities such as ganja cultivation, poaching, tree felling, NTFP collection and very often the ignorant tourists and pilgrims are also responsible for
big forest fires.
The effect of fire depends on the type of vegetation, frequency and intensity of fire and
season of burning. Fire causes extensive damage in deciduous forests and grasslands due to heavy fuel load.
Only some weeds manage to establish a strong foothold even after severe fire with the help of fire resistant adaptations. The direct impacts of fire are change in vegetation composition and physical properties of soil, soil erosion and loss of habitat.
Grazing by cattle in forest, although not rampant as else where in the
country, is identified as a threat to biodiversity in Kerala.
The grazing not only removes the biomass and compete with wild herbivores, but also
spread contagious diseases to wild animals. The trampling leads to soil erosion and changes the physical properties of soil. Intensive grazing will lead to
domination of a single or a few species, changing the species composition of natural vegetation. Cattle grazing speeds up the invasion of weeds.
Collection of Fire wood
Firewood collection directly poses threat in the form of removal of biomass, which affects microhabitat of flora and fauna, and indirectly leads to extensive
fire and other illegal activities. The proximity of settlements to the forests is the main
factor, which determines the intensity of firewood collection. The firewood
collection leads to degradation of habitats which subsequently alters the
species composition and vegetation types. It is roughly estimated that 0.8 million cubic meters
of firewood is illegally removed from the forest annually. Along with dead and wind fallen
trees, standing trees and poles are also removed as firewood.
Tree felling is one of the severe threats to biodiversity conservation in the state. The primary effect of tree felling on bio diversity is the removal of biomass and loss of habitat for many epiphytic and arboreal species. Tree felling leads to soil erosion and change
of the soil properties. In some cases people involved in tree falling set fire
to the forests. The opening up of canopy due to felling changes the microclimate and invite weeds to colonize and in turn changes the structure of vegetation. Apart from the direct impact of loss in terms of money to the state, the indirect impact of felling is the constant conflict between the administrative staff and the people involved in this illegal activity.
Kerala is one of the most land hungry State in India with lowest per capita land holding.
Organised encroachment of forest land might have started as early as 1950s.
Initially the policy of government was to allot forest land for schemes; like ‘grow more food’, ‘arable land’ etc. The direct impact of encroachment is habitat loss, besides the existence of constant threat on the forests by the fringe people. In addition to their involvement directly in the illegal activities they provide shelter for the unscrupulous offenders of the plains who
are engaged in all kinds of illegal activities. The policy of the State Government is that
all encroachments after 01-01-1977 will be evicted.
A major problem associated with the conservation of wild animals especially the herbivores like elephants in India is that of crop depredation and
man-slaughter. Animals such as elephants, gaur,
sambar, wild boar and birds like peacock, cause extensive damage to the crops.
This phenomenon has registered significant increase in recent years due to habitat fragmentation and degradation of natural forests and corridors. Almost all the
Protected Areas and Non-Protected Areas of Kerala contain a large number of settlements either inside or on the
periphery. This leads to degradation of surrounding habitats. The traditional tolerance among the people who live inside the forests or its adjacent
areas are fast disappearing and people have become increasingly antagonistic. As a result, the people tend to kill the animals either by poisoning or
by other means, like keeping crackers in fruits, etc.. This problem is very
severe in northern Kerala where cultivation of paddy is extensive.
At present Kerala Forest Department provides compensation for the crop and property damage, human casualities and cattle
loss caused by the scheduled animals like elephant, tiger, leopard, gaur, etc. Providing compensation is not a long –term solution. In some areas where conflict is rampant, physical and psychological barriers are being provided. However, these efforts are found to be effective for only
a certain period and become ineffective in due course.
The abundance of wild animals and high demand for their products in the
clandestine, market pose threat to wild animals. Hervibvores like gaur,
sambar, chital etc are being poached for their meat. A lot of other not so spectacular species of animals ranging from reptiles to birds as well as plants and medicinal herbs are all part of the illegal wildlife trade. The major impact of poaching is species loss and change in their demography apart from extensive fire and other illicit activities.
Illegal and unsustainable/unscientific collection of Non-Timber Forest
Non-Timber Forest Produce (NTFP) collection is one of the major livelihoods of
the local people. The NTFP consist of a variety of products, which are sources of food,
fibre, manure, construction materials, cosmetics and cultural products. The users of NTFP range from local individuals to multinational companies. With the development of modern techniques, the number of products and uses based on NTFP has increased by many folds. This market driven utilization became instrumental
in their unsustainable exploitation and resulted in degrading the natural vegetation. Studies indicate NTFP collectors are amongst the lowest-income groups in India, often receiving a mere 5-20% of
the value for their products (SPWD,1993). About 69% of the forest based employment is related to
The forests of Kerala are very rich in NTFP including edible products, medicinal plants,
toiletries, tans, dyes, gums, resins, rattan, bamboo, grasses and animal products. Although 500 species of NTFP are available in the forests of Kerala, about 120 items are listed as
commercially important by the Kerala Forest Department. But as per record more than 200 species are being collected. Considering its widespread nature and
higher prioritization, the threat needs to be tackled immediately to conserve biodiversity.
Even though mining is not a severe threat to the forests of Kerala. Sand mining is prevalent in the central and southern parts of Kerala. It is a threat to the stability of a landscape, which results in land sliding and lowering of water table. The removal of habitat will endanger the survival of riparian species since most of them occupied a very narrow habitat niche. At the same time regulated sand mining would help in keeping the health of the streams and reservoirs. Indiscriminate sand mining
in some rivers systems in the state is posing severe threat to the stability of bridges and banks. Transportation of sand through the forests and other related activities pose severe threat to the
Mass Tourism and Pilgrimage
Mass Tourism and Pilgrimage are considered to be one of the major and increasing threats to biodiversity conservation. Approximately 13 million people visit forest areas annually either as
pilgrims or visitors. Among all the Protected Areas in India, Periyar Tiger Reserve receives a maximum number of tourists.
The large influx of people into the forests in short duration makes severe changes to habitat.
The major impact of tourism and pilgrimage is littering and over-utilization of resources such as soil erosion, fire, disturbance to wild animals for feeding, ranging etc are also reported due to a large number of pilgrims and unruly behaviour of visitors.