According to the Forest Department officials, 7.5 lakh saplings will be planted in the current financial year besides free distribution of four lakh saplings.
The depleting green cover and increasing levels of pollution has added to the woes of Delhi government which blames rapid urbanisation for it.
Delhi's green cover reduced to 296 sq km in 2011, which is 19.97 per cent of the total geographical area of approximately 1483 sq km, as compared to 2009 when it was 299.58 sq km forming over 20 per cent of the total area, according to a Forest Survey of India report.
"It is a major challenge to carry on with the developmental work and maintain the green cover simultaneously. The increasing population demands development and urbanisation posing pressure on the green cover. Although the department is doing the required plantation it cannot ensure that they are provided with land," said A K Shukla, Chief Conservator of Forests.
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Further, the growing pollution, according to the forest department officials, is a threat to wildlife.
"There is a possibility that there will be no increase in the population levels of the indigenous wildlife with the increasing levels of pollution and climate change and they can become extinct," said, Shukla adding the census has not yet been done.