March, we pay more attention to natural and harmonious development of people. Beautiful flowers and, dust dusty days, we cherish even more sunshine, warm heaters, the spring. American scholars at Aldo Leopold, "Sand Rural Yearbook" said: "earth ethics and moral mission is to expand the boundaries of the Community to include soil, water, plants and animals, or by their overall composition : the earth. "the meaning of Arbor Day is not just sik few trees, several species of grass tablets; and World Water Day has once again sounded the water crisis and its ecological deterioration caused by natural disasters led to the alarm. Care for trees and plants, the protection of the living environment has attracted a strong resonance.

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