At Yichun, a north-eastern city in Heilongjiang province close to the frozen river border with Siberia, the forests were once so dense that the area was known as the Great Northern Wilderness.

• 中国声势浩大的植树计划背后，是难以满足的木材需求带来的灾难性的毁林和生态多样性破坏。黑龙江省的伊春市邻近中俄边界。这里的森林曾十分茂密，被人称作"北大荒"。