In the 1980s, the hilly Qianyanzhou region in Jiangxi Province, southern China, faced severe soil erosion due to deforestation and unsustainable farming practices. Fertile red soil was being washed away causing crop yields to tumble.
But a remarkable change has taken place in the last 30 years thanks to a government-backed land-use plan which has seen the upper hills reforested, citrus orchards planted on moderate slopes, and rice paddies in valley bottoms. Within a few years, this mosaic of sustainable land use was yielding higher incomes. Biodiversity and environmental quality, as well as the microclimate, improved.
In early November 2018, the head of UN Environment’s freshwater, land and climate branch, Tim Christopherson, together with his colleague Xiaoqiong Li, visited several sites in the area to better understand how large-scale ecological restoration works.
Huimin Wang, the director of an ecological research station in Ji’an, Qianyanzhou region, briefed UN Environment on the problem and the centre’s role in restoring the landscape.
“Thirty years ago, this area was denuded of trees and vulnerable to landslides. Erosion gullies washed fertile red soil away,” says Wang.
“We set up this ecological research station to work out how best to restore the land. We brought together experts from around the world, including from the Federal Agency for Nature Conservation in Germany.”
Research focused on forest structure optimization and how to improve ecosystem services from the forest; the structure and functions of forest ecology; carbon, water and nutrient cycling in forest ecosystems under climate change; and the Qianyanzhou upgrade model to be achieved by improving ecological and economic benefits in the watershed.
Another key element of the restoration process was agroforestry, supported by the local government: farmers continued to grow cash crops such as peanuts, sesame and vegetables among the restored orchards, and breed Silkie chickens (black-boned with fluffy plumage) in orchards and forest plantations. This ensured economic returns in the early stages of the project and helped improve soil fertility. As well as building dams and ponds, government agencies provided loans to households to help them get started.
According to the Food and Agriculture Organization of the United Nations, about 21.9 per cent, or 206,861,000 hectares of China, was forested in 2010. In just one decade, the Qianyanzhou restoration drive has increased China’s total forest area by 74.3 million hectares. Qianyanzhou’s forest coverage has increased from 0.43 per cent to nearly 70 per cent.
Qianyanzhou restoration efforts have helped the region and the country take a big step towards implementing the UN Sustainable Development Goals, in particular Goals 1 (No Poverty), 6 (Clean Water and Sanitation), 8 (Good Jobs and Economic Growth), 12 (Responsible Consumption), and 15 (Life on Land), as well as the Bonn Challenge and the New York Declaration on Forests, all of which fall under UN Environment’s programme of work.
Forests are a major, requisite front of action in the global fight against catastrophic climate change, thanks to their unparalleled capacity to absorb and store carbon. Forests capture carbon dioxide at a rate equivalent to about one-third the amount released annually by burning fossil fuels. Stopping deforestation and restoring damaged forests, therefore, could provide up to 30 per cent of the climate solution.
The United Nations Collaborative Programme on Reducing Emissions from Deforestation and Forest Degradation in Developing Countries (The UN-REDD Programme) was launched in 2008 and builds on the convening role and technical expertise of the Food and Agriculture Organization of the United Nations, the United Nations Development Programme and UN Environment.