The Earth is on its way to become inhabitable owing to the increased use of artificial fertilizers like phosphorus and nitrogen which are exceeding the planetary boundaries. The fact has been confirmed by the director of the Center for Limnology at the University of Wisconsin, Madison, Professor Stephen Carpenter who also stated that “We’re running up to and beyond the biophysical boundaries that enable human civilization as we know it to exist.”
At the beginning of Holocene period, the Earth was a much better place to live owing to the human activities that led to refined developments in social, political and religious aspects. Carpenter commented “Everything important to civilisation took place prior to 1914.” Some of the best things then included development of agriculture, the rise and fall of the Roman Empire and the Industrial Revolution and following that era the human activities began the destruction of Earth.
Prof. Carpenter and his team carried out a research regarding the impacts of carbon-driven global warming, including biodiversity loss and sea level rise. Explaining their findings the researchers stated “We’ve (people) changed nitrogen and phosphorus cycles vastly more than any other element. (The increase) is on the order of 200 to 300 percent. In contrast, carbon has only been increased 10 to 20 percent and look at all the uproar that has caused in the climate.”
They also highlighted the unnecessary use of artificial fertilizers for boosting agriculture in the US as the land is already rich in nutrients. Excessive use of fertilizers on a land already rich in nutrients is causing negative impacts and is pushing the civilization beyond safe boundaries. Some countries have land rich in nitrogen and phosphorous while many others have soil lacking these elements and they face difficulty in growing food without artificial fertilizers. Carpenter said “We’ve got certain parts of the world that are over polluted with nitrogen and phosphorus, and others where people don’t even have enough to grow the food they need.”
To avoid upsetting the ecosystem, he has advised the industrial farmers to cut down the overuse of phosphorus and nitrogen. He added “It might be possible for human civilization to live outside Holocene conditions, but it’s never been tried before. We know civilization can make it in Holocene conditions, so it seems wise to try to maintain them.”