Climate change effects on groundwater resources are, therefore, closely linked to other global change drivers, including population growth, urbanization and land-use change, coupled with other socio-economic and political trends.

UNESCO: Climate Change Effects on Groundwater Resources: A Global Synthesis of Findings and Recommendations | United Nations Educational, Scientific and Cultural Organization

It means the 1939 kick seen in the nitrate "curve" above also incorporates some the delayed response from the land-use change brought about by the introduction of arable subsidies in 1917.

BBC: Thames archive reveals long nitrate rise

Science plays an important role in our response to global issues such as climate change, the hydrological cycle, biodiversity loss, natural hazards and human-induced disasters, population growth, land-use change, migration and urbanisation.

UNESCO: UK National Commission for UNESCO :: Environmental Science

And that's at the same time that we're going to be hitting them with a lot of other challenges besides climate change - pollution and land use change, deforestation and fragmenting of the landscape.

NPR: Warming Will Create Micro-Climates, Scientists Say

In other words, a country would decide how its land-use carbon emission or absorption would be likely to change in future, and then to measure actual performance against that baseline.

BBC: Rich countries accused of carbon 'cheating'

In addition, each governments could decide which aspects of land use change to include in its emission reports - which it would then compile and submit to the UN.

BBC: Rich countries accused of carbon 'cheating'