> ## Documentation Index > Fetch the complete documentation index at: https://lss-lab.kankyo.tohoku.ac.jp/llms.txt > Use this file to discover all available pages before exploring further. # Our approach > How we frame land-system research: social–ecological systems, geospatial evidence, and multiple scales. ## Land systems as social–ecological systems We study **land systems** — coupled systems in which land use is the main link between people and nature. This framing matters practically: it pushes us to look at interactions and feedbacks rather than at land cover alone, to follow dynamics through time rather than compare snapshots, and to trace connections across scales, since a decision in one place often changes land use somewhere else entirely. ## Evidence first Our default is quantitative, spatially explicit evidence built from open data. In practice that means satellite image time series, national statistical and geospatial datasets, and published global products — analysed reproducibly so that results can be checked, extended, and reused. ## Working across scales Cities and landscapes, where exposure and adaptation are experienced. Where land-use policy is made and scenarios are most decision-relevant. Where displacement, telecoupling, and long-run trends become visible. ## Principles * **Open and reproducible.** We favour open data and open tools, and we release code and derived datasets where licensing allows. * **Decision-relevant.** We aim for results that can inform conservation, urban planning, and climate adaptation, not only the literature. * **Collaborative.** Land-system questions are interdisciplinary by nature; we work with ecologists, planners, social scientists, and modellers. [See the data and methods we use →](/en/research/methods)