{"thcode":2,"term":{"code":629,"name":"land use change","parent":548,"scope":"Effect of changing land use patterns on ecological systems."},"uf":[{"name":"urbanization","usewith":false}],"bt":[{"code":548,"name":"human impacts","parent":1174,"scope":"The effects, intentional or unintentional, beneficial or harmful, direct or indirect, which human activities have upon the environment and living things."},{"code":1174,"name":"topics","parent":1,"scope":"Themes, subjects, and concerns for which USGS information resources are relevant."},{"code":1,"name":"Categories","parent":null,"scope":"Thematic terms for categorizing information resources.  This thesaurus is intended to support finding and understanding scientific information."}],"nt":[{"code":2033,"name":"habitat fragmentation","parent":629,"scope":"Disruption of once-continuous natural habitats by human activities such as agriculture, urbanization, resource extraction, and the construction of roads, railways, fences, and pipelines."}],"rt":[{"code":246,"name":"desertification","parent":168,"scope":"The alteration of arable land to dry, barren land due to prolonged drought or the deleterious effects of human intervention including overgrazing, overpopulation, or destructive agricultural practices."},{"code":311,"name":"ecology","parent":650,"scope":"Study of the relations between living plants and animals and their environment."},{"code":447,"name":"geography","parent":291,"scope":"Study of the earth's landforms, topography, and climate, the distribution of flora and fauna, and the distribution, culture, and activities of human populations."},{"code":628,"name":"land use and land cover","parent":1174,"scope":"The vegetation, water, natural surface, and cultural features on the land surface."},{"code":1075,"name":"social sciences","parent":1019,"scope":"Sciences concerned with the structure and interrelationships of human societies, human institutions and organizations, and human culture over time."}]}