LINDGC is dominated by the Bicol, River Basin, whose flood plain of some 800 sq. kms. is one of the major rice bowls of the country. Aside from the broad alluvial plains of the Bicol River, other landforms include coastal plains and wetlands, foothills and mountains, and volcanic cones. The soils that are either deltaic deposits or volcanic in origin are generally fertile and suited for a wide range of agricultural crops. Other land resources are its extensive mineral deposits, both valuable metals (gold, copper, silver, etc.) and non-metallic (limestone/marble, guano, cement raw materials, ceramic clay, etc.)

   Most of the areas belong to Type IV climate, characterized by even rainfall throughout the year. Temperature is generally cool and wind velocity averages at 8 knots. The area is located on the typhoon belt and experiences this hazard at the average of two major typhoons per year. Typhoons accompanied by heavy rainfall usually create massive flooding of the central plains of the Bicol River. Areas most affected are the vicinity of Naga City, Baao, and Polangui-Oas area.

   Vegetative cover of the corridor's land areas includes public forest and national parks, pastures and grasslands and agricultural croplands. Significant portions of the forestlands are degraded due to over logging and conversion to agricultural uses. Other natural resources, which have been reduced and continue to be a risk of diminution, are the mangroves and coastal resources, many of which have lost their productive natural state due to siltation or conversion to other uses.