Read the passage below carefully and determine whether the statement that follows is True or False based on logical deduction from the text.
Passage:
In the Mandara Mountains along the Nigeria-Cameroon border, the Sukur Cultural Landscape stands as a historic testament to indigenous soil conservation and water management. For centuries, Sukur farmers sculpted steep granite slopes into terraced fields, utilizing stone retaining walls to capture rainwater and prevent soil erosion during torrential seasonal downpours. However, recent economic shifts have drawn younger generations away from agricultural upkeep toward unregulated artisanal gold mining in nearby river valleys. While mining yields immediate cash returns, it leaves vast tracts of land pocked with pits and deprives the traditional terraces of their required annual maintenance. Consequently, heavy rains now frequently breach neglected stone embankments, washing away topsoil that took generations to accumulate. Regional developmental reports indicate that agricultural yields on unmaintained terraces have dropped by nearly forty percent over the past decade. Environmentalists warn that unless communal labor structures for terrace repair are revived, the region faces both an ecological crisis and the irreversible collapse of a heritage-based food system.
Statement:
The decline in terrace agricultural productivity in Sukur is indirectly caused by the shift of young laborers into artisanal mining.
Answer: Answer