Comprehensive Demarcation of"Three Zones and Three Lines":Phenomenon Analysis,Technical Logic,and the Nanjing Experience
To align with the territorial spatial planning reform,facilitate multiple plan integration,enhance the authority of spatial plans,and achieve the goal of high-quality development,it becomes imperative to coordinate the demarcation of three control lines on territorial spatial master plans,promote the modernization of spatial governance,and enhance governance capacity.In various localities,lack of under-standing of overarching policy documents has resulted in poor coordination of three control lines.For example,the mechanical implementation of farmland protection mandates has led to the fragmentation of cultivated land,the inability to adjust eco-logical red lines gives has caused management difficulties,and the inappropriate drawing of urban growth boundary has resulted in questionable urban size,form,and layout.To solve these problems,the paper proposes to establish a scientific methodology for delineating three zones and three lines.The core rationale is to en-sure coordination among the three lines and various elements of territorial spatial master plans.In addition,the paper introduces exemplary practices in Nanjing,em-phasizing its scientific delineation of three control lines,adherence to ecological and systematic views,optimization of spatial structure,and a scientific projection of ur-ban scale.These practices serve as a practical reference for spatial optimization in territorial spatial planning.
"three zones and three lines"territorial spatial master planoverall coor-dinationtechnical rationale
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