EFCT: Environmental Footprint Comparison Tool.  A tool for understanding environmental decisions related to the forest products industry.  Chlorinated Compounds. headerlink
Effects of decreased release of chlorinated compounds on wood use

Wood represents one of the primary costs associated with production of chemical pulps, so it is crucial to use wood in the most efficient manner possible. In kraft pulping, it takes about 2.3 dry kg wood to produce 1 dry kg fully bleached pulp, a yield of about 43%. The 57% yield loss occurs primarily during cooking (pulping) and to a lesser extent during bleaching, as the lignin and other non-fibrous wood components are removed and the pulp is brightened.

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More information:

Pulp yield for ECF and TCF pulps

Effects of pulping on wood requirements

Effectiveness of chlorine-based vs. oxygen-based bleaching