reforestation and man- agement contracts generally held steady over the years, whereas conservation payments fell (e.g., >$20 million in 1997; almost $12 million in 1999; and <$4 million in 2001).spatial allocation of psa contracts the psa contracts were distributed broadly across ecolog- ical life zones (table 1). it contracts means all arrangements and agreements (including those currently being negotiated) under which any third party (including, without limitation, any source code deposit agents) provides any element of, or services relating to, the it system, including development, creation, leasing, hire purchase, licensing, maintenance and services agreements.