中文摘要：

城市发展是影响生态系统物质循环和能量流动的主要因素之一,研究其对植被净初级生产力（net primary productivity,NPP）的影响,对于区域土地利用的合理规划具有重要意义。本文基于2000-2010年武汉城市圈土地利用数据和NPP数据,分析研究武汉城市圈建设用地扩张及其对NPP的影响。结果表明：1）2000-2010年武汉城市圈建设用地面积持续增加,研究期间建设用地面积增加了57.88%（即1 459.44 km2）;2）区域平均NPP由919.55g C/（m2·a）下降为702.95 g C/（m2·a）,NPP总量由2 317.66 Gg C/a增加到2 797.91 Gg C/a,增加率为20.72%;3）武汉城市圈的9个市中,建设用地扩张较大的区域主要集中在武汉市及周边地区,2000-2010年武汉市建设用地增加率为80.73%,NPP总量增加了30.53%,由于建设用地平均NPP降低了27.78%,武汉城市圈建设用地NPP总量增加量相对较少。

英文摘要：

Urban development is one of the main factors that affect material circulations and energy flows in ecosystems. Studies on how urban development influences net primary productivity （NPP） are necessary for science-based planning of regional land use. Based on data of land uses and NPP in Wuhan Metropolitan Area from 2000 to 2010, the impacts of construction land expansion on NPP in Wuhan Metropolitan Area were assessed. The construction land in Wuhan Metropolitan Area increased by 57.88% （1 459.44 km2） from 2000 to 2010, and the average NPP decreased from 919.55 g C/（m2·a） to 702.95 g C/（m2·a） while total NPP increased from 2 317.66 Gg C/a to 2 797.97 Gg C/a with an increase rate of 20.72%. Among the nine cities in Wuhan Metropolitan Area, Wuhan and its surrounding area expanded fastest in their construction land. During the decade, the construction land in Wuhan increased by 80.73%, while the total NPP raised by 30.53%. Since the average NPP in the construction area was reduced by 27.78%, total NPP in Wuhan Metropolitan Area only increased marginally.