全球变化研究中的中国东北森林—─草原陆地样带(NECT)

陆地生态样带已成为全球变化研究的重要方法和手段。国际地圈－生物圈计划（ＩＧＢＰ）的陆地样带——中国东北森林—草原陆地样带（ＮＥＣＴ）的提出为中国全球变化研究奠定了基础。该样带在东经１１２°～１３０°３０′间沿北纬４３°３０′设置，长约１６００ｋｍ，是一条中纬度温带以降水为驱动因素的梯度，具有良好的植被、土壤、土地利用、气候等环境因素的过渡特征。文章介绍了中国东北森林—草原样带的确定、生态特征及在数据库建设、植被结构和生产力模拟以及遥感研究中取得的初步成果。

NORTHEAST CHINA TRANSECT (NECT) FOR GLOBAL CHANGE STUDIES[WT4 ,5BZ]

Terrestrial transect has become an important and effective method for global change study, especially for global change and terrestrial ecosystems(GCTE), the core project of International Geosphere Biosphere Programme(IGBP). Northeast China transect(NECT) is one of the IGBP terrestrial transects, which will promote the study of global change and terrestrial ecosystems in China. NECT is placed along the latitute 43°30′N, between longtitudes 112° and 130°30′E, and approximately 1600km in length. It is basically a gradient driven by precipitation/moisture located in the Mid latitude of temperate zone. The vegetation zone, soil, land use and climate are charactered along an east westward continuously transitional spatial series. The selection criteria of NECT, the ecological characteristics along NECT, the preliminary studies on modeling vegetation structure and biomass, NPP distribution and remote sensing monitoring will be presented in this paper.