LBA-ECO CD-08 Tropical Forest Ecosystem Respiration, Manaus, Brazil

Leaf, live wood (tree stem), and soil respiration were measured along with additional environmental factors over a 1-yr period in a Central Amazon terra firme forest and are provided in this data set as three comma delimited data files. Investigations were carried out at an INPA reserve located along the ZF2 road at km 34 [LBA 34] on two 20 x 2500 m permanent forest inventory plots referred to as the Jacaranda plots (-2.6091 degrees S, -60.2093 degrees W). These long and narrow plots capture ecosystem variation associated with the undulating local topography. Leaf respiration measurements were also made at the tower located at ZF-2 road (km 14 [LBA 14]. Leaf respiration was measured during July and August 2001, woody respiration in August 2000 and June 2001, and soil respiration between July 2000 and June 2001 at 4 to 6-wk intervals.

Understanding how tropical forest carbon balance will respond to global change requires knowledge of individual heterotrophic and autotrophic respiratory sources, together with factors that control respiratory variability. These data were used to estimate ecosystem leaf, live wood and soil respiration with detailed information provided in Chambers et al. (2004).

本数据集记录了在亚马逊中部硬木森林中，为期一年的叶、活木质部和土壤呼吸量测量数据，以及相应的环境因素。测量工作在位于 ZF2 路公里 34 处的 INPA 保护区进行，该保护区位于 LBA 34 区的两个永久性森林调查样地（雅加达样地，南纬 -2.6091 度，西经 -60.2093 度）上，这两个狭长的样地捕捉到了与起伏地形相关的生态系统变化。叶呼吸量测量同样在位于 ZF-2 路公里 14 处的塔上进行。叶呼吸量测量于 2001 年 7 月和 8 月进行，木质部呼吸量在 2000 年 8 月和 2001 年 6 月测量，土壤呼吸量则在 2000 年 7 月至 2001 年 6 月间以 4 至 6 周的间隔进行。为了解热带森林碳平衡如何应对全球变化，需要掌握单个异养和自养呼吸源的异质性，以及控制呼吸变异性的因素。这些数据被用于估算生态系统叶、活木质部和土壤呼吸量，详细信息可参考 Chambers 等人（2004 年）的研究。