文献类型：期刊文献

英文题名：Biomass production and carbon stocks in poplar-crop intercropping systems: a case study in northwestern Jiangsu, China

作者：Fang, Shengzuo[1] Li, Hailing[1] Sun, Qixiang[2] Chen, Lebei[1]

第一作者：Fang, Shengzuo

通信作者：Fang, SZ[1]

机构：[1]Nanjing Forestry Univ, Coll Forest Resources & Environm, Nanjing 210037, Peoples R China;[2]Chinese Acad Forestry, Res Inst Forestry, Beijing 100091, Peoples R China

年份：2010

卷号：79

期号：2

起止页码：213-222

外文期刊名：AGROFORESTRY SYSTEMS

收录：;Scopus(收录号：2-s2.0-77952320872);WOS:【SCI-EXPANDED(收录号:WOS:000277424700007)】；

基金：This study was fully supported by National Key Project of Scientific and Technical Supporting Programs funded by Ministry of Science & Technology of China during the 11th 5-year Plan (no. 2006BAD03A1505). The authors would like to thank Profs. Huanchao Zhang and Luozhong Tang from Nanjing Forestry University for their suggestions and kind assistance. We are indebted to the two anonymous reviewers for their helpful comments and English corrections on the manuscript.

语种：英文

外文关键词：Biomass; Carbon concentration; Carbon sequestration; Cropping system; Intercropping pattern; Poplar

摘要：The importance of agroforestry systems in CO2 mitigation has become recognized worldwide in recent years. However, little is known about carbon (C) sequestered in poplar intercropping systems. The main objective of this study is to compare the effects of three poplar intercropping designs (configuration A: 250 trees ha(-1); configuration B: 167 trees ha(-1) and configuration C: 94 trees ha(-1)) and two intercropping systems (wheat-corn cropping system and wheat-soybean cropping system) on biomass production and C stocks in poplar intercropping systems. The experiment was conducted at Suqian Ecological Demonstration Garden of fast-growing poplar plantations in northwestern Jiangsu. A significant difference in C concentration was observed among the poplar biomass components investigated (P a parts per thousand currency sign 0.05), with the highest value in stemwood and the lowest in fine roots, ranging from 459.9 to 526.7 g kg(-1). There was also a significant difference in C concentration among the different crop components (P a parts per thousand currency sign 0.05), and the highest concentration was observed in the corn ear. Over the 5-year period, the total poplar biomass increased with increasing tree density, ranging from 8.77 to 15.12 t ha(-1), while annual biomass production among the crops ranged from 4.69 to 16.58 t ha(-1) in the three configurations. Overall, total C stock in the poplar intercropping system was affected by configurations and cropping systems, and configuration A obtained the largest total C stock, reaching 16.7 t C ha(-1) for the wheat-soybean cropping system and 18.9 t C ha(-1) for the wheat-corn cropping system. Results from this case study suggest that configuration A was a relative optimum poplar intercropping system both for economic benefits and for C sequestration.