摘要
通过对3种不同的银杏复合经营模式(银杏-油菜-花生、银杏-小麦-花生、银杏-桑树)及3种纯农经营模式(油菜-花生、小麦-花生、桑树)下碳储量的研究,旨在探讨不同银杏复经营及农地对系统碳储量的影响。结果表明:不同银杏复合经营模式下碳储量显著高于农地。其中GRP模式生物碳储量最高,为27.13t/hm^2;GM模式下,凋落物和土壤碳储量显著高于其它系统,分别为7.64和79.07 t/hm^2;GM模式碳储量达到了122.54 t/hm^2,显著高于其它模式,不同模式间总碳储量从大到小为别为:GM>GRP>GWP>M>RP>WP。土壤碳储量分配比例最多,占到了58.03~74.45%;在复合系统中,银杏碳储量分配比例仅次于土壤,占到了17.96~25.73%。总的来说,银杏复合系统碳储量高于农地,特别是GM模式。
In order to study the effects of carbon stock in Ginkgo agroforestry systems and agriculture systems, we established three Ginkgo agroforestry systems and three agriculture systems. They are GRP （Ginkgo-Rapeseed-Peanut）, GWP （Ginkgo- Wheat-Peanut）, GM （Ginkgo-Mulberry）, RP （Rapeseed-Peanut）, WP （Wheat-Peanut）, and M （Mulberry）. The result showed that significantly higher carbon stocks were obtained in Ginkgo agroforestry systems than agriculture systems. The highest trees and crops C stock was in GRP with 27.13 t·hm^2, while GM had highest litter and soil C stock with 7.64, 79.07 t·hm^2, respectively. The total C stock in GM system was reach to 122.54 t·hm^2 which was significantly higher than other systems. The total C stock from high to low were list as： GM 〉 GRP 〉 GWP 〉 M 〉 RP 〉 WP. Soil C stock was the highest stock which contained 58.03-74.45% to total C stock. In Ginkgo agroforestry systems, Ginkgo C stock contained 17.96-25.73% C stock which higher than other stocks cxccpt soil C stock. In general, the carbon stocks in Ginkgo agroforestry systems were better than in agriculture systems, especially in GM system.
出处
《中南林业科技大学学报》
CAS
CSCD
北大核心
2017年第10期112-117,共6页
Journal of Central South University of Forestry & Technology
基金
国家科技支撑计划"银杏和印楝珍贵材用和药用林定向培育关键技术研究与示范"(2012BAD21B04)
