摘要
通过野外实地调查对福州地区林龄7年的柑橘果园生态系统碳氮储量及分布特点进行了研究,结果表明:有机碳储量为158.282 t.hm-2,其中土壤(0-100 cm)碳储量为151.734 t.hm-2,占总有机碳储量的95.86%,植被碳储量为6.548 t.hm-2,占4.14%;氮储量为14.602 t.hm-2,其中土壤(0-100 cm)氮储量为14.399 t.hm-2,占总氮储量的98.61%,植被氮储量为0.203 t.hm-2,占1.39%.相关分析表明,柑橘果树不同器官碳氮含量呈极显著负相关(r=0.976),不同土层土壤的碳氮含量呈极显著正相关(r=0.998).
Organic carbon and nitrogen storage in 7 years old citrus orchard was detected with the field investigation and measure- ment. The results showed that carbon storage in the ecosystem was 158.282 t · hm^-2 , in which soil (0 - 100 cm) carbon storage was 151.734 t · hm^-2, vegetation carbon storage was of 6.548 t · hm^-2, accounting for 95.86% and 4.14% of total carbon storage, respectively. Nitrogen storage in the ecosystem was 14.602 t · hm^-2 , in which soil (0 - 100 cm) nitrogen storage was 14.399 t · hm^-2 , vegetation nitrogen storage was 0.203 t · hm^-2, accounting for 98.61% and 0. 203% of total nitrogen storage, respectively. According to the correlation analysis, carbon and nitrogen contents in different organs were significantly negatively correlated (r = 0.976), and soil organic carbon and nitrogen contents in different soil layers were significantly positively correlated (r = 0.998).
出处
《福建农林大学学报(自然科学版)》
CSCD
北大核心
2008年第3期316-319,共4页
Journal of Fujian Agriculture and Forestry University:Natural Science Edition
基金
福建省自然科学基金项目(D0510026)
科技部农业成果转化项目(2007GB2C400151)资助
关键词
柑橘果园
碳储量
氮储量
碳氮相关性
citrus orchard
organic carbon storage
nitrogen storage
carbon-nitrogen relativity