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当前位置: 首页 > 文章 > 黄土丘陵区不同林龄刺槐人工林碳、氮储量及分配格局 应用生态学报 2014,25 (2) 333-341
Position: Home > Articles > Storage and allocation of carbon and nitrogen in Robinia pseudoacacia plantation at different ages in the loess hilly region,China Chinese Journal of Applied Ecology 2014,25 (2) 333-341

黄土丘陵区不同林龄刺槐人工林碳、氮储量及分配格局

作  者：
艾泽民;陈云明;曹扬
单  位：
西北农林科技大学水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室;西北农林科技大学林学院;中国科学院水利部水土保持研究所
关键词：
刺槐人工林;碳氮储量;分配格局;林龄
摘  要：
对黄土丘陵区9、17、30和37年生刺槐人工林进行调查,研究刺槐人工林生态系统碳、氮储量随林龄的变化动态及分配格局.结果表明:各林龄刺槐人工林乔木层碳、氮含量分别为435.9~493.4 g·kg-1和6.8~21.0 g·kg-1;草本层和凋落物层碳、氮含量分别为396.3~459.2 g·kg-1和14.2~23.5 g·kg-1;土壤层碳、氮含量分别为2.7~10.7 g·kg-1和0.2~0.7 g·kg-1.树干是乔木层主要的碳、氮库,分别占乔木层碳、氮储量的46.9%~63.3%和39.3%~57.8%;37年生刺槐人工林0~20 cm土层碳、氮储量最大,分别为30.1和1.8 Mg·hm-2.刺槐人工林生态系统的总碳、氮储量随林龄增加而逐渐增大,均在37年生时达到最大值,分别为127.9 Mg·hm-2和6512.8 kg·hm-2;土壤层是刺槐人工林生态系统的主要碳、氮库,分别占人工林生态系统总碳、氮的63.3%~83.3%和80.3%~91.4%.
译  名：
Storage and allocation of carbon and nitrogen in Robinia pseudoacacia plantation at different ages in the loess hilly region,China
作  者：
AI Ze-min;CHEN Yun-ming;CAO Yang;College of Forestry,Northwest A&F University;State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau,Institute of Soil and Water Conservation,Northwest A&F University;Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources;
关键词：
Robinia pseudoacacia plantation;;carbon and nitrogen storage;;allocation pattern;;forest age.
摘  要：
The 9-,17-,30- and 37-year-old Robinia pseudoacacia plantations in the loess hilly region were investigated to study the dynamics and allocation patterns of carbon and nitrogen storage. The results showed that the ranges of carbon and nitrogen contents were 435. 9-493. 4 g·kg-1and 6. 8-21. 0 g·kg-1in the arbor layer,396. 3-459. 2 g·kg-1and 14. 2-23. 5 g·kg-1in the herb and litter layer,and 2. 7-10. 7 g·kg-1and 0. 2-0. 7 g·kg-1in the soil layer,respectively. The branch was the major carbon and nitrogen pool in the arbor layer,accounting for 46. 9%-63. 3% and 39. 3%-57. 8%,respectively. The maximum storage values were 30. 1 and 1. 8 Mg·hm-2for carbon and nitrogen,respectively,in the 0-20 cm soil layer in the 37-year-old R. pseudoacacia plantation. The total carbon and nitrogen storage in the R. pseudoacacia plantation ecosystem increased with increasing forest age,and the maximum values were 127. 9 Mg · hm-2and 6512. 8 kg·hm-2for carbon and nitrogen storage,respectively,in the 37-year-old R. pseudoacacia plantation. Soil layer was the major carbon and nitrogen pool of R. pseudoacacia plantation ecosystem, accounting for 63. 3%-83. 3% and 80. 3%-91. 4%,respectively.

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