川西山地主要人工林种群根系生物量与生产力

来源 :生态学报 | 被引量 : 71次 | 上传用户:xuqinxiaofan
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采用标准地法,对四川西部山地主要人工林的根系进行了研究,结果表明:(1)用D2H估测单株林木根系生物量的适合模型均以幂函数模型为最佳,所筛选统计模型的相关系数较高,在0.94~0.99之间;(2)根系总生物量大小排序为日本落叶松>峨眉冷杉>四川红杉>川西云杉,分别为37.832、24.907、18.320thm2和15.982thm2,各级根的生物量占总根量的比例各不相同;(3)根系生物量集中在分布土层0.00~40.00cm,川西云杉占97.88%,四川红杉占96.78%,峨眉冷杉占95.65%,
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