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当前位置: 首页 > 文章 > 长白山云冷杉针阔混交林半分解层凋落物生态功能 林业科学研究 2019 (1) 147-152
Position: Home > Articles > Ecological Function of Semi-decomposition Litter in Natural Spruce-fir Mixed Forest of Changbai Mountains Forest Research 2019 (1) 147-152

长白山云冷杉针阔混交林半分解层凋落物生态功能

作  者：
秦倩倩;王海燕;李翔;解雅麟;雷相东;郑永林;杨丹丹
单  位：
北京林业大学林学院;中国林业科学研究院资源信息研究所
关键词：
云冷杉针阔混交林;凋落物;半分解层;持水性能;养分归还
摘  要：
[目的]以长白山天然云冷杉针阔混交林为研究对象,分析凋落物的现存量及持水性能和养分归还量等,从水源涵养和养分归还两方面阐述森林凋落物的生态功能。[方法]基于等距离网格布点法,在4块1 hm~2样地上采集凋落高峰期前(8月下旬)半分解层的凋落物样品400个,并对其生态功能指标进行测定分析。[结果]4块云冷杉针阔混交林样地半分解层凋落物现存量均值为19.50 t·hm~(-2);持水量均值为5.56 t·hm~(-2),持水率均值为64.08%;全碳(C)、全氮(N)和全磷(P)的养分浓度均值分别为421.68、18.86和1.26 g·kg~(-1),养分归还量均值依次为8.16、0.36和0.02 t·hm~(-2),养分利用效率大小顺序为P>N>C。[结论]天然云冷杉针阔混交林各样地间虽存在差异,但其半分解层凋落物的水源涵养和养分归还等生态功能均较好,林下凋落物分解速度较快,持水性能较好,养分归还量较多。
译  名：
Ecological Function of Semi-decomposition Litter in Natural Spruce-fir Mixed Forest of Changbai Mountains
作  者：
QIN Qian-qian;WANG Hai-yan;LI Xiang;XIE Ya-lin;LEI Xiang-dong;ZHENG Yong-lin;YANG Dan-dan;The College of Forestry, Beijing Forestry University;Research Institute of Forest Resources Information Techniques, Chinese Academy of Forestry;
单  位：
QIN Qian-qian%WANG Hai-yan%LI Xiang%XIE Ya-lin%LEI Xiang-dong%ZHENG Yong-lin%YANG Dan-dan%The College of Forestry, Beijing Forestry University%Research Institute of Forest Resources Information Techniques, Chinese Academy of Forestry
关键词：
spruce-fir and broad-leaved mixed forest;;litter;;semi-decomposition layer;;water holding capacity;;nutrient return
摘  要：
[Objective] To study the ecological function of semi-decomposition litter in natural spruce-fir mixed forest of Changbai Mountains by measuring its standing crop, water holding capacity and nutrients return. [Method] Four 1-hm~2 plots were selected for sample collection and 400 semi-decomposition litter samples were collected with equidistant grid point sampling method before the peak of falling(late August) to determine the ecological function indices. [Result] The results showed that the average amount of semi-decomposition litter in the four plots was 19.50 t·hm~(-2); the average water holding capacity was 5.56 t·hm~(-2) and the average water holding rate was 64.08%; the average concentrations of total carbon(C), total nitrogen(N) and total phosphorus(P) were 421.68 g·kg~(-1), 18.86 g·kg~(-1) and 1.26 g·kg~(-1), the average return of nutrients(C, N, P) were 8.16 t·hm~(-2), 0.36 t·hm~(-2) and 0.02 t·hm~(-2), respectively, and nutrients use efficiency was in the order of P > N > C. [Conclusion] Although there are differences among the four plots in natural spruce-fir mixed forest of Changbai Mountains, the semi-decomposition litter has higher water conservation and nutrient return with faster decomposition rate, better water holding capacity and more nutrient return.

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