[1]何琴飞,郑威,彭玉华,等. 贝江河林场杉木人工林凋落物储量及其持水特性[J].西北林学院学报,2021,36(4):48-54.[doi:10.3969/j.issn.1001-7461.2021.04.07]
　HE Qin-fei,ZHENG Wei,PENG Yu-hua,et al. Accumulation Amount and Water-holding Characteristics of the Litters under Chinese fir Plantation in Beijiang River Forest Farm[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2021,36(4):48-54.[doi:10.3969/j.issn.1001-7461.2021.04.07]
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 贝江河林场杉木人工林凋落物储量及其持水特性()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第36卷
期数:
2021年第4期
页码:
48-54
栏目:
出版日期:
2021-07-31

文章信息/Info

Title:
 Accumulation Amount and Water-holding Characteristics of the Litters under Chinese fir Plantation in Beijiang River Forest Farm
文章编号:
1001-7461(2021)04-0048-07
作者:
 何琴飞1; 2; 3; 郑威1; 2; 3; 彭玉华1; 2; 3; 谭长强1; 2; 3; 何峰1; 2; 3; 申文辉1; 2; 3*
 （1.广西林业科学研究院，广西 南宁 530002；2.广西优良用材林资源培育重点实验室，广西 南宁 530002；3.国家林业局 中南速生材繁育实验室，广西 南宁 530002）
Author(s):
 HE Qin-fei1; 2; 3; ZHENG Wei1; 2; 3; PENG Yu-hua1; 2; 3; TAN Zhang-qiang1; 2; 3; HE Feng1; 2; 3; SHEN Wen-hui1; 2; 3*
 (1.Guangxi Forestry Research Institute,Nanning 530002,Guangxi,China; 2.Guangxi Key Laboratory of Superior Timber Trees Resource Cultivation,Nanning 530002,Guangxi,China; 3.Key Laboratory of Central South Fast-growing Timber Cultivation,National Forestry and Grassland Administration,Nanning 530002,Guangxi,China)
关键词:
 ; 杉木人工林; 凋落物; 持水量; 林龄
Keywords:
 ; Chinese fir plantation;  litter;  water-holding capacity;  forest age
分类号:
S791.27
DOI:
10.3969/j.issn.1001-7461.2021.04.07
文献标志码:
A
摘要:
 基于野外调查与室内浸水试验，研究贝江河林场不同林龄组的杉木人工林凋落物储量、持水量、持水率和吸水速率。结果表明，不同林龄杉木人工林凋落物储量为1.41～7.77 t·hm-2，大小顺序为成熟林>近熟林>幼龄林>中林龄，且未分解层大于半分解层；最大持水量为2.88～12.01 t·hm-2，大小顺序与总储量一致；最大持水率为171.0%～266.8%，大小顺序为幼龄林>中林龄>近熟林>成熟林。不同林龄不同分解程度凋落物的持水动态变化规律一致，即持水量和持水率随着浸水时间的增加而增加，在0.25 h前增加较快，最后达到最大值；吸水速率随着浸水时间的增加而降低，在0.5 h前吸水速率很高，之后渐渐趋于饱和；且持水量和持水率与浸泡时间均呈对数关系，吸水速率与浸泡时间呈幂函数关系。总体上，在一定的年龄范围内，林龄的增加有利于凋落物的积累和持水量的增加。
Abstract:
 Combined with field investigation and indoor water immersion test,a study was conducted on the accumulation amount,water-holding capacity,water-holding rate and water-absorption rate of the litters under different forest age groups (young,middle aged,near-mature,and mature forest) in Beijiang River Forest Farm.The results indicated that the accumulation amount of the litters varied from 1.41-7.77 t·hm-2 in the order of mature forest>near-mature forest>young forest>middle aged forest,and the percentage of un-decomposed litter storage was higher than that of semi-decomposed litter.The maximum water-holding capacity was 2.88-12.01 t·hm-2,and the order was the same as the accumulation amount.The maximum water-holding rate ranged from 171.0% to 266.8%,and was in the order of young forest>middle aged forest>near-mature forest>mature forest.The water-holding capacity and water-holding rate of litters at different decomposition degrees increased with the increase of immersion time with faster rate before 0.25 h,and finally reached the maximum value.Whereas the water absorption rate decreased with the increase of immersion time,the fastest during 0.5 h,and then gradually tended to saturation.The water-holding capacity and water-holding rate changed logarithmically,while the water-absorption rate assumed a power function of immersion time.The study provides an important basic theory that the increase of forest age is beneficial to the increase of the accumulation and water holding capacity of litter.

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备注/Memo

备注/Memo:
 收稿日期：2020-08-07修回日期：2020-09-18
基金项目：广西科技重大专项“杉木人工林生态功能监测与增效研究”（桂科AA17204087-8）。
作者简介：何琴飞，高级工程师，硕士。研究方向：森林生态。E-mail:dragonfly.hqf@126.com
*通信作者：申文辉，教授级高工，博士。研究方向：森林生态和森林培育。E-mail:shenwenhui2003@163.com
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