Wu Qinxiao,Liu Xiangdong,Zhao Hongyan.A STUDY ON DYNAMICS OF LITTER AMOUNT IN FOREST STANDS OF CHINESE PINE AND MOUNTAIN POPLAR[J].Research of Soil and Water Conservation,1991,(02):51-56.
油松、山杨林枯枝落叶层蓄积动态的研究
- Title:
- A STUDY ON DYNAMICS OF LITTER AMOUNT IN FOREST STANDS OF CHINESE PINE AND MOUNTAIN POPLAR
- Keywords:
- Pinus tabulaeformis; Populus davidiana; litter
- 摘要:
- 流域坡面上的枯枝落叶只有达到一定厚度，才能防止水土流失。本文从动态的角度，对陕北黄土丘陵区的主要森林类型油松和山杨林的枯枝落叶层的蓄积进行了研究，结果表明，中龄油松和山杨林的现存蓄积量分别为17.95t/ha和8.34t/ha；年凋落量为3.24t/ha和3.09t/ha，油松林的凋落主要发生在10月至翌年4月，山杨林则集中在9、10两月；年分解量为3.23t/ha和2.89t/ha，其中夏季分解快，冬季分解慢。根据林分枯落物现存蓄积量、凋落量和分解量阐明的蓄积动态表明，油松枯落物蓄积以4月为最多，10月最少，山杨则以1月最多，8月最少。在目前的年龄和结构状态下，凋落量和分解量基本呈平衡状态，枯落物蓄积量无明显增减。
- Abstract:
- Only by reaching a fairly deep thickness of litter on the slopes of watershed, can the soil and water loss be averted. This paper from dynamic angles examined the litter amount in forest stands of Pinus tabulaeformis and Populus davidiana of middle age in loess hilly region of northern Shaanxi. The results of the study showed that the per factor existing litter amount in both above-mentioned stands is 17.95t. and 8.34t., respectively, and the annual litter fall is 3.24t. and 3.09t. correspondingly. The litter fall in P. tabulaeformis stand occurs meanly from October to April of next year after growing season, and in P.davidiana stand-in September and October with concentration. The annual litter decomposition in both stands is determined as 3.23t./ha and 2.89t./ha,and it is going more quickly in summer and more slowly in winter. According to the dynamic changes of litter on the basis of its existing amount, annuel fall and decomposition, the maximum litter amount in year for P. tabulaeformis stand may be observed in April, and the minimum-in October. The same as for P. davidiana stand they are in January and August, respectively. At the present conditions of stand age and structure, the litterfall and decomposition are in balance. There are not obvious changes in litter amount.
参考文献/References:
[1〕李勇, 吴钦孝.油松人工林根系对土壤抗冲性能的增强效应, 《水土保持学报》, 1990年第1期
[2〕吴钦孝、李勇.黄土高原植物根系提高土壤抗冲性能的研究, 《水土保持学报》, 1990年第1期
[3] 王佑民等.刺槐林地土壤抗蚀性的研究, 《林业科技通讯》, 1984年第5期
[4] 蒋定生.黄土区不同利用类型土壤抗冲刷能力的研究, 《土壤通报》, 1979年第4期
[5] 苏宁虎.森林枯落物的水文作用研究概况, 《陕西林业科技》, 1984年第4期
相似文献/References:
[1]张洋,刘华,王得祥,等.商洛地区不同林龄油松人工林土壤理化性质研究[J].水土保持研究,2012,19(03):82.
ZHANG Yang,LIU Hua,WANG De-xiang,et al.Study on Soil Physicochemical Properties along Forest Age of Pinus tabulaeformis Plantations[J].Research of Soil and Water Conservation,2012,19(02):82.
[2]吴钦孝,刘向东,赵鸿雁.山杨林地土壤的物理性质和水分特性[J].水土保持研究,1991,(02):79.
Wu Qinxiao,Liu Xiangdong,Zhao Hongyan.SOIL FHY SICAL FROPERTIES AND ITS WATER CHARACTERISTICS IN MOUNTAIN POPLAR FOREST LAND[J].Research of Soil and Water Conservation,1991,(02):79.
[3]胡建忠.山杨混交类型生产力及土壤质量综合评价[J].水土保持研究,1995,2(01):44.
Hu Jianzhong.Integrative Evaluation on Soil Quality and productivity of Populus davidiana Dode Mixed Forest[J].Research of Soil and Water Conservation,1995,2(02):44.
[4]刘广,周心澄.沙地油松栽植试验研究[J].水土保持研究,1995,2(02):163.
Lion Guang,Zhou Xincheng.Study on the Planting Experiment of Pine in Desert[J].Research of Soil and Water Conservation,1995,2(02):163.
[5]伊敏,金雁海,郑明军,等.大青山干旱阳坡造林技术试验研究[J].水土保持研究,1998,5(03):34.
Yi Min,Jin Yanhai,Zheng Mingjun,et al.Forestational Technical Experiments of the Drought South Slope in Daqing Mountain[J].Research of Soil and Water Conservation,1998,5(02):34.
[6]金雁海,伊敏,郑明军,等.大青山南坡人工油松林水土保持效益研究[J].水土保持研究,1998,5(03):129.
Jin Yanhai,Yi Min,Zheng Mingjun,et al.Soil and Water Conservational Effects of Artificial Pinus tabulaeformis Forest on South Slope of Daqing Mountain[J].Research of Soil and Water Conservation,1998,5(02):129.
[7]步兆东,高大鹏,王文智,等.油松刺槐造林成活生长最低土壤水分指标的测定[J].水土保持研究,2003,10(04):170.
BU Zhao-dong,GAO Da-peng,WANG Wen-zhi,et al.Survey of the Minimum Water Containing Index in Soil for Survival and Growth of Pinus tabulaeformis Carr and Robinia pseudo-acacia[J].Research of Soil and Water Conservation,2003,10(02):170.
[8]薄颖生,韩恩贤,杨培华,等.GGR6号在油松容器育苗上的应用[J].水土保持研究,2005,12(06):23.
BUO Ying-sheng,HAN En-xian,YANG Pei-hua,et al.Application of Growth Regulators of Plant on Growing Seedlings of Pinus tablaefomis Carr with Container[J].Research of Soil and Water Conservation,2005,12(02):23.
[9]胡振华,王电龙,呼起跃.山西省雁北地区沙地樟子松和油松生长及蒸腾特性对比研究[J].水土保持研究,2008,15(01):69.
HU Zhen-hua,WANG Dian-long,HU Qi-yue.Comparative Study on Growth and Transpiration of Pinus sylvestris var.Mongolica and Pinus tabulaeformis in North Shanxi Province[J].Research of Soil and Water Conservation,2008,15(02):69.
[10]鲁绍伟,刘凤芹,余新晓,等.北京山区不同密度油松结构与功能研究[J].水土保持研究,2008,15(01):117.
LU Shao-wei,LIU Feng-qin,YU Xin-xiao,et al.Studies on the Configuration and Function of Different Density Pine in Rocky Mountain Area of Beijing[J].Research of Soil and Water Conservation,2008,15(02):117.
[11]刘向东,吴钦孝,赵鸿雁,等.黄土丘陵区油松人工林和山杨林林冠对降水的再分配及其对土壤水分的影响[J].水土保持研究,1991,(02):9.
Liu Xiangdong,Wu Qinxiao,Zhao Hongyan,et al.REDISTRIBUTION OF PRECIPITATION BY CANOPIES OF ARTIFICIAL CHINESE PINES AND MOUNTAIN POPLARS AND ITS INFLUENCE ON SOIL MOISTURE IN LOESS HILLY REGION[J].Research of Soil and Water Conservation,1991,(02):9.
[12]赵鸿雁,刘向东,吴钦孝.枯枝落叶层阻延径流速度研究[J].水土保持研究,1991,(02):64.
Zhao Hongyan,Liu Xiangdong,Wu Qinxiao.A STUDY ON RETARDATION OF RUNOFF VELOCITY BY LITTER[J].Research of Soil and Water Conservation,1991,(02):64.
备注/Memo
收稿日期:;改回日期:。
基金项目:国家自然科学基金