| 云南省中部3种森林土壤含水率、容重和细根重及其垂直分布 |
| |
| 引用本文： | 单梦颖,;杨永刚,;吴兆录.云南省中部3种森林土壤含水率、容重和细根重及其垂直分布[J].云南地理环境研究,2014(4):38-44. |
| |
| 作者姓名： | 单梦颖 ;杨永刚 ;吴兆录 |
| |
| 作者单位： | [1]云南大学生态学与地植物学研究所,云南昆明650091; [2]玉溪市华宁县林业局,云南华宁652800 |
| |
| 基金项目： | 科技部生态固碳专项,中国科学院中国森林生态系统固碳现状、速率、机制和潜力课题（编号：XDA0505020603）. |
| |
| 摘 要： | 根据27个土壤剖面的405个土壤样品，研究云南中部地区华山松林、旱冬瓜林、云南松林的土壤含水率、容重和细根重及其垂直分布特征。结果表明：3种森林100em深土壤的平均含水率分别是（28．79±11．98）％、（24．66±9．89）％、（14．11±5．84）％，差异极显著；平均容重分别是（1．14±0．20）g／cm3、（1．26±0．18）g/cm3、（1．42±0．12）g／cm3，差异极显著；平均细根重分别为（0．1956±0．2144）g／100cm3、（0．0706±0．1066）g／100cm3、（0．1381±0．2989）g／100cm3，在0．05水平上差异显著。华山松林林下土壤的物理性质最好，旱冬瓜林次之，云南松林最差。3种森林里，随着土壤深度增加，土壤含水率增加，土壤容重和土壤细根重减少。华山松林与云南松林平均容重与平均细根重均显著负相关，旱冬瓜林平均含水率与平均容重显著负相关。华山松林下土壤细根量最大，0～20cm层根系占根系总重量的83％。
|
| 关 键 词： | 土壤容重 细根 云南松 华山松 旱冬瓜 |
SOIL MOISTURE CONTENT,BULK DENSITY AND FINE ROOT WEIGHT AS WELL AS THEIR VERTICAL DISTRIBUTION IN SOILS OF THREE FOREST TYPES IN THE CENTRAL YUNNAN PROVINCE |
| |
| Institution: | SHAN Meng - ying , YANG Yong - gang, WU Zhao - lu (1. Institute of Ecology and Geobotany Yunnan University, Kunming 650091, Yunnan, China; 2. Forestry Bureau of Huaning County, Yuxi Prefecture of Yunnan Province, Huaning 652800, Yunnan, China) |
| |
| Abstract: | Based on the 405 soil samples from 27 soil plane surfaces, it was studied the moisture content, soil bulk density, fine root weight as well as their vertical distribution in soils of forests dominated respectively by Pinus armandi, Alnus nepalensis and Pinus yunnanensis. The results indicated that, within 100 cm depth in soils of the three forests, the average moisture content were （ 28.79 ± 11.98 ） %, （ 24. 66 ±9.89 ） %, （ 14. 11 ± 5.84）%, respectively; the average soil bulk density were （1.14 ±0.20） g/cm3, （1.26 ±0. 18） g/cm3, （ 1.42 ± 0. 12 ） g/cm3 respectively ; and the average fine root weight were （0. 1956 ± 0. 2144 ） g/100 cm3, （0. 0706 ±0. 1066） g/100cm3, （0. 1381 ± 0. 2989 ） g/100 cm3, respectively. Soil moisture content increased while soil bulk density and fine root weight decreased from the surface to depth of soils in the 3 studied forests. The best physical properties of soil is Pinus armandi, the second is Alnus nepalensis and the worst is Pinus yunnanensis. It was also found the negative correlations of soil bulk density and soil fine root weight of Pinus yunnanensis forests and Pinus armandi forests, and the negative correlations of soil moisture content and soil bulk density in Alnus nepalensis forests. Eighty three percent of soil fine root were found in the 0 -20 cm surface soils of Pinus armandi forests. |
| |
| Keywords: | soil bulk density soil fine root weight Pinus yunnanensis Pinus armandi Alnus nepalensis |
| 本文献已被 维普 等数据库收录！ |
|
