Effects of Land Use Types on Soil Water and Aboveground Biomass in Loess Hilly Region

XIAO Lie; LIU Guobin; XUE Sha; ZHANG Chao

doi:10.13961/j.cnki.stbctb.2016.04.036

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Effects of Land Use Types on Soil Water and Aboveground Biomass in Loess Hilly Region

- Effects of Land Use Types on Soil Water and Aboveground Biomass in Loess Hilly Region
- Bulletin of Soiland Water Conservation Vol. 36, Issue 4, Pages: 204-209(2016)
- 作者机构：
  
  1. 西安理工大学西北旱区生态水利工程国家重点实验室培育基地,陕西,西安,710048
  2. 西北农林科技大学水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室, 陕西杨凌,712100
  3. 中国科学院水利部水土保持研究所, 陕西杨凌,712100
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2016.04.036
  CLC：
- Published：2016
- 稿件说明：
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XIAO Lie, LIU Guobin, XUE Sha, et al. Effects of Land Use Types on Soil Water and Aboveground Biomass in Loess Hilly Region[J]. Bulletin of Soiland Water Conservation, 2016, 36(4): 204-209.
DOI：

XIAO Lie, LIU Guobin, XUE Sha, et al. Effects of Land Use Types on Soil Water and Aboveground Biomass in Loess Hilly Region[J]. Bulletin of Soiland Water Conservation, 2016, 36(4): 204-209. DOI： 10.13961/j.cnki.stbctb.2016.04.036.

摘要

[目的

]

研究不同土地利用方式下的土壤水分状况及其与植被群落特征的关系，为黄土丘陵区的植被恢复和重建提供理论依据。[方法

]

采用野外调查的方法和数理统计分析方法开展研究。[结果

]

纸坊沟流域主要植被类型的地上干生物量为310.0~10 036.2 g/m

，平均地上干生物量由大到小依次为：林地 >灌木地 >农田 >人工草地 >天然草地。地上鲜生物量与株高存在极显著的正相关关系（

=0.9674，

0.01）。不同土地利用方式0-100cm土层土壤含水量较高，且土壤水分变异较大；100cm以下土壤含水量相对稳定，坝地玉米和梯田玉米的极易效水量分别为221.73和221.99mm；柠条和刺槐的土壤含水量最低，土壤水分类型为难效水，分别为311.44和333.09mm；其他6种土地利用方式的土壤水分为中效易效水。[结论

]

黄土丘陵区人工林灌植被的种植导致深层土壤水分的大量消耗，不利于该区植被恢复和建设的可持续发展。

Abstract

[Objective] Soil moisture under different land use patterns were measured and its links with the characteristics of plant communities were studied to provide guidance for the vegetation restoration and rehabilitation. [Methods] Based on field investigation

mathematical analysis was used. [Results] The aboveground dry biomass of main vegetation in Zhifanggou watershed ranged from 310.0 to 10036.2 g/m2 among ten land use types

and the mean aboveground dry biomass ranked as: forest land >shrub land >farmland >artificial grassland>natural grassland. There was a significant positive correlation between aboveground fresh biomass and vegetation height(R2=0.967 4

p<0.01). Soil moisture in 0-100 cm of different land use types had high content and varied greatly. Comparatively

the soil moisture content in 100-500 cm was nearly constant. The amount of most easily available soil moisture in check-dam and terrace with Z. mays planted were 221.73 mm and 221.99 mm

respectively. The soil moistures in C. korshinskii and R. pseudoacacia were extremely low

with hardly-available soil moisture contents of 311.44 mm and 333.09 mm

respectively. Soil moistures in the other six land use types were classified as easily-moderately available soil moisture. [Conclusion] In the loess hilly region

all vegetation types

to a certain extent

can improve local ecological environment

but some artificial forest and shrub can lead to the excessive consumption of deep soil moisture

and are not propitious to the sustainable development of vegetation.

关键词

Keywords

references

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