Effects of Artificial Vegetation Types on Soil Moisture, Carbon and Nitrogen in the Hill and Gully Area of the Loess Plateau

YANG Guang; RONG Li-yuan

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Effects of Artificial Vegetation Types on Soil Moisture, Carbon and Nitrogen in the Hill and Gully Area of the Loess Plateau

- Effects of Artificial Vegetation Types on Soil Moisture, Carbon and Nitrogen in the Hill and Gully Area of the Loess Plateau
- Bulletin of Soiland Water Conservation Vol. 26, Issue 6, Pages: 30-33(2007)
- 作者机构：
  
  1. 西北农林科技大学
  2. 河北省广宗县职教中心
  3. ,陕西,西安,710048
  4. 中国科学院水利部水土保持研究所
  5. 广宗 .,河北,054600
- 作者简介：
- 基金信息：
- DOI：
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- Published：2007
- 稿件说明：
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YANG Guang, RONG Li-yuan. Effects of Artificial Vegetation Types on Soil Moisture, Carbon and Nitrogen in the Hill and Gully Area of the Loess Plateau[J]. Bulletin of Soiland Water Conservation, 2007, 26(6): 30-33.
DOI：

YANG Guang, RONG Li-yuan. Effects of Artificial Vegetation Types on Soil Moisture, Carbon and Nitrogen in the Hill and Gully Area of the Loess Plateau[J]. Bulletin of Soiland Water Conservation, 2007, 26(6): 30-33. DOI：

摘要

以黄土高原沟壑区人工建造的典型植被油松、侧柏、刺槐、沙棘、苹果为研究对象

研究分析了不同植被类型对土壤水分含量、土壤碳氮累积等的变化影响。研究表明

旱季刺槐林地表现出了强烈的耗水特征

200 cm以下土壤含水量具明显减少趋势。200—300 cm处水分含量仅为5.8%～7.1%

而油松林地200 cm以下与荒草地含水量基本相-致

土壤水分含量保持在15%左右

侧柏、沙棘、苹果土壤水分利用主要在20—200 cm范围内。雨季

天然降雨虽对林地水分含量有所补充

但只表现在0—50 cm表层

且各个植被类型间表现不明显;与荒草相比

油松群落土壤有机碳氮提高了9.3%

果园土壤有机碳含量显著降低

而沙棘、侧柏和刺槐群落的土壤有机碳含量虽低于荒草群落

但尚未达到显著水平。

Abstract

Reforestation plays an important role in soil conservation and soil carbon sequestration.Five types of artificial vegetation were selected in the Wangdonggou watershed located in the hill and gully area of the Loess Plateau to understand the influences of artificial vegetation on soil properties.Soil moisture

soil or- ganic C(SOC)

and total soil nit rogen were investigated under different types of vegetation.During dry sea- son

there was the intense water consumption characteristic in locust tree forest land and soil water content below the 200 cm depth ranged from 5.8% to 7.1%

showing a decrease wit h depth.Compared to grass- land

Chinese pine forest land had a soil water content of 15% in the same layer.Soil moist ure used for ori- ental arbor-vitae

sea-buckthorn

and apple was mainly distributed between 20 and 200 cm from soil surface.Although natural rainfall had a supplement to the forest land

soil water within 50 cm of soil surface was recharged in rainy season.Compared with grassland

SOC content was increased by 9.3% for Chinese pine and decreased by 40.1% for orchard.SOC contents of sea-buckthorn

oriental arbor-vitae

and locust tree were lower than those on grassland

although not significantly.

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