Vegetation Restoration Methods in Semiarid Areas of Gansu Province

CHENG Chang-guo; ZHAO Zhi-feng; LIU Min

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Vegetation Restoration Methods in Semiarid Areas of Gansu Province

- Vegetation Restoration Methods in Semiarid Areas of Gansu Province
- Bulletin of Soiland Water Conservation Vol. 32, Issue 1, Pages: 309-312(2013)
- 作者机构：
  
  甘肃省水土保持科学研究所,甘肃,兰州,730020
- 作者简介：
- 基金信息：
- DOI：
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- Published：2013
- 稿件说明：
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CHENG Chang-guo, ZHAO Zhi-feng, LIU Min. Vegetation Restoration Methods in Semiarid Areas of Gansu Province[J]. Bulletin of Soiland Water Conservation, 2013, 32(1): 309-312.
DOI：

CHENG Chang-guo, ZHAO Zhi-feng, LIU Min. Vegetation Restoration Methods in Semiarid Areas of Gansu Province[J]. Bulletin of Soiland Water Conservation, 2013, 32(1): 309-312. DOI：

摘要

甘肃省半干旱地区

土壤水分匮乏

生态用水严重不足

生态环境条件严酷

植被恢复困难。提出了"封禁优先

先封后植;先疏后补;以灌木为主

乔灌草结合"等措施

然后从水分平衡

抗旱保墒和林木生长等方面进行了合理性认证。封禁1a与未封禁地平均土壤含水量分别为8.40%和5.03%。栽植密度为1.5m×3m较1m×1.5m

1.5m×2m的杨树平均高度分别提高71.8%

17.5%;胸径分别提高91.6%

12.0%。密度为2m×4m的油松林较密度为2m×2m

2m×3m的高生长分别提高49.1%和13.9%;胸径分别提高59.4%

23.5%。密度为2.5m×6m较3.5m×3.5m的花椒林平均地径生长提高8.1%

平均高生长提高13.0%。乔木、灌木最小水分营养面积分别为25m

/株

14m

/株。

Abstract

Ecological restoration in the semiarid areas of Gansu Province is very difficult because of the harshenvironmental conditions such as soil water shortage and serious shortage of water for ecological use.Thispaper presented the measures like"grazing and cutting prohibition

enclosure before planting

sparsenessfirst and then densification in plantation

and planting dominated by shrubs in combination with trees andgrasses".The rational certification was then made from the aspects of water balance

soil moisture

droughtresistant

tree growth

etc.The average soil water contents for one year enclosure and no enclosure were 8.40% and 5.03%

respectively.Compared with poplar with the densities of 2m×2m and 2m×3m

theheight of poplar with the density of 1.5m×3m was improved by 71.8% and 17.5% and the diameter atbreast height

by 91.6% and 12.0%

respectively.Compared with Chinese pine with the densities of 2m×2m and 2m×3m

the height of Chinese pine with the density of 2m×4m was improved by 49.1% and13.9% and the diameter at breast height

by 59.4% and 23.5%

respectively.The diameter at breast height and theheight of pepper with density 2.5m×6mwere improved by 8.1% and 13.0% compared with pepper with the density 3.5m×3.5m.The moisture and nutrition areas for single arbor and shrubs were 25and 14m2

respectively.

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