Distribution and Construction Techniques of Integrated Protection Forest System of Alpine Meadow in Upsteam Area of Xiliao River

YANG Zhi guo; SUN Bao ping; DING Guo dong; ZHAO Jun

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Distribution and Construction Techniques of Integrated Protection Forest System of Alpine Meadow in Upsteam Area of Xiliao River

- Distribution and Construction Techniques of Integrated Protection Forest System of Alpine Meadow in Upsteam Area of Xiliao River
- Bulletin of Soiland Water Conservation Vol. 25, Issue 4, Pages: 64-67(2006)
- 作者机构：
  
  1. 北京林业大学水土保持学院,北京,100083
  2. ,陕西,西安,710048
  3. 北京林业大学材料学院,北京,100083
- 作者简介：
- 基金信息：
- DOI：
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- Published：2006
- 稿件说明：
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YANG Zhi guo, SUN Bao ping, DING Guo dong, et al. Distribution and Construction Techniques of Integrated Protection Forest System of Alpine Meadow in Upsteam Area of Xiliao River[J]. Bulletin of Soiland Water Conservation, 2006, 25(4): 64-67.
DOI：

YANG Zhi guo, SUN Bao ping, DING Guo dong, et al. Distribution and Construction Techniques of Integrated Protection Forest System of Alpine Meadow in Upsteam Area of Xiliao River[J]. Bulletin of Soiland Water Conservation, 2006, 25(4): 64-67. DOI：

摘要

针对西辽河上游高寒漫甸区存在的主要生态环境问题

结合当地自然经济条件

系统研究了西辽河上游综合防护林体系的配置和营建技术

并对其防护效益进行了初步观测。该体系以乔、灌、草、带、网、片(块)相结合的农田牧场防护林为主体

以水源涵养林、水土保持林和生态经济沟为补充

面积达4.68×104hm2

森林覆盖率由原来的11.8%增加到23.3%

虽然农防林护田增产的效益尚不明显

但退化草场的产草量、草种结构、土壤的物理性质和养分状况都发生了明显的改变。综合防护林体系的建成促进了区域环境、经济与社会的可持续发展

维护了辽河中下游及首都的生态安全。

Abstract

This paper was intended to solve the main eco-environmental problems of the alpine meadow in the upstream area of the Xiliao River.Based on natural and economic conditions of the area

the distribution and construction techniques of an integrated protection forest system were studied systematically

and its protection effects were investigated preliminarily.The integrated protection forest system covers 46 800 hm2.The main part of the system is the shelter forest for farmlands

which is combined with trees

shrubs and herbs

as well as forest belts

forest nets and forest patches.Water resources conservation forest

soil and water conservation(forest and eco-economic) channels are the important compensations.The percentage of forest coverage increases from 11.8% to 23.3%.At present

effects of the shelter forest for farmlands are not so significant

but grass yield

grass species composition

physical property and nutrient status change greatly in the deteriorated grasslands.The integrated protection forest system may greatly accelerate sustainable development of the regional environment

economy and society

and maintain ecological security of the midstream and downstream areas of the Xiliao River and the capital of China.

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