Systematic Approach to Energy Flow of Huangjia Ercha Watershed III.Energy Flow Analysis for Forestry and Animal Husbandry

LI Zhongkui

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Systematic Approach to Energy Flow of Huangjia Ercha Watershed III.Energy Flow Analysis for Forestry and Animal Husbandry

- Systematic Approach to Energy Flow of Huangjia Ercha Watershed III.Energy Flow Analysis for Forestry and Animal Husbandry
- Bulletin of Soiland Water Conservation Vol. 18, Issue 2, Pages: 44-47(1999)
- 作者机构：
  
  中国林业科学研究院,北京市,100091
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- Published：1999
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LI Zhongkui. Systematic Approach to Energy Flow of Huangjia Ercha Watershed III.Energy Flow Analysis for Forestry and Animal Husbandry[J]. Bulletin of Soiland Water Conservation, 1999, 18(2): 44-47.
DOI：

LI Zhongkui. Systematic Approach to Energy Flow of Huangjia Ercha Watershed III.Energy Flow Analysis for Forestry and Animal Husbandry[J]. Bulletin of Soiland Water Conservation, 1999, 18(2): 44-47. DOI：

摘要

计算了毛条等5种灌木和杨树等4种乔木在整地、栽培、抚育管理和采伐等各个环节的人工、畜工和机具投能量，对各种林木的活立木和薪材产能做了对比分析。分析了沙打旺、紫花苜蓿和红豆草生产的人工种子投能和畜力、幼畜、鸡蛋和畜禽类等产能，在分析家畜、家禽投能结构与产能关系的基础上，对畜牧业子系统能量流做了系统分析。建议发展养羊和畜牧，限制和减少兔、鸡的饲养量。

Abstract

The energy input from human

animal and machines in soil preparation

planting cultivation and management and cutting

etc.to 5 kinds of shrubs and 4 of trees were calculated

then the comparison of energy input with output of standing trees and/or fuel wood was conducted. The production of Astragalus adsurgens Pall.

Medicago sativa L.

Onobrychis visiaefolis Scop was analysed

in energy input through human labour and seed and energy output through grass

fuel and seed. The energy input to animals through raise and management and their output of energy through animal power

young animal

eggs and excrement of animals were calculated. Having studied energy output with energy input structure of the animals

a systematic analysis to energy flow for the sub-system of animal husbandry was made. It is suggested to develop the number of sheep and cattlas but limit and decrease the number of rabbit and chikens.

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Related Institution

He’nan Academy of Foretry Science,,He’nan

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