ZHAO Pei-xian.Research on the Benefits of Land and Tree Planting Modes of Ecological Economy in Dry Hot Valley Region of Jinsha River[J].Research of Soil and Water Conservation,2014,21(04):229-232,237.
金沙江干热河谷区退耕地生态经济林种植模式效益研究
- Title:
- Research on the Benefits of Land and Tree Planting Modes of Ecological Economy in Dry Hot Valley Region of Jinsha River
- Keywords:
- dry-hot valley along Jingsha river; trees bearing economic and ecological values; benefits of intercropping patterns
- 分类号:
- Q948.15;S181
- 摘要:
- 为提高金沙江干热河谷退耕还林后经济生态效益，在相同立地条件下构建3种生态经济林种植模式，小枣+葡萄混交模式、台湾青枣+芒果混交模式、小枣单作模式，对经济生态效益进行比较分析。结果表明：3种种植模式都有较高的经济收益，其中：小枣＋葡萄混交模式在单位面积中获得产值、纯收入和经济产投比、以及土地生产率都高于其它两种模式。各模式对局部小气候都有一定的调节作用，其中，台湾青枣+芒果模式林内温度比林外下降幅度最大为11.8℃，分别是两种模式的1.62倍和1.21倍，而小枣+葡萄模式在林内5 cm的地表温度下降幅度最为明显；从土壤改良效应来看，小枣+葡萄模式明显优于其它两种模式。综合对比结果表明：小枣+葡萄模式 > 台湾青枣+芒果模式 > 小枣单作模式。
- Abstract:
- In this paper, the purposes of returning farmland to forest construction of ecoeconomy and trees, jujube+grapemixed mode, Taiwan jujube+mango mixed mode and jujube monoculture in dry hot valleys of the Jinsha River under the conditions of the same site are to control soil erosion through land conversion effectively, improve the ecological environment, change the structure of soil, increase soil fertility, increase farmers income, solve the problem of farmers life. Three typical afforestation modes (i.e., pure jujube grove mode, jujube mixed with grape grove mode, muaritiana mixed with mango grove mode) were established by planting four economic and ecological tree species. The results showed that all the three cropping patterns had the high economic benefits, among which jujube mixed with grape grove mode was the best mode with respect to not only its output per unit area, net income, economic output ratio, as well as land productivity. The output value and net income obtained from jujube mixed with grape grove mode were 2.6 and 2.7 times as same as the other two modes; and its economic output ratio, land productivity are 1.2 and 2.6-fold than the other modes. The mode sequence according to their economic contribution was as following: jujube mixed with grape grove mode, mauritiana mixed with mango grove mode, pure jujube grove. Biomass of this mode and its related indicators were higher than the other two ones, though each mode played some regulatory role in the local microclimate. In the muaritiana mixed with mango grove mode, grove inside temperature was lower 11.8 than outside one, which was 1.62 times and 1.21 times, respectively, as same as the other ones. However, the decline of grove 5 cm surface temperature was most obvious under jujube mixed with grape grove, which was also the best mode in view of the effects of soil improvement. The suggestion regarding the economic combined with ecological benefits was put forward as the suitable mixed cropping pattern was jujube mixed with grape grove mode or muaritiana mixed with mango grove mode.
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备注/Memo
收稿日期:2013-09-17;改回日期:2013-11-13。
基金项目:国家科技部“十一五”科技支撑专题干热河谷过渡区植被恢复技术（2006BAD0304）
作者简介:赵培仙(1964-),男,云南元谋人,高级工程师,主要从事营林绿化,林木培育,森林病虫防治检疫及林业工程项目管理。E-mail:ymzpx@163.com