[1]杨阳,高媛,郝嘉伟,等. 基于生态效益下城镇（郊）陡坡及人工立面不同坡度景观林评价——以干旱半干旱区为例[J].西北林学院学报,2019,34(1):242-246.[doi:10.3969/j.issn.1001-7461.2019.01.37]
　YANG Yang,GAO Yuan,HAO Jia-wei,et al. Ecological Benefit of Plantscape Forests in Different Degrees of Steep Slope and Artificial Facade in Arid and Semi-arid Areas[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2019,34(1):242-246.[doi:10.3969/j.issn.1001-7461.2019.01.37]
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 基于生态效益下城镇（郊）陡坡及人工立面不同坡度景观林评价——以干旱半干旱区为例()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第34卷
期数:
2019年第1期
页码:
242-246
栏目:
出版日期:
2019-01-31

文章信息/Info

Title:
 Ecological Benefit of Plantscape Forests in Different Degrees of Steep Slope and Artificial Facade in Arid and Semi-arid Areas
文章编号:
1001-7461(2019)01-0242-05
作者:
 杨阳1; 高媛1; 郝嘉伟1; 王睿1; 康海斌1; 赵国康2; 王得祥1*
 （1.西北农林科技大学 林学院，陕西 杨陵 712100；2.榆林市榆阳区林木种子站，陕西 榆林 719000）
Author(s):
 YANG Yang1; GAO Yuan1; HAO Jia-wei1; WANG Rui1; KANG Hai-bin1; ZHAO Guo-kang2; WANG De-xiang1*
 (1.College of Forestry,Northwest A&F University,Yangling 712100,Shaanxi,China; 2.Yuyang Forest Seed and Seedling Station,Yulin 719000,Shaanxi,China)
关键词:
 ; 干旱半干旱; 景观林; 叶面积指数; 固碳释氧; 吸热释水
Keywords:
 ; semi-arid and arid area;  plantscape tree;  LAI;  carban sequestration and oxygenrelease;  temperature drop and humidity increase
分类号:
S731.2
DOI:
10.3969/j.issn.1001-7461.2019.01.37
文献标志码:
A
摘要:
 通过对不同坡度景观林的叶面积指数及净光合速率和蒸腾速率等生理指标的测定，换算得到不同坡度景观林固碳释氧、吸热释水等生态效益指标。结果表明，若注重绿化覆盖度及三维绿量，则以叶面积指数为主导，在台地及0°~20°坡地选择侧柏（LAI∶0.648）为骨干树种；在20°~40°坡地选择山桃（LAI∶0.488）为骨干树种；在40°以上坡面，选择胶东卫矛（LAI∶0.743）和火棘（LAI∶0.589）为骨干树种。若注重生态效益，则以固碳释氧量为主导，在台地及0°~20°坡地选择侧柏（17.587、12.791 g·m-2·d-1）为骨干树种；在20°~40°坡地选择山桃（18.662、13.572 g·m-2·d-1）为骨干树种；在40°以上坡面，选择火棘（14.218、10.340 g·m-2·d-1）为骨干树种。若注重城市或城镇热岛效应，则以吸热释氧量为主导，在台地及0°~20°坡地选择酸枣（1 149.524 kJ·m-2·d-1，1 990.498 g·m-2·d-1）为骨干树种；在20°~40°坡地选择山桃（929.407 kJ·m-2·d-1，1 609.346 g·m-2·d-1）为骨干树种；在40°以上坡面，选择火棘（1481.387 kJ·m-2·d-1，2 565.145 g·m-2·d-1）为骨干树种。针对不同生态需求选择不同景观林是完成干旱半干旱城镇(郊)陡坡及人工立面景观林配置的关键。
Abstract:
 Nowadays,more and more scholars attach great importance to the study of steep slope/artificial fa?ade protection by plantscape forests occurring in township and suburbs,in which ecological benefit becomes a key issue in the evaluation of this kind of forests.In this study,some physiological indices of the trees planted in these slopes with different degrees were measured,such as leaf area index (LAI),net photosynthetic rate (Pn) and transpiration rate (Tr) were measured,which were then converted into the indices related to ecological benefits,including carbon fixation and oxygen release,endothermic and water releasing capacity.When focusing on vegetation coverage and living vegetation volume (LVV),the LAI index was the leading factor.The recommended tree species in different slope degrees were Platycladus orientalis (LAI∶0.648) for 0°-20° slope,Amygdalus davidiana (LAI∶0.488) for 20°-40° slope,Euonymus kiautschoicus (LAI∶0.743) and Pyracantha fortuneana (LAI∶0.589) for >40° slope.With the emphasis of ecological benefit,the carbon fixation and oxygen release were the primary factors.The recommended tree species were A.davidiana (with the carbon fixation capacity of 18.662 g·m-2·d-1 and oxygen release capacity of 13.572 g·m-2·d-1) for 20°-40° slope,E.kiautschoicus (14.218 g·m-2·d-1，10.340 g·m-2·d-1) for >40° slope.While concentrating on the urban heat island effect,dropping temperature and increasing humidity were the leading factors.The relative candidates of tree species were Ziziphus jujube (with endothermic capacity of 1 149.524 kJ·m-2·d-1 and increasing humidity capacity of 1990.498 g·m-2·d-1) for 0°-20 ° slope,A.davidiana （929.407 kJ·m-2·d-1，1 609.346 g·m-2·d-1）for 20°-40° slope,E.kiautschoicus (kJ·m-2·d-1，2 565.145 g·m-2·d-1) for > 40° slope.The results indicated that selecting tree species for the protection of deep slopes in township and suburb should be based on different ecological demands.

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备注/Memo

备注/Memo:
 收稿日期：2018-03-15修回日期：2018-07-19
基金项目：国家科技支撑计划项目“环境友好型城镇景观林构建技术研究与示范”（2015BAD07B06）。
作者简介：杨阳，男，在读硕士，研究方向：城市林业、城市森林生态。E-mail:yueyz007@126.com
*通信作者：王得祥，男，教授，博士生导师，研究方向：城市林业、森林生态与森林可持续经营。E-mail：Wangdx66@126.com
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