以辽河三角洲盐碱地营造的11种树种配置模式为对象,分析了不同树种配置模式对土壤温度、土壤含水量、土壤盐分质量分数的改良效果.研究表明:白榆刺槐混交林、白蜡沙枣混交林、白蜡刺槐混交林、白蜡小胡杨混交林、小胡杨刺槐混交林对土壤温度、土壤含水量和土壤盐分质量分数的改变最大,土壤温度降低12％ ～16％,土壤含水量的改变辐度在26.1％ ～27.5％,土壤盐分质量分数降低60％ ～ 87％；小胡杨纯林、刺槐纯林、109柳纯林、群众杨纯林、白榆纯林、白蜡纯林对土壤温度、土壤含水量、土壤盐分质量分数的改变效果要比混交林差,土壤温度降低5％ ～12％,土壤含水量的改变辐度在4.1％ ～9.8％,土壤盐分质量分数降低20％ ～60％.%An experiment was conducted to study the effect of different allocation modes of eleven tree species on soil temperature , water content and gait content in Liaohe River Delta. Results showed that Ulmus pumila-Robima pseudoacacia, Frax-inus chinensis-Elaeagnus aiigustifolia, F. chinensis-R. pseudoacacia, F. chinensis-Popuhu simonii × P. euphratica, Popu-lus simonii ×P. euphratica-R. pseudoacacia mixed forests bad significant influences on soil temperature, water content and salt content, in which soil temperature decreased by 12% -16% , water content changed by 26. 1% -27. 5% , and salt content reduced by 60%-87%. However, P. simonii ×P. euphratica, R. pseudoacacia, Salix ×' 109', Populm popu-laris, U. pumila, F. chinensis pure forests had slight influences on soil temperature, water content and salt content, in which soil temperature decreased by 5% -12% , water content changed by 4.1% -9. 8% , and salt content reduced by 20% -60%.
展开▼
