太行山低山片麻岩山地生态工程的水分效应  

The effects of ecological engineering on water conservation in the low gneiss moun- tainous area of Taihang

作　　者：李保国[1] 张金柱[1] 张丽娟[1] 栾景仁[1] 王金峰[1] 

机构地区：[1]河北林学院,保定071000

出　　处：《生态农业研究》1995年第3期41-46,共6页Chinese Journal of Eco-agriculture

基　　金："八五"国家重点攻关课题

摘　　要：李保国,张金柱,张丽娟,栾景仁,王金峰:太行山低山片麻岩山地生态工程的水分效应,《生态农业研究》,3(3)1995:41—46 通过太行山低山片麻岩山地土壤水分特性的研究,发现其蓄水保水能力较差,仅能拦蓄102.86毫米的降水量,有1/3—1/4时间土壤的含水量在萎蔫点以下,因而生长季节中有1/2—1/3时间需对该地上的林木进行灌水。通过生态工程措施,可增加蓄水量2.1倍,再进行地膜覆盖或者秸秆覆盖,控制水分的蒸发,调节土壤水分含量,使中、上层土壤水分含量显著增加。Studies on soil hydraulic characters showed that soil waterholding capacity is very low in the low gneiss mountainous region of Taihang. About one fourth of a year soil water content is below wilt point, and during the growing period of forestry nearly half to one third of the time water is in shortage and irrigation must be applied to the forestry. By application of the ecological engineering to this region,soil water holding capacity was increased by 2. 1 times. And plus plastic film cover and straw mulching for reducing soil evaporation the water content of upper layer of the soil was increased significantly.

关 键 词：太行山 片麻岩 生态工程 水分特性 调控措施 

分 类 号：S181[农业科学—农业基础科学]