Agroforestry and its Application in Amelioration of Saline Soils in Eastern China Coastal Region

查看全文 作　　者：[1]ZhangJianfeng;[1]XingShangjun;[2]LiJiyue;[3]F.Makeschin;[1]SongYumin 机构地区：[1]ShandongAcademyofForestry,Jinan250014,ER.China;[2]ColleageofResourcesandEnvironment,BeijingForestryUniversity,Beijing100083,P.R.China;[3]InstituteofSoilScience,DresdenUniversityofTechnology,D-01735Tharandt,Germany 出　　处：《Forestry Studies in China》索引2004年第6卷第2期,共7页 基　　金：This research is a part of the German-Chinese Project of Agroforestry in Coastal Region supported by the BMBF 摘　　要：Some environmental problems, especially soil salinity hinder the regional sustainable development of eastern China coastal region. Salinity mainly comes from tide weave, seawater flooding and seawater intrusion. Over exploitation of groundwater, which is the result of unfitful land use systems, leads to seawater intrusion and salt concentration increase. Agroforestry systems can enrich soil fertility and prevent soil salinization, furthermore help maintain biodiversity and enhance productivity. For the intergrated multiple ecosystems the most critical issue is to select optimum tree species and rationally arrange these plants. The basics of this multiple ecosystem is that different plants will occupy variable ecological niches within an area, both in space and in soil depth. Shelterbelts and trees intercropping with agricultural crops are major types of the multiple ecosystem. Shelterbelts can reduce wind speed and consequently lessen evaporation and erosion of the soil, increase pasture growth by up to 60% on exposed sites, increase crop yields by up to 25%. Besides intercropping with jujube, other agroforestry multiple ecosystem such as forestry plus agriculture, forestry plus agriculture plus fishery, and forestry plus animal husbandry are the most appropriate ways to utilise land resource in this region. 关 键 词：土地改良 盐碱地 沿海地区 中国 森林土壤学