Based on the factors of species abundance,relative endemism and hierarchy of the plant species,the species diversities of spermatophytic genera endemic to China in these forest areas were evaluated,respectively,and the critical forest areas were identified.
分析得出关键保护林区为白龙江下游(白水江)林区、白龙江中上游林区和小陇山林区;最低保护区域组合按其优先序依次为白龙江下游(白水江)林区、白龙江中上游林区、东祁连山林区、小陇山林区和太子山-大夏河林区。
Therefore, they a ttached great importance to forest protection and forestation.
中国古代已经认识到林木对国计民生及保护环境的重要作用 ,因此十分重视护林和造林。
Theories and technologies of ecologically regulating poplar longhorned beetle disaster in shelter forest.;
防护林杨树天牛灾害的生态调控理论与技术
Study on Structure and Growth of Shelter Forest in Maowusu Sand;
毛乌素沙地防护林结构与生长的研究
The scope,geographic location,climatic features of Loess Plateau and its shelter forest are introdued here.
简述了我国黄土高原的范围、地理位置、自然气候特征及防护林建设成就。
Evaluation of landscape ecology of shelterbelt system of Beizang Town, Daxing County, Beijing;
京郊北藏乡防护林景观生态评价
The Positioning Study on the Microclimate Effects of Casuarina equisetifolia Coastal Shelterbelts;
木麻黄沿海防护林小气候效应的定位研究初报
Technology of Establishing Shelterbelts for Dikes and Dams in Heilongjiang Reclamation Area;
黑龙江垦区江河堤坝防护林营造技术
The cover strata have been redivided and the new Shanghulin Formation was definde according to the information of the key holes and comprehensive surface geologic mapping Shanghulin basin is a volcanic-collapse basin and its cover sequences are well correlated with those in adjacent Mesozoic basins in Russia and Mongolia.
在上护林盆地立体地质填图过程中，施工了本区中生代盖层的首批基准孔，在全面综合地表地质填图与基准孔资料的基础上，对盖层进行了重新划分，新建了上护林组。
The Protection Forestry(Phase 4)for the Landfill of the Old Port Areas in Shanghai;
上海老港城市固体废弃物填埋场四期景观绿化防护林建设工程
Advance of spatial allocation for protection forest;
防护林空间配置研究进展
Studies on Soil Amelioration of the Protection Forests In the Hilly Areas of central Sichuan;
川中丘陵区防护林改良土壤作用研究