您要查找的是不是:
- Suggestions on Starting the Construction of Ecological Forest Belt Around City 关于尽快启动环城生态林带建设的建议
- ecological forest belts 生态隔离林带
- Regulations of Jiangsu Province on Public Ecological Forest. 江苏省生态公益林条例。
- Seen from a distance, the forest belt has a very good shape. 从远处看去,这条林带有很好的林相。
- Intercropping of narrow crown poplar and agricultural crops will be popularized and networks of forest belts on farmland will be built. 在平原农区,大力推广窄冠型杨树与农作物间作,并营造农田林网;
- Sea, white sand, and the forest belt to build new kinds of pavilions, constitutes a colorful picture of a mirage. 海浪、白沙、林带以及林中新筑的各式亭台楼阁,构成了色彩斑斓的海市蜃楼图景。
- In 1998, the government reclassified the forest Shi made from commercial forest to ecological forest, making it difficult for... 政府可通过招标方式委托私人建设生态林,也可采购(征收、租赁)私人建设的生态林为社会提供生态安全服务。
- Ai Ai Xuefeng, Wu Hua Fanhuasijin the meadow, green spruce forest belt, silver water Piaodai, Chan Chan streams, springs Ding Dong. 皑皑雪峰,繁花似锦的五花草甸、苍翠的云杉林带、银色的水飘带,溪水潺潺,泉水叮咚。
- The ecological forest protection value calculated by the farmers’ WTA is more than the governmental payment, while less than the ecological benefit value. 相比之下,由农户意愿补偿值计算的生态公益林价值要远高于国家的实际补偿支付,但是又远小于生态公益林所带来的实际生态价值。
- Gebang River,20km in length, is located in the secondary forest belt of virgin forest,it has a reputation of "Jiuzhaigou of Guizhou". 蛤蚌河全长20余公里,为原始森林次生林带,有“贵州九寨沟”之誉。
- The result showed that vegetational varieties in ecological forest in Shanghai is relatively shortage, the plantation structure is too simple, and it is lack of the natural enemy. 调查表明:上海城市生态系统中的植物种类相对稀少,林分结构较为单一,缺乏病虫害天敌;
- Discussed to protect environmental problem and problem of protective forest belt (the treatment of deserted crosstie and processing problem) . 讨论了保护环境问题和保护林带问题(废弃枕木的加工和处理问题)。
- Landscape Ecological Effects of the Forest Belt Around Xi'an City 西安市环城绿化带的景观生态效应
- Based on the investigation and research, the Masson pine and Walnut are choosed as representatives of ecological forest and production forest. Then this paper forecasts their net income in different years and compares with the opportunity cost. 该文在对贵州省进行实地调研的基础上,以马尾松林和核桃林分别作为生态林和经济林的代表,对其不同年份的净收益进行了预期,在此基础上,通过与退耕还林机会成本的比较,得出马尾松和核桃种植农户的收益情况。
- Their order of net income is the early fruit orchard intercrop-ping>fruit tree-grain crop intercropping>agro-forestry intercropping>forest belts farmland>forest-animal husbandry combinational system. 而产投比为果园早期间作<林农间作<果农间作<林网农田<林牧结合;为平原农区合理建立农林复合生态系统提供了科学依据。
- The main factor of the dynamical change of the ecological forest in Minjiang Watershed was the mutual change among the broadleaf, Chinese fir, pinus massoniana and mixed forest, and there was relatively small change in other types. 闽江流域生态公益林动态变化的主导因素是阔叶树、杉木、马尾松与针阔混交林之间的相互转化,其它森林类型变化相对较小。
- Buffering forest belts betweens farmlands and ditches can effectively stop and purify such elements as N and P in soil runoffs, thus controlling non-point source pollution of agricultural lands. 农田与沟渠间的缓冲林带具有截留和净化土壤径流中的N、P等物质的作用,从而在一定程度上控制农业非点源污染。
- Firstly, Eucalyptus utilization including paper pulp timber, saw timber, process and utilization of Eucalyptus oil, landscaping of park and garden and ecological forest were briefly reviewed. 重点论述了当前桉树研究现状和成果(包括纸浆材、桉树珍贵树种及大径材培育、耐寒桉树、材性及加工、桉树与环境、桉树育种新技术及现代化育苗技术等);
- Raising beef cattle 1000, has also built the 3,000 acres of wetlands to pine, white flowers and Liquidambar Paulownia mainly of ecological forest and fast-growing industrial timber. 饲养肉牛1000头,同时还建立了3000亩的以湿地松、白花泡桐和枫香为主的生态林和速生工业用材林。
- The results are as follows:(1)The wheat at the north side of shelter?forest belt had a lower output. It is much lower than that on contrast district and also lower than that at the west side of forest?belt. 结果表明:(1)林带附近小麦产量明显低于对照区产量,林带对其北侧小麦产量影响的程度大于对西侧,且胁地范围比西侧的大;
