短草區域 的英文怎麼說
中文拼音 [duǎncǎoqūyù]
短草區域
英文
closly-mown area-
This study run through the basic idea of ecoregional approach methodology and systematic design by integrating agronomy, ecology, environmental economics, resource economics and maths. the study methods included macro - and micro - analysis, qualitative and quantitative analysis, theoretical and case study, statistical analysis and model simulation and so on. resources shortage and environmental pollution casued by intensive agriculture were examined for a specific suburban area shunyi district beijingissues were systematically analyzed including landuse changes, landuse driving force, water - limited yield simulation with wofost model, ecological, environmental and economical analysis of landuse, as well as optimizing pattern of landuse with rcsadss model
本研究立足於生態區域法的基本思路，採用系統設計的思想，通過農學、生態學、環境經濟學、資源經濟學、數學等多學科的交叉與融合，宏觀與微觀、定性與定量、理論與實證研究等相結合的方法，運用統計分析、模型模擬等技術手段，在大量調研基礎上，針對目前大城市郊區農業用地中存在資源短缺、環境污染等問題，以北京市順義區為典例，從土地利用現狀與動態、驅動力、 wofost模型產量模擬、生態環境經濟分析及種植業結構優化模式等方面進行了系統研究，獲得如下研究結果： （ 1 ） 2002年順義區的土地利用仍以農業用地為主，耕地、園地、林地和牧草地之和占總土地面積的56 ，農用地中糧食作物仍佔43 。Closely - mown area
短草區域In order to maintain the sustainable use of land and water resource, to protect the land from desertification and to make longyangxia reservoir safe, firstly, the spatially disturbed model has been established in which includes dem - based precipitation and runoff, regional transpiration and regional water balance modules in gonghe. secondly, the model of grassland climate potential productivity and the model of grassland productivity modified by plant water demand and stocking intensity factors has been constructed in gonghe. according to the carrying capacity and the actual amount of animals on the grassland, coupled with actual grassland investigation, and by using social - economic data, the grassland productivity, species composition, biotope and the cause of desertification has been analyzed
為了做到對本區的水土資源的可持續利用、防治本區的荒漠化和保護龍羊峽水庫，所以基於dem和已有的氣象、水文長短期觀測和實測數據，首先構建了青海共和盆地降雨、徑流、蒸散和區域水分平衡的分散式模型；進一步在此基礎上，構建了青海共和盆地草地生產力的模型和基於作物水分耗散與放牧因子校正的青海共和盆地草地生產力模型；利用草地載畜能力和現有牲畜量以及社會經濟因子等統計數據，結合實地調查，分析了青海共和盆地草地生產力、物種構成、生境變化和荒漠化成因及其內在驅動因子，並對草地可持續利用做了評價。Because of regional underground water level continual dropping and climate changing to aridity, land desertifacation and degeneration of glassland and tundra will tend to worse in short period
由於區域地下水位的持續下降和氣候向乾旱化發展，土地沙化、草場退化及多年凍土退化短期內將趨于惡化。分享友人