1) Eco-water information indices
生态水涵养模数
2) ecological conservation area
生态涵养发展区
1.
In Beijing ecological conservation area,the main work is about ecological barrier conservation and water conservation.
北京生态涵养发展区是以涵养北京生态屏障和水源保护为主,同时大力发展生态友好型产业的功能区域。
3) stocking water
涵养水分
4) water conservation
涵养水源
1.
A study on water conservation function of mixed forests of Schima superba plantation;
木荷人工混交林涵养水源的功能
2.
This paper analyzes the hydrologic informations of some rive r basins in forest cover in loess hill region of Gansu Province, showing the fo rest cover in the region contributes to increase precipitation, regulates obviou sly storm-flood and annual runoff, and improves efficiently microclimate, soil and water conservation.
同时 ,对改善区域小气候、保持水土、涵养水源效果显著。
3.
Water conservation functions of the four hydrology arrangements,including forest canopy layer,shrub-grass layer under canopy,litter in forest land and soil layer of the forest,in Dayao Mountain Nature Reserve in Guangxi were investigated.
对广西大瑶山自然保护区森林冠层、林下灌草层、林地枯枝落叶层及林地土壤层4个水文层次的涵养水源功能进行了效益计量调查研究,结果表明,该区森林植被总贮蓄水量为27508×104m3,年平均直接或间接的生态经济效益价值为3。
5) water resources conservation
水源涵养
1.
By using hiberarchy analysis and comprehensive index method, the ecosystem service importance and its regional diversities in Liaoning Province were quantitatively assessed, based on the comprehensive analysis of biodiversity protection, water resources conservation, soil conservation, desertification control, and nutrients conservation.
采用层次分析法和综合指标法对辽宁省生态系统服务重要性进行了定量评价,分析了辽宁省生态系统生物多样性保护、水源涵养、土壤保持、沙漠化控制和营养物质保持重要性及其空间分布特征,在此基础上进行了辽宁省生态系统服务重要性及其区域分异规律的综合评价。
2.
In this paper the functions of water resources conservation were studied on three kinds of artificially recovering plantations of soil and water conservation, grass planting, arbor mixed with shrub, mixed arbors(called patternⅠ,Ⅱand Ⅲ for short respectively) and control(not improving), in seriously eroded areas of subtropical granite red soil.
该文对严重侵蚀红壤 3种人工治理措施种草促林、乔灌混交、乔木混交 (分别简称为模式Ⅰ ,Ⅱ和Ⅲ )恢复的水土保持林及对照 (未治理 )的水源涵养功能进行了研究 。
6) Water resource conservation
水源涵养
1.
The water resources and the capacity of water resource conservation in upper reaches of Dahuofang reservoir were analyzed.
对大伙房水库上游流域水资源量和水源涵养能力进行分析,结果表明:多年平均水资源总量为14。
2.
The investigation on ecological environment,water resource conservation and economic status in 3 counties of Dahuofang reservoir upstream was carried out,the cost for protecting the reservoir water quality amounted to 820.
对大伙房水库上游3县生态环境、水源涵养、经济现状进行了调查分析,3个县为保护水库水质每年直接经济投入达82052万元。
补充资料:灌水模数
灌区单位面积的净灌溉用水流量。亦称灌水率,常以m3·s-1·(万亩)-1计。它是设计各级渠道流量和编制灌区用水计划的依据。灌水模数的计算,一般可先分别算出各种作物各次灌水的灌水模数,然后用图解法把各种作物灌水模数叠加成灌区的灌水模数(见图)。各种作物的灌水模数,可用下式计算:
式中qi为某种作物灌水模数〔m3·s-1·(万亩)-1〕;α为其种植面积占灌区灌溉面积的百分数;mi为其各次灌水定额(m3/亩);T为其各次灌水延续天数;t为每天灌水小时数。
初步绘制的灌水模数图(图a),一般很不均衡,并有短时间的间断,不便灌区运用管理,且浪费水量。在不影响作物需水的原则下,调整部分作物的灌水时间和延续天数,可得修正灌水模数图(图b)。选取其中延续时间较长的最大灌水模数值即为灌区设计灌水模数q。
根据灌区灌水模数图、灌区面积和灌溉水利用系数,可求得渠首设计引水流量和灌区用水流量过程。将各时段灌溉用水流量乘以灌水时间,即可得各时段的灌溉用水量。
式中qi为某种作物灌水模数〔m3·s-1·(万亩)-1〕;α为其种植面积占灌区灌溉面积的百分数;mi为其各次灌水定额(m3/亩);T为其各次灌水延续天数;t为每天灌水小时数。
初步绘制的灌水模数图(图a),一般很不均衡,并有短时间的间断,不便灌区运用管理,且浪费水量。在不影响作物需水的原则下,调整部分作物的灌水时间和延续天数,可得修正灌水模数图(图b)。选取其中延续时间较长的最大灌水模数值即为灌区设计灌水模数q。
根据灌区灌水模数图、灌区面积和灌溉水利用系数,可求得渠首设计引水流量和灌区用水流量过程。将各时段灌溉用水流量乘以灌水时间,即可得各时段的灌溉用水量。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条