查询词典 cropland

After return the cropland, Tao Yuanming didn't want to become an anchoret, but want to inaugurate a new mode of life, which is different from Confucian, Buddhism, and Taoism.

归田"之后的陶渊明并非有意要作隐士，而是试图在儒释道之外，开创出一种以"美和诗意为人生追求的艺术化的生存范式。

This article detailedly expatiated upon the principles, contents and methods of cropland classification; it analyzed the necessity to combine the work of cropland classification with GIS technology, summarized the attributions of ARC/INFOand some other related softwares; it established the technologic route of cropland classification supported by GIS, by a case study in Liwu Town,Li County Hebei Province, this article expatiated the practicable mechanism of combining the function of ARC/INFO with the work of cropland classification, and put forward some new ideas and approaches of utilizing GIS: this paper put forward the idea of coding the polygons in the basic graphic database such as soil map and land use map according to their attributes, and put forward the detailed coding project; based on the code databases, it expatiated upon the detailed approaches to create single梖actor map and output the final classification map; it put forward the principles and the method of creating classification units in the environment of GIS, that is how to keep the lines of soil polygon, the border of districts and the important objects such as residential areas, banks of rivers and roads ,and how to overlap single梖actor soil map and land use map, and to delete some vector lines of the overlapped map appropriately; it detailed the methods of creating mathematic model of classification coefficients in the environment of computer, and used FOXPRO6.0 programs to realize the automation of calculating coefficients; it represented the method of plotting the final map by overlapping various coverages according to the code tables and lookup tables, the process of outputting the cropland classifying map was finished by program.

本文法对耕地等别划分的原则、内容及方法作了较详细的阐述，介绍了多系数综合修正法的耕地等别计算方法及其具体应用和AHP的确权方法；分析了耕地等别划分工作与地理信息系统技术相结合的必要性，简要介绍了地理信息系统软件ARC／INFO及其他相关软件的功能特点，制定了地理信息系统支持下耕地等别划分的技术路线，通过对河北省蠡县蠡吾镇的实证研究，重点阐述了ARC／INFO及相关数据库软件与耕地等别划分结合的有效机制及GIS应用的一些新思想、新方法：提山了对土壤图和土地利用现状图等基础图形数据库进行特征编码的思想和具体的编码方案，阐述了基于与图形库相链接的特征编码表，单因素图提取、成果图的输出的具体实现方法；提出了GIS环境下耕地单元划分的原则和方法，即在保留土壤因素图斑界线、行政界线和重要地物等的原则下，将土壤单因素图和土地利用现状图进行拓扑叠加，对叠加图中的矢量线进行适当的删除；阐述了在计算机环境下，耕地分等参数计算模型建立的方法，并用FOXPRO6.0语言程序实现了参数计算的自动化；阐述了根据图形库特征编码表和建立绘图符号查找表，按不同图层叠加绘制成果图的方法，该过程用命令程序实现耕地等别图的输出。

Engineering multi-targets and outer-benefits of conversion cropland into forest, modulation flaccidity of forest asset collocated market were analyzed in a new point, after conversion cropland into forest. Relations and focuses of different main bodies were cleared, and a result indicated that benefit maintenances and inner drive collocations of main bodies were the key of follow-up policies.

从新的视角分析了退耕还林工程运营目标的多元性、效益的外部性、退耕还林工程后林木资产配置市场机制调节的软弱性，理清了退耕还林工程不同主体之间的关系及关注的侧重点，得出了培育后续产业维护经营主体利益、调动经营主体的内在动力是后续政策关键的结论。

Pondweed of paddy cropland use prevent and kill off, at day of the 15-20 after paddy transplant, direct seeding cropland is in tillering later period, pondweed happening is filled period, blade is major by red turn green when, every mus are used 25% but gram of 100-200 of wet sex powder, mix fine wet earth 20 kilograms or so, scatter equably apply.

水稻田使用防除眼子菜。于水稻移栽后15-20天，直播田在分蘖后期，眼子菜发生盛期，叶片大部分由红转绿时，每亩用25%可湿性粉剂100-200克，混细潮土20公斤左右，均匀撒施。

But, because publicize education to did not catch up with, many farmers are mixed to the concept of land ownership and access the relation is punch-drunk, mistake contracts for land even if cent cropland works alone,"Responsibility cropland deal out I put in me 's charge all " wrong idea exists generally, accordingly, the farmer does not wish to fulfil the obligation that he should use up to collective.

但是，由于宣传教育没跟上，不少农民对土地所有权和使用权的概念和关系模糊不清，误认为土地承包就是分田单干，"责任田分给了我就归我所有"的错误观念普遍存在，因此，农民不愿向集体履行自己应尽的义务。

The result showed that the content of soil carbon indices on slope cropland were lower and increased dramatically in linear pattern after the cropland were abandoned for some time. 50 years after abandonment, OC, AOC and NAOC would increase by 169%, 144% and 210% respectively, compared to the slope cropland and would be 35 %, 39 % and 33 % respectively, of t he natural Chinese arborvitae stand. The carbon pool index and carbon pool management index would sharply increased by 169% and 117%, comapared to the slope cropland would increase by 35% and 42% respectively, compared to natural Chinese arborvitae stand.

结果表明：侵蚀环境的坡耕地土壤碳库各组分含量较低，土壤碳库处于高速低效率运转；撂荒后可以显著增加土壤碳库各组分含量，并随恢复年限呈显著线性关系，50 a时，TOC、LOC和NLOC分别较坡耕地增加169%、144%和201%，为侧柏林的35%、39%和33%；碳库指数和碳库管理指数较坡耕地明显增加，增幅分别达到169%和117%，仅为侧柏林的35%和42%。

Over a 20-year period there was no increase in soil water content in the grazed grassland at depths of 2～9.9 m. There was a small increase(0.5～3.7 mm/a) in soil water content in the protected grassland, however the slow rate of increase suggests that at least 150 years would be needed for ungrazed grassland soils to regain water content similar to that present prior to planting trees. Recharge of deep soil moisture was faster in cropland(15 mm/a), but at this rate it would still take about 40 years to restore cropland soil water content to pre-plantation conditions.

结果表明，人工林死后的放牧荒坡在20a的时间里，其土壤水分没有补偿；人工林死后的保护草地土壤水分有微弱恢复迹象，但年恢复速度在0.5～3.7 mm之间，以这样的速度恢复到持续放牧荒坡的土壤含水量，至少需要150a以上；林后农地土壤含水量有恢复趋势，年平均恢复速度为15 mm左右，其土壤含水量要恢复到持续农地当前的水平，大约需要40a的时间。

The study indicates that the content of soil carbon is on the low side because human behavior has a negative effect on sloping cropland. However, the content of every group soil carbon increased drastically by planting Robinia . With the increasing of the time of conservation, the relationship is very remarkable. After 50 years of restoration, the content of TOC, LOC, NLOC and AI in the study plot increased by 271%,174%, 467%, and 271%, respectively, compared with sloping cropland. The increasing speed of NLOC was faster than LOC. It is assumed that the increased carbon by restoration is stored in an inactive form to produce active matter which is necessary for biont. And the soil carbon must keep active to fulfill the balance of carbon dynamic transformation. At initial stages, soil carbon management index increased remarkably.

营造刺槐林可以显著增加土壤碳库各组分含量，并随恢复年限呈显著线性关系，50a时TOC、LOC、NLOC和碳库指数分别较坡耕地增加271%、174%、467%和271%，其中NLOC增加速率略高于LOC，表明植被恢复增加的土壤碳素绝大多数以非活性形态贮存起来，而为了满足生物生长所必须的活性物质来源，土壤碳库必须维持一定的活度状态来满足碳素的动态转化平衡，碳库管理指数在营造刺槐林初期显著降低，随后先增加后降低，与刺槐林生长特性密切相关；但与天然林相比差距仍然较大，恢复50a时TOC、LOC和NLOC仅为侧柏林的49%、34%和61%。

Water area and cropland were the main land cover types that reed converted. Lower places in north and east parts of Baiyang Lake were the ones occurred the conversion between reed land and water area, and higher places in northwest and southwest occurred the conversion between reed land and cropland.

研究结果表明，16年间，就整个白洋淀而言，苇地变化经历了&落－起－落&的过程，水域与耕地是苇地变化的两个主要方向，苇地与水域的转变主要发生在地势较低的北部与东部地区，苇地与耕地的转变主要发生在西北与西南的地势较高地区。

The results are as follows: 1 great changes have taken place in land use and landscape pattern from 1995 to 2000; the area of woodland, water and unused land has been reduced and that of grassland, cropland and construction land increased; 2 the advance of fractal dimensions, the diversity index and landscape fragmentation degree showed that landscape units became strongly fragmented; 3 the dominant degree of construction and unused land has changed little but that of meadow and water increased, and that of farmland and woodland decreased to some extent, which indicated that the trend of landscape pattern changed from cropland and woodland to meadow and water; 4 the changes of land use and landscape patterns near the road are obvious and it is urgent to strengthen eco_environment protection.

主要结果如下：①1995-2000年间，研究区土地利用变化显著，其中林地、水域和未利用土地面积下降，而草地、耕地和建设用地面积增加；②景观破碎化程度加剧，分维数、多样性指数和景观破碎度均增加；③建设用地和未利用土地优势度变化不大，耕地和林地的优势度减小，草地和水域优势度增加，表明研究区景观格局由耕地、林地向草地和水域转变；④交通干线附近的土地利用和景观格局变化显著，加强这些区域的生态环境保护与建设势在必行。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失