In compliance with the objective route of historical development, and based on time and its contents, forest tourism culture in Zhejiang are divided into four periods: formation period, development period, prosperity period, and approaching modern times period; based on its representation of characteristics, it can be divided into origin and transition period, classifying and humanizing landscape and fusing forest period, enjoying and appreciating landscape and the climax of forest period, sight-seeing, exploring landscape and the science of forest period.

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The study is carried out that the comparison of fine root production, decomposition and distribution along with Korean pine and broad-leaved climax forest succession; the fine root contribution to the belowground C and N storage along with Korean pine and broad-leaved climax forest succession; and the comparison of belowground C and N storage among the Korean pine and broad-leaved climax forest, three dark-conifer forests, a betula ermanii forest along altitude.

研究?jī)?nèi)容包括：原始闊葉紅松林及其不同演替階段的次生林中細(xì)根的生長(zhǎng)和周轉(zhuǎn)一及黄色、分解與分布的特征www黄色一片在线观看，闡明在不同演替階段細(xì)根的變化；原始闊葉紅松林及其不同演替階段的次生林中細(xì)根對(duì)根系毛茸茸屄、土壤和林地地下的碳α级片网站、氮貯量的影響，分析在不同演替階段細(xì)根周轉(zhuǎn)對(duì)地下碳久久91这里精品国产调教、氮貯量的貢獻(xiàn)黄H片免费在线观看；以及對(duì)不同垂直海拔高度分布的不同類型的原始森林中細(xì)根和根系生物量的變化，及細(xì)根對(duì)根系欧美黑人又粗又大巨长压v双、土壤和林地地下碳高清欧美亚洲国产下载网站、氮貯量的貢獻(xiàn)進(jìn)行了研究。

7Gm〓 in the 20 yr forest, 1139. 8gm〓 in the 80 yr forest and 912. 4 gm〓 in the climax forest, respectively. However, along with forest succession, the dominant tree species fine root annual production increases, whereas other arboreal and grass fine root annual production decreases.

白樺山楊幼林精品露脸国产偷人在视频0、白樺山楊成熟林與原始闊葉紅松林中网站黄色一区，細(xì)根年生長(zhǎng)量分別為712.7gm〓无码窝导航凹凸导航、1139.8gm〓和912.4gm〓色综合免费视频在线观看；但是，隨著演替的進(jìn)行www.ht5668.com，林地主要樹種細(xì)根的年生產(chǎn)量會(huì)逐漸增加国内精品久久久久电影al换脸，其它木本和草本細(xì)根的年生產(chǎn)量則逐漸降低。

In the 20 yr forest, 304. 6gm〓 C and 11. 6gm〓 N are inputted to the soil. In the 80 yr forest, 502. 3gm〓 C and 17. 2gm〓 N are inputted to the soil. In the climax forest, 430.3gm〓 C and 11. 9gm〓 N are inputted to the soil. Along with forest succession, the C inputted to the soil B layer by fine root increases because of the deepening of root depth distribution.

白樺山楊幼林日韩操逼特色特黄一级免费视频、白樺山楊成熟林與原始闊葉紅松林中美国的黄色视频，細(xì)根每年向林地周轉(zhuǎn)的碳量分別為304.6gm〓、502.3gm〓在线看片av免费观看黄色电影、430.3gm〓日韩特黄一级美女性爱视频，氮量分別為11.6gm〓、17.2gm〓亚洲视频精品在线观看、11.9gm〓欧美第一页第二页；其中，隨著演替的進(jìn)行日韩人人操人人摸，由于根系分布的加深免费观看自拍第69页，細(xì)根每年向土壤B層周轉(zhuǎn)的碳量會(huì)逐漸增加。

Along with the Korean pine and broad-leaved climax forest succession (a 20 yr Populus davidiana and Betula platyphylla secondary forest, an 80 yr Populus davidiana and Betula platyphylla secondary forest and the Korean pine and broad-leaved climax forest), the peak production of fine root is in early summer and autumn.

在原始闊葉紅松林的演替過(guò)程中（白樺山楊幼林—白樺山楊成熟林—闊葉紅松林）国产又黄又免费AAAA视频，細(xì)根生長(zhǎng)的季節(jié)變化特征是生長(zhǎng)頂峰出現(xiàn)在初夏和秋季女潮喷视频。

Shanlinsi Forest Recreational Park is located more than 2000 meters above sea level. Looking over the forest, it is full of towering cedars and cypresses with a natural and primitive breath of air. In this vast forest area, there is a well-known pristine eco-forest and dead cryptomeria trees standing tall in the swamp. Such desolate beauty makes people feel really lonely.

海拔超過(guò)二千公尺的杉林溪，放眼過(guò)去盡是高聳的杉樹农村一级一级毛片无码、檜木林欧美性爱18，有著自然而原始的氣息精品一区精品二区精品久久，而在這片面積廣大的森林中，有一片鮮為人知的原始生態(tài)林XNXX黄色小视频、一片因?yàn)榫哦蛔枞拥佬纬傻恼訚傻匮侵抟患镀谙撸豢每盟劳龅牧脊P直的朝向藍(lán)天，有種孤寂人人舔人人爱人人操、蒼涼的美感麻豆视频免费看。

In the same depth, the content of total nitrogen of broad-leaved deciduous forest in 0~10 cm depth is maximum ,and the average total nitrogen of the bamboo forest is maximum in 10~20 cm and 20~30 cm. The available phosphorus content of broad-leaved deciduous forest is minimum, and the available phosphorus content of coniferous forest is minimum, the deviancy is very big, which is mainly related to the human being's activities and the way of soil usage.

同一土層深度，落葉闊葉林在0~10cm土層全氮含量最高全色黄大色大片免费久久老太，而毛竹林在10~20cm和20~30cm土層全氮含量都超過(guò)落葉闊葉林一级黄色电影在线看，使得毛竹林在土壤平均全氮含量為最高；各種森林類型中以闊葉林尤其是落葉闊葉林的速效磷含量最高草久久，而針葉林的速效磷含量最低a小视频在线网址，空間變動(dòng)性很大，這主要和人類活動(dòng)及土壤的利用方式有關(guān)日韩人人操人人操。

Forest felling right is the right that the main body of right enjoys and fells the forest in a legal manner to make profits according to the legally obtained forest felling license,excluding the interference of others,and it is also a manifestation of the disposure functions of forest property.

林木采伐權(quán)是權(quán)利主體根據(jù)依法取得的采伐許可的規(guī)定而享有的按照法定方式對(duì)林木進(jìn)行采伐獲得收益并排除他人干涉的權(quán)利www.色色网，是林權(quán)處分權(quán)能的一個(gè)表現(xiàn)。

Now, there is a need for our country forest to be reformed by the reason of Chinese forest current estate, in order to improve the forestry efficiency to satisfy the need of people on the forest product and the ecology service and contribute to forest double-quick development.

現(xiàn)階段91精彩在线，我國(guó)的林情決定了我國(guó)林業(yè)必須進(jìn)行一定的變革欧美十八禁一级在线，提高林業(yè)的效率，才能滿足人們對(duì)林產(chǎn)品和生態(tài)服務(wù)的需求高清无码DVD，才能實(shí)現(xiàn)林業(yè)的跨越式發(fā)展欧美性爱日韩。

When making plans for biodiversity conservation for a forest management unit such as forestry bureau or forest farm, we should firstly make conservation priority for different forest types according to the resistance and adaptability of forest to disturbances.

在一個(gè)森林經(jīng)營(yíng)單位進(jìn)行生物多樣性的保護(hù)時(shí)，首先應(yīng)根據(jù)不同森林類型對(duì)干擾的適應(yīng)和抵抗力大小確定對(duì)各類森林優(yōu)先保護(hù)的次序欧洲免费A片在线观看，然后再在各類森林的不同小班中進(jìn)行生物多樣性間接評(píng)價(jià)打分表的填寫99久久精品国产免费男女，最后根據(jù)不同小班生物多樣性得分的多少確定其保護(hù)的等級(jí)或先后次序。